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Graphene patents

      

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 Devices and methods of fabrication of sinusoidal patterned silicon dioxide substrates patent thumbnailDevices and methods of fabrication of sinusoidal patterned silicon dioxide substrates
A method for fabricating nanoscale patterned oxide substrates and devices incorporating the substrates are provided. Highly periodic or non-periodic sinusoidal patterns and other fine oxide patterns are formed on the surface of a suitable base such as silicon.
The Regents Of The University Of California


 Positive electrode for nonaqueous secondary battery,  forming the same, nonaqueous secondary battery, and electrical device patent thumbnailPositive electrode for nonaqueous secondary battery, forming the same, nonaqueous secondary battery, and electrical device
A positive electrode for a nonaqueous secondary battery including an active material layer which has sufficient electron conductivity with a low ratio of a conductive additive is provided. A positive electrode for a nonaqueous secondary battery including an active material layer which is highly filled with an active material, id est, including the active material and a low ratio of a conductive additive.
Semiconductor Energy Laboratory Co., Ltd.


 A multilayer graphene composite patent thumbnailA multilayer graphene composite
A multilayer graphene composite comprising a plurality of stacked graphene layers separated from one another by an ion gel, wherein the ion gel is intercalated between adjacent graphene layers such that ions within the ion gel are able to arrange themselves at the surfaces of the graphene layers to cause a detectable change in one or more of an electrical and optical property of the graphene layers when a gate voltage is applied to a gate electrode in proximity to the ion gel.. .
Nokia Technologies Oy


 Applications of graphene grids in vacuum electronics patent thumbnailApplications of graphene grids in vacuum electronics
graphene grids are configured for applications in vacuum electronic devices. A multilayer graphene grid is configured as a filter for electrons in a specific energy range, in a field emission device or other vacuum electronic device.
Elwha Llc


 Two-dimensional graphene cold cathode, anode, and grid patent thumbnailTwo-dimensional graphene cold cathode, anode, and grid
In an embodiment, a method includes forming a first diamond layer on a substrate and inducing a layer of graphene from the first diamond layer by heating the substrate and the first diamond layer. The method includes forming a second diamond layer on top of the layer of graphene and applying a mask to the second diamond layer.
Lockheed Martin Corporation


 Graphene-based micro-scale identification system patent thumbnailGraphene-based micro-scale identification system
A system for labeling an object uses at least one object label made from a material that absorbs and reflects incident energy uniformly across all wavelengths of incident energy at a ratio proportional to a thickness of the material and that includes a pattern having variations in the thickness of the material along at least one of two orthogonal directions across the label. An interrogator directs a predetermined wavelength of radiation to the at least one label, and a reader to receives reflected radiation from the label at the predetermined wavelength and interprets the reflected radiation to recognize the pattern..
International Business Machines Corporation


 Method and  analysis of ionsized gases patent thumbnailMethod and analysis of ionsized gases
Apparatus comprising an inlet region for receiving a gas mixture; an ionizer for supplying hydronium ions to the received gas mixture to generate ions, wherein the ionizer comprises a membrane for receiving the gas mixture, and wherein the membrane, preferably made of graphene oxide, is capable of generating hydronium ions from water; and an ion detector for detecting ions generated from the gas mixture.. .
Nokia Technologies Oy


 Graphene-based touch sensor device using triboelectricity and  fabricating the device patent thumbnailGraphene-based touch sensor device using triboelectricity and fabricating the device
The present disclosure provides a graphene-based touch sensor device using triboelectric effect, the device comprising: a substrate; a first electrode layer disposed on the substrate; a graphene channel layer disposed on the substrate, wherein the graphene channel layer is flush with the first electrode layer, and is spaced from the first electrode layer; a gate dielectric layer in partial contact with the electrode layer and the graphene channel layer respectively; source and drain electrodes formed on both opposing ends of the graphene channel layer respectively; and a triboelectric layer formed on the first electrode layer, wherein the triboelectric layer generates a triboelectric potential via contact of an external friction material therewith, wherein the contact of the external friction material is detected based on a current change in the graphene channel layer due to the triboelectric potential applied thereto.. .
Research & Business Foundation Sungkyunkwan University


 Stable ir transparent conductive graphene hybrid materials and methods of making patent thumbnailStable ir transparent conductive graphene hybrid materials and methods of making
A method of making a transparent conductive graphene hybrid, comprising the steps of providing a pmma/graphene hybrid, functionalizing the pmma/graphene hybrid, providing a transparent substrate, oxidizing the transparent substrate, treating the oxidized substrate and forming a functionalized substrate, applying the pmma/graphene hybrid to the functionalized substrate, removing the pmma, and forming a transparent conductive graphene hybrid. A transparent conductive graphene hybrid comprising a transparent substrate, wherein the transparent substrate is oxidized, and wherein the transparent substrate is treated with tfpa-nh2 to form a functionalized substrate, and a layer of graphene on the functionalized substrate..
The Government Of The United States Of America, As Represented By The Secretary Of The Navy


 Cell sheet manufacturing device and manufacturing method therefor patent thumbnailCell sheet manufacturing device and manufacturing method therefor
The present invention relates to a cell sheet manufacturing device and a manufacturing method therefor. More specifically, the present invention relates to a cell sheet manufacturing device comprising a support layer made of silicon rubber, a patterned electrode formed adjacent to the support layer and a graphene layer formed adjacent to the electrode, and a manufacturing method therefor..
Institute For Basic Science


Method for reducing thiophene in diesel fuel

The present disclosure provides a method, for removing sulfur compounds from a fuel containing sulfur compounds. The method includes contacting the fuel with an adsorbent that comprises a carbonaceous material doped with nanoparticles of aluminum oxide to reduce the concentrations of the sulfur compounds, the carbonaceous material is at least one selected from the group consisting of activated carbon, carbon nanotubes, and graphene oxide, and the adsorbent has a weight ratio of c to al in the range from 3:1 to 30:1, and a weight ratio of c to o in the range from 1:1 to 10:1..
King Fahd University Of Petroleum And Minerals

Tunable materials

One or more techniques are disclosed for a method for functionalized a graphitic material comprising the steps of: 1) providing a graphitic material; 2) providing a first molecule comprising a first group, a spacer, and a second group; 3) providing a second molecule comprising a third group, a spacer, and a fourth group, wherein the third group is a different group from the first group; and 4) bonding the first molecule and the second molecule to the graphitic material. Also disclosed is a tunable material composition comprising the functionalized carbon nanotubes or functionalized graphene prepared by the methods described herein..
Tesla Nanocoatings, Inc.

Electrically conductive, colored interference pigments

The present invention relates to electrically conductive, coloured interference pigments, in particular flake-form interference pigments, which have an outermost layer which comprises crystalline carbon in the form of graphite and/or graphene, to a process for the preparation of such pigments, and to the use of the pigments prepared in this way.. .
Merck Patent Gmbh

Non-metallic pigments having metal properties

The present invention relates to non-metallic interference pigments, in particular laminar interference pigments, which comprise a thin high-refractive layer and an outermost layer that contains crystalline carbon in the form of graphite and/or graphene. The invention also relates to a method for producing such pigments and the use of the thus produced pigments..
Merck Patent Gmbh

Composite structure comprising a resin loaded with flat graphene sheets having enhanced thermal and electrical conductivity, in particular for a satellite

A composite structure comprising an organic resin and carbon fibers comprises planar structure graphene nanosheets embedded in the resin. This structure combining good properties in terms of mechanical resilience, thermal conductivity and electrical conductivity can advantageously be used for thermal dissipation devices, as solar generator substrate or else as housing of electronic components, carried on board satellites..
Luxembourg Institute Of Science And Technology

Green synthesis of graphene by using tomato juice

Embodiments of the present invention encompass methods of forming graphene from graphene oxide and/or graphite oxide using tomato juice.. .
Qatar University

Transparent heating device with graphene film

The invention concerns a transparent heating device comprising: a graphene film fixed to a transparent substrate; a first electrode (205) connected to a first edge of the graphene film; and a second electrode (206) connected to a second edge of the graphene film, wherein there is a resistance gradient across the graphene film from the first electrode (205) to the second electrode (206).. .

Photovoltaic concentrator for spacecraft power comprising an ultra-light graphene radiator for waste heat dissipation

This invention includes an optical concentrator which focuses incident sunlight onto a photovoltaic cell or group of photovoltaic cells which is mounted in thermal contact with a radiator comprising ultra-light graphene sheet. In the preferred embodiment, the optical concentrator comprises a thin fresnel lens, the photovoltaic cell or group of photovoltaic cells comprises a high-efficiency multi junction device, and the graphene radiator comprises a very thin and light sheet.

Process for graphene foam-protected anode active materials for lithium batteries

A lithium-ion battery anode layer, comprising an anode active material embedded in pores of a solid graphene foam composed of multiple pores and pore walls, wherein (a) the pore walls contain a pristine graphene material having essentially no (less than 0.01%) non-carbon elements or a non-pristine graphene material having 0.01% to 5% by weight of non-carbon elements; (b) the anode active material is in an amount from 0.5% to 95% by weight based on the total weight of the graphene foam and the anode active material combined, and (c) some of the multiple pores are lodged with particles of the anode active material and other pores are particle-free, and the graphene foam is sufficiently elastic to accommodate volume expansion and shrinkage of the particles of the anode active material during a battery charge-discharge cycle to avoid expansion of the anode layer. Preferably, the solid graphene foam has a density from 0.01 to 1.7 g/cm3, a specific surface area from 50 to 2,000 m2/g, a thermal conductivity of at least 100 w/mk per unit of specific gravity, and/or an electrical conductivity no less than 1,000 s/cm per unit of specific gravity..

Graphene-based bolometer

A bolometer. In one embodiment a graphene sheet is configured to absorb electromagnetic waves.

Thin-sheet finfet device

Various methods for fabricating non-planar integrated circuit devices, such as finfet devices, are disclosed herein. An exemplary method includes forming a rib structure extending from a substrate; forming a two-dimensional material layer (including, for example, transition metal dichalcogenide or graphene) on the rib structure and the substrate; patterning the two-dimensional material layer, such that the two-dimensional material layer is disposed on at least one surface of the rib structure; and forming a gate on the two-dimensional material layer.

One-dimensional nanostructure growth on graphene and devices thereof

A method and structure for providing a gaa device. In some embodiments, a substrate including an insulating layer disposed thereon is provided.

Method for manufacturing a semiconductor device

According to one embodiment, a method for manufacturing a semiconductor device is disclosed. The method includes forming a co-catalyst layer and catalyst layer above a surface of a semiconductor substrate.

Supercapacitor having a high volumetric energy density

A process for producing a supercapacitor cell, comprising (a) assembling a porous cell framework composed of a first conductive foam structure, a second conductive foam structure, and a porous separator, wherein the first and/or second conductive foam structure has a thickness no less than 200 μm and at least 80% by volume of pores; (b) preparing a first suspension of an anode active material dispersed in a liquid electrolyte and a second suspension of a cathode active material (e.g. graphene sheets) dispersed in a liquid electrolyte; and (c) injecting the first suspension into pores of the first conductive foam structure to form an anode and injecting second suspension into pores of the second conductive foam structure to form a cathode, wherein the anode active material or the cathode active material constitutes an electrode active material loading >10 mg/cm2, preferably >15 mg/cm2, more preferably >20 mg/cm2..

Fingerprint sensing device with heterogeneous coating structure comprising a dielectric material

The invention relates to a fingerprint sensing device comprising a sensing chip comprising an array of capacitive sensing elements. The sensing device comprises a coating material arranged in a layer on top of the array of sensing elements and comprising a plurality of cavities filled with a dielectric material.

Graphene based conformal heat sink and method therefor

An information handling system includes an electronic assembly, the assembly including heat-generating components arranged on a printed circuit board. The system further includes a conformal coating that is applied over a first region of the electronic assembly.

Enhanced sensitivity of graphene gas sensors using molecular doping

The sensitivity of a graphene gas sensor to a gas analyte molecule may be significantly enhanced using molecular doping, which may be as effective as substitutional doping and more effective than electric-field doping. In particular, the room temperature sensitivity of no2-doped graphene to nh3 was measured to be comparable to the sensitivity of graphene doped with substitutional boron atoms and superior to that of undoped graphene by an order of magnitude.

Graphene oxide prepared by electrochemically oxidizing and cutting end face of carbon-based three-dimensional material and method therefor

The present invention relates to a method for preparing graphene oxide by cutting an end face of a 3-dimensional carbon-based material by electrochemical oxidation and the graphene oxide prepared by the method. The method comprises: connecting a piece of a 3-dimensional carbon-based material as an electrode and another piece of a 3-dimensional carbon-based material or inert material as another electrode to the two electrodes of a dc power supply respectively, wherein an end face of at least one piece of a 3-dimensional carbon-based material serves as the working face and is positioned in contact and parallel with the liquid surface of an electrolyte solution; then electrifying the two pieces for electrolysis, during which the working zone for the end face serving as the working face is between −5 mm below and 5 mm above the liquid surface of the electrolyte solution; and intermittently or continuously controlling the end face within the working zone, such that the graphite lamella on the end face of the at least one piece of the 3-dimensional carbon-based material as an electrode is expansion-exfoliated and cut into graphene oxide by electrochemical oxidation, to obtain a graphene oxide-containing electrolyte solution.

Nanoporous metal-carbon composite

Described here is a metal-carbon composite, comprising (a) a porous three-dimensional scaffold comprising one or more of carbon nanotubes, graphene and graphene oxide, and (b) metal nanoparticles disposed on said porous scaffold, wherein the metal-carbon composite has a density of 1 g/cm3 or less, and wherein the metal nanoparticles account for 1 wt. % or more of the metal-carbon composite.

Graphene oxide membranes and methods related thereto

An improved method for concentrating dispersions of graphene oxide, coating a substrate with a layer of a graphene oxide solution, and producing a supported graphene membrane stabilised by controlled deoxygenation; and graphene-based membranes that demonstrate ultra-fast water transport, precise molecular sieving of gas and solvated molecules, and which show great promise as novel separation platforms.. .

Magnetic graphene-like nanoparticles or graphitic nano- or microparticles and production and uses thereof

The present invention provides a magnetic graphene-like nanoparticle or graphitic nano- or microparticle. The magnetic graphene-like nanoparticle or graphitic nano- or microparticle of the invention exhibits a high relaxivity, and is useful as a mri contrast agent.

Low power biological sensing system

It is recognized that, because of its unique properties, graphene can serve as an interface with biological cells that communicate by an electrical impulse, or action potential. Responding to a sensed signal can be accomplished by coupling a graphene sensor to a low power digital electronic switch that is activatable by the sensed low power electrical signals.

Transparent conductor and device

According to one embodiment, a transparent conductor includes a transparent substrate; a metal nanowire layer disposed on the transparent substrate and including a plurality of metal nanowires; a graphene oxide layer covering the metal nanowire layer; and an electrical insulating resin layer disposed in contact with the graphene oxide layer.. .
Kabushiki Kaisha Toshiba

Bipolar plate for electrochemical cells and the production thereof

The invention relates to a metallic bipolar plate for use in an electrochemical cell, wherein the bipolar plate comprises an electrically conductive graphene-like coating. The graphene-like coating has a layer thickness between 10 nm and 1 μm.
Forschungszentrum Juelich Gmbh

Graphene, power storage device, and electric device

An object is to provide graphene which has high conductivity and is permeable to ions of lithium or the like. Another object is to provide, with use of the graphene, a power storage device with excellent charging and discharging characteristics.
Semiconductor Energy Laboratory Co., Ltd.

Integrated graphite-based structure

A structure is provided that comprises a substrate, a plurality of elements, and a plurality of trenches disposed on the substrate. Each element is separated from adjacent elements by a trench in the plurality of trenches and has a top surface with a first and an opposing second side.
Solan, Llc

Compressive graphene hydrogel and preparation method therefor

This present invention disclosed a compressive graphene hydrogel and relates to a preparation method thereof. The compressive graphene hydrogel is obtained using the oxidized graphene and phytic acid as raw materials, wherein the oxidized graphene is used as the precursor.
Fuzhou University

Multi-layered graphene material having a plurality of yolk/shell structures

Multi-layered graphene materials and methods of making and use are described herein. A multi-layered graphene material can include a plurality of graphene layers having a plurality of intercalated nano- or microstructures that form a plurality of yolk/shell type structures.
Sabic Global Technologies B.v.

Device for measurement of analyte concentration

Described is a personal device and methods for measuring the concentration of an analyte in a sample of gas. The device and method may utilize a chemically selective sensor element with low power consumption integrated with circuitry that enables wireless communication between the sensor and any suitable personal electronic device such as a smartphone, tablet, or computer.
Andas, Inc.

Acoustic paint

An acoustic paint to be applied to the walls of a room in which a source of audible sound is located to improve the acoustic characteristics of the room and correspondingly improve the clarity (e.g., the warmth, richness and detail) of the sound that is generated by the source and detected by the ear of a listener located within the room. The acoustic paint includes a paint foundation into which is mixed a powdered piezoelectric material or a powdered non-piezoelectric crystalline material having a resonant frequency so that the powdered material will react to the sound generated within the room and thereby control the room acoustics depending upon the type of material and the resonant frequency thereof.

Method for the preparation of polyaniline/reduced graphene oxide composites

The present invention concerns a method for obtaining polyaniline/reduced graphene oxide composites comprising the steps of dispersing the graphene oxide in an acid aqueous solution containing an emulsifying agent to obtain a graphene oxide dispersion; dissolving one or more aniline oligomers in an organic solvent to obtain an oligomer solution; mixing the oligomer solution with the graphene oxide dispersion, said oligomer being added in a stoichiometric excess compared to the quantity required to complete the graphene oxide reduction; adding to the suspension of the polyaniline/reduced graphene oxide composite an oxidizing agent in a stoichiometric quantity compared to said excess of oligomer so as to oxidize the excess of said oligomer to obtain a suspension of the polyaniline/reduced graphene oxide composite.. .
Fondazione Istituto Italiano Di Tecnologia

Method for preparing graphene by using high speed homogenization pretreatment and high pressure homogenation

The present invention relates to a method for preparing graphene which comprises subjecting expanded graphite to high speed homogenization to prepare a feed solution and then subjecting the same to high pressure homogenization, thereby increasing the degree of dispersion of expanded graphite in the feed solution and so improving the efficiency of high pressure homogenization. Therefore, the present method has features that the efficiency of graphene preparation is excellent and the size of graphene to be prepared is uniform, compared with a conventional process..
Lg Chem, Ltd.

Method for making graphene

A method for making graphene comprises providing and stacking alternately a plurality of polyimide films and a plurality of carbon papers to form a laminate and conducting carbonization treatment to the laminate to form a intermediate product. The intermediate product is subjected to graphitization treatment to form a polyimide artificial graphite which can be stripped to achieve a graphene..
Foxconn Technology Co., Ltd.

Method for producing molded filter body

A method for producing a molded filter body having a layer of graphene 2 as a filter medium, includes the steps of: forming a layer of a support 5 on a surface of graphite 1; forming support water passage holes in the layer of the support 5; peeling the layer of the support 5 from the graphite 1 in a state of attaching the layer of graphene 2 on the surface of the graphite 1 to the layer of the support 5; and holding the layer of graphene 2 by heating at a low temperature for a predetermined time in the air containing oxygen at 160 to 250° c. And forming graphene water passage holes..

Energy generation system with hydrogen fuel cell-based generation source

System comprising an element for capturing and transforming external light into electricity based on the use of doped graphene; an electricity management control board to which are connected: a battery and a generator for supplying the current needed by a hydrolysis machine connected to the generator; a hydrogen tank connected to the hydrolysis machine; an oxygen tank connected to the hydrolysis machine, for use in space-based systems, which can be vented through an exhaust; a fuel cell or hydrogen cell connected to the hydrogen and oxygen tanks and a water deposit connected on one side to the hydrogen cell from which it receives the water generated and on the other to the hydrolysis machine to which it supplies the water. A self-sufficient or autonomous generation system is achieved..

Antenna-assisted photovoltaic graphene detectors

A photovoltaic photodetector includes a substrate, a graphene layer, and a dielectric layer positioned between the substrate and the graphene layer. One or more first antenna electrodes includes a first metal in direct contact with the graphene layer.

Stacked body and electronic device

A stacked body includes: a substrate made of silicon carbide and having a first main surface forming an angle of 20° or less with a carbon plane; and a graphene film disposed on the first main surface and having an atomic arrangement oriented in relation to an atomic arrangement of silicon carbide forming the substrate. In an exposed surface of the graphene film as seen in plan view, 10 or less regions are present per 1 mm2, the exposed surface being a main surface opposite to the substrate, and the regions each including 10 or more graphene layers and having a circumcircle with a diameter of 5 μm or more and 100 μm or less.

Stacked body and electronic device

A stacked body includes: a substrate made of silicon carbide and having a first main surface forming an angle of 20° or less with a silicon plane; and a graphene film disposed on the first main surface and having an atomic arrangement oriented in relation to an atomic arrangement of silicon carbide forming the substrate. In an exposed surface of the graphene film which is a main surface opposite to the substrate, an area ratio of a region having a full width at half maximum of g′ of 40 cm−1 or less under raman spectroscopy analysis is 50% or more.

Graphene barriers on waveguides

Systems and methods are provided for applying a protective graphene barrier to waveguides and using the protected waveguides in wellbore applications. A well monitoring system may comprise a waveguide comprising a graphene barrier, wherein the graphene barrier comprises at least one material selected from the group consisting of graphene, graphene oxide, and any combination thereof; a signal generator capable of generating a signal that travels through the waveguide; and a signal detector capable of detecting a signal that travels through the waveguide..

Radiofrequency shield for hybrid imaging devices

The invention relates to a hybrid medical pet-spect/mr imaging device comprising at least one scintillating crystal and at least one module for detecting radiation which contains at least one matrix of photodetectors and an electronics section, such that said module has a mechanical structure, the external, internal or both surfaces of which are divided into at least two sections, of which at least one is coated in graphene, and the rest in non-ferromagnetic conductive material, or all the sections are coated in graphene, and such that the coating forms a faraday cage. The invention also relates to a shielding against radiofrequency for a medical imaging device, comprising a graphene coating, which is continuous or in bands, on all the faces of the mechanical structure of the detection module of the device, or a graphene coating, continuous or in bands, on at least one face, combined with a coating of non-ferromagnetic conductive materials on the remaining faces, and said shielding forming a faraday cage..

Methods for in situ monitoring and control of defect formation or healing

Production of perforated two-dimensional materials with holes of a desired size range, a narrow size distribution, and a high and uniform density remains a challenge, at least partially, due to physical and chemical inconsistencies from sheet-to-sheet of the two-dimensional material and surface contamination. This disclosure describes methods for monitoring and adjusting perforation or healing conditions in real-time to address inter- and intra-sheet variability.

Method of making led light bulb with graphene filament

A method of making a led light bulb with the graphene filament contains steps of: a. Providing a flexible substrate, wherein the flexible substrate is flexible printed circuit board (pcb); b.

Self-lubricating composite coating

A self-lubricating solid composite coating configured for an application to timepiece mechanisms, including particles of graphene and/or graphene oxide distributed in a metal matrix.. .

Graphene and the production of graphene

Compositions comprising hydrogenated and dehydrogenated graphite comprising a plurality of flakes. At least one flake in ten has a size in excess of ten square micrometers.

Method for producing noble metal nanocomposites

The method for producing noble metal nanocomposites involves reducing noble metal ions (ag, au and pt) on graphene oxide (go) or carbon nanotubes (cnt) by using artocarpus integer leaves extract as a reducing agent. As synthesized mnps/go and mnps/cnt composites have been characterized using x-ray diffraction (xrd), transmission electron microscope (tem) imaging, and energy dispersive x-ray spectroscopy (edx).

Method for treating graphene sheets for large-scale transfer using free-float method

A method for transferring a graphene sheet from a copper substrate to a functional substrate includes forming the graphene sheet on the copper substrate using chemical vapor deposition, and irradiating the graphene sheet disposed on the copper substrate with a plurality of xenon ions using broad beam irradiation to form a prepared graphene sheet. The prepared graphene sheet is resistant to forming unintentional defects induced during transfer of the prepared graphene sheet to the functional substrate.

Graphene transistor gated by charges through a nanopore for bio-molecular sensing and dna sequencing

A technique for a nanodevice is provided. A reservoir is separated into two parts by a membrane.

Low-adhesion coatings with solid-state lubricants

Some variations provide a low-adhesion coating comprising a continuous matrix containing a first component, a plurality of inclusions containing a second component, and a solid-state lubricant distributed within the coating, wherein one of the first component or the second component is a low-surface-energy polymer, and the other of the first component or the second component is a hygroscopic material. The solid-state lubricant may be selected from graphite, graphene, molybdenum disulfide, tungsten disulfide, hexagonal boron nitride, or poly(tetrafluoroethylene) or other fluoropolymers.

Graphene platelet-based polymers and uses thereof

Provided herein are cross-linked graphene platelet polymers, compositions thereof, filtration devices comprising the cross-linked graphene platelet polymers and/or compositions thereof and method is using and making the same.. .

Membranes with tunable selectivity

Some embodiments comprise membranes comprising a first layer comprising a porous graphene-based material; a second layer comprising a porous graphene-based material; a channel positioned between the first layer and the second layer, wherein the channel has a tunable channel diameter; and at least one spacer substance positioned in the channel, wherein the spacer substance is responsive to the environmental stimulus. In some cases, the membranes have more than two layers of porous graphene-based material.

Selective interfacial mitigation of graphene defects

A method for the repair of defects in a graphene or other two-dimensional material through interfacial polymerization.. .

Methods for in vivo and in vitro use of graphene and other two-dimensional materials

Two-dimensional materials, particularly graphene-based materials, having a plurality of apertures thereon can be formed into enclosures for various substances and introduced to an environment, particularly a biological environment (in vivo or in vitro). One or more selected substances can be released into the environment, one or more selected substances from the environment can enter the enclosure, one or more selected substances from the environment can be prevented from entering the enclosure, one or more selected substances can be retained within the enclosure, or combinations thereof.

Rechargeable magnesium ion battery with nanoporous-carbon electrode for reversible magnesium ion intercalation

Nanoporous-carbon grown via pulsed laser deposition can be used as an electrically conductive anode host material for mg2+ intercalation in rechargeable magnesium batteries. Nanoporous carbon has high surface area, and an open, accessible pore structure tunable via mass density that can improve diffusion.
Sandia Corporation

Grid electrode for polar solvent-based hydro-pyroelectrodynamic electrical energy storage device

An electrode having a planar electrode body with a plurality of hexagonally shaped through-holes formed therein. The planar electrode body is configured for use in a polar, protic, or aprotic solvent of a hydro-pyroelectrodynamic (“h-ped”) energy storage device.
Green-on-green Energy, Inc.

Methods for mass-producing silicon nano powder and graphene-doped silicon nano powder

Disclosed is a facile and cost effective method of producing metal-doped nano silicon powder or graphene-doped metal-doped silicon nano powder having a particle size smaller than 100 nm. The method comprises: (a) preparing a silicon precursor/metal precursor/graphene nano composite; (b) mixing the silicon precursor/metal precursor/graphene nano composite with a desired quantity of magnesium; (c) converting the silicon precursor to form a mixture of graphene-doped silicon and a reaction by-product through a thermal and/or chemical reduction reaction; and (d) removing the reaction by-product from the mixture to obtain graphene-doped metal-doped silicon nano powder..
Nanotek Instruments, Inc.

Graphene oxide as a sulfur immobilizer in high performance lithium/sulfur cells

The loss of sulfur cathode material as a result of polysulfide dissolution causes significant capacity fading in rechargeable lithium/sulfur cells. Embodiments of the invention use a chemical approach to immobilize sulfur and lithium polysulfides via the reactive functional groups on graphene oxide.
The Regents Of The University Of California

Light emission from electrically biased graphene

Methods and systems for emitting light from electrically biased graphene are provided. An exemplary method of generating a light emission from graphene includes suspending a graphene membrane using at least one mechanical clamp and providing a current to the graphene membrane to establish a source-drain bias voltage along the graphene membrane..
The Trustees Of Columbia University In The City Of New York

Thin film transistor and producing method thereof, and array substrate

A thin film transistor and a producing method thereof, and an array substrate, which belong to a technical field of the thin film transistor, can solve a problem of poor performance of a conventional thin film transistor. The producing method of the thin film transistor comprises: s1: forming a gate electrode (11) composed of graphene; s2: forming a gate insulating layer (12) composed of oxidized graphene; s3: forming an active region (13) composed of doped oxidized graphene or doped graphene; s4: forming a source electrode (14) and a drain electrode (15) composed of graphene, wherein, the graphene composing the source electrode (14), the drain electrode (15) and the gate electrode (11) is formed by reducing oxidized graphene, and the doped oxidized graphene or doped graphene composing the active region (13) is formed by treating oxidized graphene..
Boe Technology Group Co., Ltd.

Particle manipulation and trapping in microfluidic devices using two-dimensional material

Method, apparatus, and computer program product for a microfluidic channel having a cover opposite its bottom and having electrodes with patterned two-dimensional conducting materials, such as graphene sheets integrated into the top of its bottom. Using the two-dimensional conducting materials, once a fluid sample is applied into the channel, highly localized modulated electric field distributions are generated inside the channel and the fluid sample.
International Business Machines Corporation

Graphene heat dissipation baking varnish

A highly porous heat dissipation coating by graphene-rich baking varnish consists of: graphene nanoflakes, at least one dispersants, binders, and carriers. The amount of graphene-rich nanoflakes accounts for 10 to 70 wt % of solid composition of a graphene baking varnish.
Bgt Materials Limited

Thermal balancing coating and a manufacturing method thereof

A manufacturing method for a thermal balancing conductive coating includes steps as: a) providing gluey liquid mixed by a first solution and a compound substance with a weight ratio ranging from 1:0.6 to 1:1.4; the compound substance is selected from a group consisting of fluorocarbon resin, fluororesin, acrylic acid resin, polyurethane, polyurea resin, unsaturated polyester, silicon resin, and mixtures thereof; b) providing a filler material mixed by a second solution and a filler substance with a weight ratio ranging from 1:0.1 to 1:0.6 and another weight ratio of the compound substance to the filler substance from 1:0.3 to 1:0.8; the filler substance includes a main ingredient selected from a group consisting of graphite, graphene platelets, graphene, graphite fiber, graphene fiber, bn, mica, and mixtures thereof; c)mixing the gluey liquid and the filler material to produce a thermal balancing conductive material, so as to form a thermal balancing conductive coating.. .
M-victory Specific Material Co., Ltd.

Heat-dissipating coating and a manufacturing method thereof

A manufacturing method for a heat-dissipating coating includes steps as: a) providing a gluey liquid mixed by a first solution and a compound substance at a weight ratio of 1:0.6 to 1:1.4; the compound substance is selected from a group consisting of fluorocarbon resin, fluororesin, acrylic acid resin, polyurethane, polyurea resin, unsaturated polyester, epoxide, and mixtures thereof; b) providing a filler material mixed by a second solution and a filler substance at a weight ratio of 1:0.3 to 1:0.8 and another weight ratio of the compound substance to the filler substance being 1:0.1 to 1:0.6; the filler substance is selected from a group consisting of bamboo charcoal, carbon nanotube, graphite, graphene platelets, graphene, carbon spheres, carbon fibers, bn, aln, mica, sio2, tio2, sic, zno, geo2, and mixtures thereof; c) mixing the gluey liquid and the filler material to produce a heat-dissipating material, so as to form a heat-dissipating coating.. .
M-victory Specific Material Co., Ltd.

Sintering-free inorganic ceramic brick-plate and its preparation method

A sintering-free inorganic ceramic brick-plate and its preparation method are disclosed. The sintering-free inorganic ceramic brick-plate includes following components by mass parts: 25-40 parts of magnesium oxide; 20-35 parts of magnesium chloride; 20-30 parts of fumed silica; 10-20 parts straw powders; 0.1-0.3 parts of graphene powders with a particle size of 2000 meshes; and 0.2-0.4 parts of airgel powders with a particle size of 100 nm.

Three-dimensional polyhedral microscale graphene-based structures and methods of manufacture

Methods of making a microscale, free-standing, 3d, polyhedral, hollow, go (or other graphene-based) structure using an origami-like self-folding approach. The origami-like self-folding process allows for easy control of size, shape, and thickness of graphene-based membranes, which, in turn, permits fabrication of freestanding 3d microscale polyhedral go structures for example.
Regents Of The University Of Minnesota

Patterning of graphene circuits on flexible substrates

A process for forming a graphene circuit pattern on an object is described. A graphene layer is grown on a metal foil.
Compass Technology Company Limited

Method of manufacturing positive electrode active material for lithium ion battery

At least one of an aqueous solution a containing lithium, an aqueous solution b containing iron, manganese, cobalt, or nickel, and an aqueous solution c containing a phosphoric acid includes graphene oxide. The aqueous solution a is dripped into the aqueous solution c, so that a mixed solution e including a precipitate d is prepared.
Semiconductor Energy Laboratory Co., Ltd.

Method of forming a graphene structure

In various embodiments, a method of forming a graphene structure is provided. The method may include forming a body including at least one protrusion, and forming a graphene layer at an outer peripheral surface of the at least one protrusion..
Infineon Technologies Ag

Sucrose treated carbon nanotube and graphene yarns and sheets

Consolidated carbon nanotube or graphene yarns and woven sheets are consolidated through the formation of a carbon hinder formed from the dehydration of sucrose. The resulting materials, on a macro-scale are lightweight and of a high specific modulus and/or strength.
U.s.a. As Represented By The Administrator Of The National Aeronautics And Space Administration

Tooling having a durable metallic surface over an additively formed polymer base and forming such tooling

A tool and a method for forming a tool are disclosed. The tool has a base layer additively formed from a polymer material in a desired tool shape.
The Boeing Company

Conductive adhesive with spherical graphene and manufacturing method thereof

A conductive adhesive includes spherical graphene and an epoxy gel system that includes epoxy, a hardener, and an accelerant. A mass ratio of the epoxy gel system to the spherical graphene is 100:2-30.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Novel graphene-like si2bn material and making thereof

This application relates to monolayers of si2bn or c2bn, arranged in a graphiticized hexagonal arrangement. Each si/c atom has a si/c, b, and n nearest neighbor, while each b (n) has two si/c's and one n (b) as nearest neighbors.
University Of Kentucky Research Foundation

Carbon material, anode material and spacer additive for lithium ion battery

The present invention provides a novel carbon material comprising a three-dimensional graphene network constituting a plurality of cells interconnecting as a whole, where at least one of the cells has single-layer graphene wall. The carbon material is suitable for a lithium ion battery..
Nec Corporation

Method for forming negative electrode and manufacturing lithium secondary battery

The number of steps is reduced in the formation process of an electrode. Deterioration of the electrode is suppressed.
Semiconductor Energy Laboratory Co., Ltd.

Metal-air battery and manufacturing the same

A metal-air battery includes an anode portion including a metal; a cathode portion including a porous layer, wherein the porous layer includes a reduced non-stacked graphene oxide; and an electrolyte disposed between the anode portion and the cathode portion.. .
Samsung Electronics Co., Ltd.

Systems and methods for energy storage cells having improved intercalation

An energy storage cell includes an enclosure, a cathode, a separator, and an anode in electro-chemical communication with each other to produce electric current. The cathode, separator, and anode are located within the enclosure.
Achilles Technical Solutions Llc

Semiconductor device having a graphene layer, and manufacturing thereof

A method for manufacturing a semiconductor device includes: providing a carrier wafer and a silicon carbide wafer; bonding a first side of the silicon carbide wafer to the carrier wafer; splitting the silicon carbide wafer bonded to the carrier wafer into a silicon carbide layer thinner than the silicon carbide wafer and a residual silicon carbide wafer, the silicon carbide layer remaining bonded to the carrier wafer during the splitting; and forming a graphene material on the silicon carbide layer.. .
Infineon Technologies Ag

Capacitive sensor and manufacturing method thereof

A capacitive sensor is disclosed. The capacitive sensor includes a substrate, a first electrode and a second electrode formed on the substrate, an insulation layer formed on the substrate on which the first electrode and the second electrode are formed, and a sensing layer that is formed on the insulation layer and includes graphene..
Korea University Research And Business Foundation

Resin composition, molded product of resin composition, and joint structure of molded product of resin composition

A resin composition includes a polyamide resin, and a graphene oxide.. .
Fuji Jukogyo Kabushiki Kaisha

Graphene manufacture

A method of manufacturing a graphene sheet comprising the steps of: providing a container containing liquid and a volume above the liquid; supplying carbon atoms to the volume; and allowing carbon atoms to settle on the surface of the liquid and to coalesce to form the graphene sheet.. .
Bae Systems Plc

Conductors, making the same, and electronic devices including the same

A conductor includes a substrate, a first conductive layer disposed on the substrate and including two or more islands including graphene, and a second conductive layer disposed on the first conductive layer and including a conductive metal nanowire, wherein at least one of an upper surface and a lower surface of the islands including graphene includes a p-type dopant.. .
Samsung Electronics Co., Ltd.

Electrochemically modified carbon material for lithium-ion battery

The present invention provides an anode material for a lithium-ion battery comprising a carbon particle having a particle size of 5 μm to 30 μm, and including defective portions on a surface of the carbon particle, the defective portions being grooves formed by cathodically exfoliating graphene layers from the carbon particle.. .
Nec Corporation

Synthesis cathode material in lithium-sulfur battery

The present invention relates to a method for synthesizing graphene/sulfur composite, involving the steps of mixing graphene oxide (go) with a hydrogen sulfide (h2s)-releasing agent in a sealed vessel, causing the h2s-releasing agent to release hydrogen sulfide, and then allowing the hydrogen sulfide to react with the graphene oxide at an elevated temperature and pressure to form said graphene/sulfur composite.. .
The Hong Kong Polytechnic University

Hybrid carbon-metal interconnect structures

Embodiments of the present disclosure are directed towards techniques and configurations for hybrid carbon-metal interconnect structures in integrated circuit assemblies. In one embodiment, an apparatus includes a substrate, a metal interconnect layer disposed on the substrate and configured to serve as a growth initiation layer for a graphene layer and the graphene layer, wherein the graphene layer is formed directly on the metal interconnect layer, the metal interconnect layer and the graphene layer being configured to route electrical signals.
Intel Corporation

Tft substrate structure and manufacturing method thereof

A manufacturing method of a tft substrate structure is provided, in which a graphene layer is formed on a semiconductor layer and after the formation of a second metal layer, the second metal layer is used as a shielding mask to conduct injection of fluoride ions into the graphene layer to form a modified area in a portion of the graphene layer that is located on and corresponds to a channel zone of the semiconductor layer. The modified area of the graphene layer shows a property of electrical insulation and a property of blocking moisture/oxygen so as to provide protection to the channel zone.
Shenzhen China Star Optoelectronics Technology Co. , Ltd.

Sub thz to mid infrared tunable semiconductor plasmonics

A tunable plasmon resonator, comprising a plasmon resonance layer made of graphene, a crystalline group-iv-semiconductor material or a crystalline group-iii-v semiconductor material, and arranged on a carrier substrate, the plasmon resonance layer having a plasmon resonance region that is exposed to a sensing volume and a tuning device that is integrated into the plasmon resonator and arranged and configured to modify a density of free charge carriers in the plasmon resonance region or to modify an effective mass amount of the free charge carriers in the plasmon resonance region by applying of a control voltage to tuning control electrode(s) of the tuning device, thereby setting a plasmon frequency of plasmon polaritons in the plasmon resonance region to a desired plasmon frequency value within a plasmon frequency tuning interval, for resonance excitation of plasmon polaritons by incident electromagnetic waves of a frequency corresponding to the set plasmon frequency value.. .
Universitat Kassel

Graphene-polymer-enzyme hybrid nanomaterials for biosensors

The invention relates to a general chemical method for the synthesis of biocompatible hybrid nanomaterials which can be used in the development of new-type enzyme based biosensors. A one-step facile method is presented, in which polyethylenimine (pei) serves as both a reducing agent for the reduction of graphene oxide (go) into reduced graphene oxide (rgo) and a biological matrix for accommodation of enzymes..
Danmarks Tekniske Universitet

Apparatus for manufacturing large scale single crystal monolayer of hexagonal boron nitride and manufacturing the same

A method for manufacturing a large-scale single crystal monolayer of hbn including: preparing a single crystal copper substrate of (111) face in a chemical vapor deposition (cvd) apparatus; removing impurities of the single crystal copper substrate of (111) face; forming a plurality of hbn crystal seeds by depositing a vaporized ammonia borane or a vaporized borazine on the surface of the single crystal copper substrate from which the impurities are removed; and forming a large-scale single crystal monolayer of hbn grown by mutual coherence between the hbn crystal seeds, an apparatus for manufacturing the same, and a substrate for a monolayer uv graphene growth using the same.. .
Korea Research Institute Of Standards And Science

Graphene synthesis chamber and synthesizing graphene by using the same

A graphene synthesis chamber includes: a chamber case in which a substrate including a metal thin film is placed; a gas supply unit which supplies at least one gas comprising a carbon gas into an inner space of the chamber case; a main heating unit which emits at least one light to the inner space to heat the substrate; and at least one auxiliary heating unit which absorbs the at least one light and emits radiant heat toward the substrate.. .
Hanwha Techwin Co., Ltd.

Method for forming base film of graphene, graphene forming method, and forming base film of graphene

A method for forming a base film of a graphene includes: forming a metal film as a base film of a graphene on a substrate by chemical vapor deposition (cvd) of an organic metal compound using a hydrogen gas and an ammonia gas; heating the substrate to a temperature at which impurities included in the formed metal film are eliminated as a gas; and heating the substrate to a temperature at which crystal grains of metal are grown in the metal film, wherein the temperature of the substrate in the heating the substrate to a temperature at which crystal grains of metal are grown in the metal film is higher than the temperature of the substrate in the heating the substrate to a temperature at which impurities included in the formed metal film are eliminated as a gas.. .
Tokyo Electron Limited

Method for continuous production of high quality graphene

A continuous method for manufacturing graphene films using a metal substrate, wherein a first surface of the metal substrate is heated such that a top layer of the first surface melts to form a molten metal layer, and devices for carrying out the same.. .
Honda Motor Co., Ltd.

Method for preparing three-dimensional porous graphene material

A method for preparing a three-dimensional porous graphene material, including: a) constructing a cad model corresponding to a required three-dimensional porous structure, and designing an external shape and internal structure parameters of the model; b) based on the cad model, preparing a three-dimensional porous metal structure using a metal powder as material; c) heating the three-dimensional porous metal structure and preparing a metal template of the required three-dimensional porous structure; d) placing the metal template in a tube furnace and heating the metal template to a temperature of between 800 and 1000° c.; standing for 0.5-1 hr, introducing a carbon source to the tube furnace for continued reaction, cooling resulting products to room temperature to yield a three-dimensional graphene grown on the metal template; and e) preparing a corrosive solution, and immersing the three-dimensional graphene in the corrosive solution.. .
Huazhong University Of Science And Technology

Graphene-containing nanocomposite materials for sequestration of carbon dioxide

The present invention generally relates to co2-adsorbing, graphene-containing nanocomposites, methods of making the same, and methods of using the same.. .
Vaon, Llc

Method for preparing tubular graphene composite membrane

A method for preparing a graphene composite membrane on the surface of a tubular support. In the method, a tubular ceramic membrane is used as the support, a layer of graphene material is uniformly prepared on the surface of the support by vacuum suction, and the defect-free tubular graphene composite membrane is obtained by the drying process..
Nanjing University Of Technology

Proton conducting membrane comprising monolithic 2d material and ionomer, a process for preparing same and use of same in fuel cell and hydrogen gas sensor

The present invention relates to a graphene-based or other 2-d material membrane which allows the passage of protons and deuterons and to a method of facilitating proton or deuteron permeation through such a membrane. Monocrystalline membranes made from mono- and few-layers of graphene, hbn, molybdenum disulfide (mos2), and tungsten disulfide (ws2) etc.
The University Of Manchester

Metal-doped graphene and growth the same

A metal-doped graphene and a growth method of the same are provided. The metal-doped graphene includes graphene and metal elements, wherein the metal elements accounts for 1-30 at % based on the total content of the metal-doped graphene.
Industrial Technology Research Institute

Semiconductor device and manufacturing the same

According to one embodiment, a semiconductor device is disclosed. The device includes a substrate, and a first interconnect on the substrate.
Kabushiki Kaisha Toshiba

Substrate and electronic device

A substrate includes: a support substrate having a first main surface and a surface layer region which includes at least the first main surface and is formed of any one material selected from the group consisting of boron nitride, molybdenum disulfide, tungsten disulfide, niobium disulfide, and aluminum nitride; and a graphene film disposed on the first main surface and having an atomic arrangement oriented in relation to an atomic arrangement of the material forming the surface layer region. Accordingly, the substrate is provided that enables a high mobility to be stably ensured in an electronic device manufactured to include the graphene film forming an electrically conductive portion..
Sumitomo Electric Industries, Ltd.

Resilient radio-frequency tag

A transponder comprises a first polymer layer. A radio frequency (“rf”) transponder is affixed to the first polymer layer, wherein the rf transponder includes a processor in electrical communication with a graphene-based antenna.
Vorbeck Materials Corp.

Method for manufacturing pdlc display device and pdlc display device

The present invention provides a method for manufacturing a pdlc display device and a pdlc display device. The method for manufacturing a pdlc display device according to the present invention includes mixing pdlc with graphene nanoparticles to improve the response speed of the pdlc and reduce a driving voltage of the pdlc, and also combines qds to make a novel high color saturation display device, which requires no alignment layer and polarizer, providing a simple manufacturing process, showing an innovated and unique displaying effect, demonstrating at least four displaying modes of red, green, blue, and indistinctness, and overcoming light leakage of pixels and color mixture occurring in an existing pdlc display device.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

An controllably populating a channel with charge carriers

An apparatus comprising: a channel (4) configured to conduct charge carriers; and a charge carrier generator (22) configured to generate charge carriers for populating the channel, wherein the charge carrier generator is configured for resonance energy transfer (fret). The charge carrier generator may be a nanoparticle or quantum dot (22), functionalised with at least one moiety (28a, 28b) to enable detection of an analyte.
Nokia Technologies Oy

Apparatus and mitigation of alterations in mass spectrometry in the presence of hydrogen

Gas chromatograph-mass spectrometer comprising an ion source, the walls of which are realized or covered with at least one layer of graphene. Thus realized, the gas chromato graph-mass spectrometer proves to be particularly suited to the analysis samples containing hydrogen in addition to the substances to be analyzed.

Gallium nitride growth on silicon

Systems and methods for gallium nitride growth on silicon. A semiconductor device, comprising a silicon (001) substrate.
Innosys, Inc.

Electrochemical production of graphene sheets directly from graphite mineral

A method of producing graphene sheets directly from graphite mineral (graphite rock) powder, comprising: (a) forming an intercalated graphite compound by an electrochemical intercalation procedure conducted in an intercalation reactor, containing (i) a liquid solution electrolyte comprising an intercalating agent and a graphene plane-wetting agent dissolved therein; (ii) a working electrode that contains the graphite material powder as an active material; and (iii) a counter-electrode, and wherein a current is imposed upon the working electrode and counter electrode at a current density sufficient for effecting electrochemical intercalation of the intercalating agent and/or wetting agent into interlayer spacing, wherein the wetting agent is selected from melamine, ammonium sulfate, sodium dodecyl sulfate, na(ethylenediamine), tetraalkyammonium, ammonia, carbamide, hexamethylenetetramine, organic amine, poly(sodium-4-styrene sulfonate), or a combination thereof; and (b) exfoliating and separating the intercalated graphite compound using ultrasonication, thermal shock exposure, and/or a mechanical shearing treatment to produce graphene sheets.. .

Enhanced exothermic reaction (eer) reactor

A method and apparatus for carrying out highly efficient switching inductive magnetic enhanced exothermic reactions (eers) on the surface of electrodes with a conductive electrically heated lithium-polymer electrolyte with switching magnetic fields while under hydrogen loading pressures to produce a second exothermal electrode surface and/or plasma heat reaction to heat a fluid, gas, or heat thermoelectric modules to produce electricity and store energy, while producing a cross-linked carbon graphene by-product at elevated temperatures using an auger to pump and transport the electrolyte fuel in a continuous or intermittent process or a onetime use. The device can self-start from an internal stored charge to electrically start a heated reaction..

Methods of fabricating pdlc thin films

The present provides a method of fabricating a pdlc thin film. The method of fabricating the pdlc of the present application forms the first solution by mixing the liquid crystal and the graphene nanoparticles; prepares the prepolymer by using the citric acid and the 1,8-octanediol, or the citric acid, the 1,8-octanediol and the 1,8-octanediol; forms the second solution by dissolving the prepolymer in the anhydrous ethanol; then obtains the mixture prepolymer of the polymer dispersed liquid crystal and the graphene nanoparticles by mixing and uniformly stirring the first solution and the second solution; and obtains the pdlc thin film after the mixture prepolymer is polymerized for several days.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Tunable materials

One or more techniques are disclosed for a method for functionalized a graphitic material comprising the steps of: 1) providing a graphitic material; 2) providing a first molecule comprising a first group, a spacer, and a second group; 3) providing a second molecule comprising a third group, a spacer, and a fourth group, wherein the third group is a different group from the first group; and 4) bonding the first molecule and the second molecule to the graphitic material. Also disclosed is a tunable material composition comprising the functionalized carbon nanotubes or functionalized graphene prepared by the methods described herein..
Tesla Nanocoatings, Inc.

Tunable materials

One or more techniques are disclosed for a method for functionalized a graphitic material comprising the steps of: 1) providing a graphitic material; 2) providing a first molecule comprising a first group, a spacer, and a second group; 3) providing a second molecule comprising a third group, a spacer, and a fourth group, wherein said third group is a different group from said first group; and 4) bonding the first molecule and the second molecule to the graphitic material. Also disclosed is a tunable material composition comprising the functionalized carbon nanotubes or functionalized graphene prepared by the methods described herein..
Tesla Nanocoatings, Inc.

Methods for producing graphene with tunable properties by a multi-step thermal reduction process

A process for the preparation of graphene includes the steps of a) providing flash thermal treatment of a graphite oxide at a temperature up to 700° c. Sufficient to produce exfoliation and under inert atmosphere and b) cooling the material obtained in the previous step below 90° c.
Repsol, S.a.

Graphene dispersant and application thereof

The present disclosure provides a method for dispersing graphene. The method includes the following steps: providing a graphene material and a graphene dispersant, wherein the graphene dispersant comprises aniline oligomer or aniline oligomer derivative, the aniline oligomer or aniline oligomer derivative is an electroactive polymer, and the aniline oligomer or aniline oligomer derivative is able to combine with the graphene material via π-π bond; and adding the graphene material and the graphene dispersant to a dispersing medium, making the aniline oligomer or aniline oligomer derivative combine with the graphene material via π-π bond, and dispersing the graphene material in the dispersing medium by the graphene dispersant..
Ningbo Institute Of Materials Technology And Engineering, Chinese Academy Of Sciences

Graphene surface functionality transfer

A method of transferring functionalized graphene comprising the steps of providing graphene on a first substrate, functionalizing the graphene and forming functionalized graphene on the first substrate, delaminating the functionalized graphene from the first substrate, and applying the functionalized graphene to a second substrate.. .
The Government Of The United States Of America, As Represented By The Secretary Of The Navy

Graphene-based rotman lens

Embodiments of the present invention relate to graphene-based rotman lenses. In an embodiment, a lens is formed on a surface of a dielectric plate.
Vorbeck Materials Corp.

Graphene compound, forming graphene compound, and lithium-ion storage battery

A material that can be used in a wide temperature range is provided. A graphene compound includes graphene or graphene oxide and a substituted or unsubstituted chain group, the chain group includes two or more ether bonds, and the chain group is bonded to the above graphene or graphene oxide through a si atom.
Semiconductor Energy Laboratory Co., Ltd.

Cathode material preparation method, cathode material and lithium-ion battery

The present invention is related to the method for producing the cathode material, cathode material and lithium-ion battery. The present invention provides the higher capacity and number of recharge cycles.
Obshhestvo S Ogranichennoj Otvetsvennost'ju "lition"

Graphene display devices and the display driving methods thereof

A graphene display device includes a graphene display unit and a display control unit electrically connected with the graphene display unit. The graphene display unit includes a plurality of graphene light emitting structures constituting dynamic sub-pixels of the graphene display unit.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Graphene-semiconductor schottky junction photodetector of having tunable gain

Disclosed herein is a photodetector utilizing graphene. A single-layer graphene channel is formed on a semiconductor substrate doped with n-type impurity.
Gwangju Institute Of Science And Technology

Graphene wiring structure and manufacturing graphene wiring structure

A graphene wiring structure of an embodiment has a multilayered graphene having a plurality of planar graphene sheets laminated, and a first interlayer substance being a metal oxyhalide between the plurality of planar graphene sheets.. .
Kabushiki Kaisha Toshiba

Plasma-enhanced chemical vapor deposition methods for graphene deposition

A graphene deposition process. The process includes the steps of placing a substrate into a deposition chamber and heating the chamber, generating radio frequency plasma at a location proximate to the substrate while flowing a precursor gas containing carbon through the plasma and over the substrate..
Purdue Research Foundation

Method for manufacturing flexible graphene electrically conductive film

A method for manufacturing a flexible graphene electrically conductive film includes (1) providing a base and forming a graphene layer on a surface of the base; (2) providing polyvinyl alcohol, dissolving polyvinyl alcohol in water and heating to form a colloidal solution, which after cooling, forms a polyvinyl alcohol colloidal solution; and coating the polyvinyl alcohol colloidal solution on a surface of the graphene layer and drying so as to form a supporting layer on the surface of the graphene layer; (3) removing the base from the graphene layer; and (4) dissolving the supporting layer on the graphene layer in water so as to obtain a flexible graphene electrically conductive film that is free of surface residue.. .
Wuhan China Star Optoelectronics Technology Co., Ltd.

Wear-resistant liquid-based coatings for glass

A sol-gel method for forming durable, scratch-resistant coatings on glass substrates. Zirconia coatings, for example, are formed from a solution of zirconium oxychloride octahydrate in an organic, polar, aprotic solvent such as dimethylformamide.
Corning Incorporated

Methods of forming graphene-coated diamond particles and polycrystalline compacts

Coated diamond particles have solid diamond cores and at least one graphene layer. Methods of forming coated diamond particles include coating diamond particles with a charged species and coating the diamond particles with a graphene layer.
Baker Hughes Incorporated

Graphene-based inorganic-organic hybrid materials and separation of racemic mixtures

A variety of inorganic-organic hybrid materials and various methods for preparing and using the same are described. The hybrid materials are graphene or graphitic materials populated with organic molecules and may have a variety of surface defects, pits or three-dimensional architecture, thereby increasing the surface area of the material.
Stc.unm

Circuit board and manufacturing method thereof

A circuit board is disclosed. In addition to insulating layers, the circuit board includes a structure for heat transfer that includes a first layer that is formed of graphite or graphene, a second layer that is formed of metallic material and disposed on one surface of the first layer, and a third layer that is formed of metallic material and disposed on the other surface of the first layer, and at least a portion of the structure for heat transfer is inserted into an insulation layer.
Samsung Electro-mechanics Co., Ltd.

Graphene oxide based acoustic transducer methods and devices

Materials used in acoustic transducer membranes need very specific qualities that in any real system require many tradeoffs to be made. graphene and graphene related materials are a newly discovered class of materials with some exceptional properties that offer the potential for significant contributions to the performance of many acoustical transduction systems.
The Royal Institution For The Advancement Of Learning/mcgill University

A ming a graphene oxide-reduced graphene oxide junction

A method including a deposition step comprising depositing a layer of graphene oxide; a deposition step including selectively exposing a region of the deposited graphene oxide layer to electromagnetic radiation to form a region of reduced graphene oxide adjacent to a neighbouring region of unexposed graphene oxide, the graphene oxide and adjacent reduced graphene oxide regions forming a junction therebetween to produce a graphene oxide-reduced graphene oxide junction layer; and repeating the deposition and exposure steps for one or more further respective layers of graphene oxide, over an underlying graphene oxide-reduced graphene oxide junction layer, to produce an apparatus in which the respective junctions of the graphene oxide-reduced graphene oxide layers, when considered together, extend in the third dimension.. .
Nokia Technologies Oy

Apparatus and associated methods for electrical storage

An apparatus including a first electrode, a second electrode and an electrolyte, the first electrode including graphene oxide and configured to generate protons in the presence of water to produce a potential difference between the first and second electrodes, the electrolyte configured to enable the generated protons to flow from the first electrode to the second electrode when the first and second electrodes are connected by an external circuit, wherein the electrolyte includes a room-temperature ionic fluid configured to absorb water from the surrounding environment and deliver said water to the first electrode to facilitate the generation of protons.. .
Nokia Technologies Oy

Photodiode using graphene-silicon quantum dot hybrid structure and manufacturing the same

Disclosed is a photodiode, which includes a graphene-silicon quantum dot hybrid structure, having improved optical and electrical characteristics by controlling the sizes of silicon quantum dots and the doping concentration of graphene. The photodiode including the graphene-silicon quantum dot hybrid structure of the present disclosure may be easily manufactured, may be manufactured over a large area, has a wide photodetection band from the ultraviolet light region to the near infrared region, and allows selective absorption energy control..
University-industry Cooperation Group Of Kyung Hee University

Multifunctional compositions and material laminates with graphitic or other nanomaterials

Compositions and methods for improved materials and material laminates with graphitic or inorganic/organic nanomaterials are presented. Graphitic or inorganic/organic nanomaterials, such as carbon nanotubes, carbon nanofibers, graphenes or graphene oxides, are introduced into an aqueous composition as fillers to provide a graphitic or inorganic/organic nanocomposite.
University Of Houston System

Fabrication of carbon nanoribbons from carbon nanotube arrays

Inter-allotropic transformations of carbon are provided using moderate conditions including alternating voltage pulses and modest temperature elevation. By controlling the pulse magnitude, small-diameter single-walled carbon nanotubes are transformed into larger-diameter single-walled carbon nanotubes, multi-walled carbon nanotubes of different morphologies, and multi-layered graphene nanoribbons..
Massachusetts Institute Of Technology

Method of making a transparent conductive composite material

A method of making a transparent conductive material includes: preparing a reactive solution that contains a solvent, a metal salt which is dissolved in the solvent, and a powder of graphene oxide which is dispersed in the solvent; and simultaneously reducing metal ions of the metal salt and the graphene oxide in the reactive solution to form a plurality of core-shell nanowires, each of which includes a core of a metal reduced from the metal ions, and a shell of graphene surrounding the core.. .
National Tsing Hua University

Semiconductor devices including field effect transistors and methods of forming the same

A semiconductor device includes an active pattern provided on a substrate and a gate electrode crossing over the active pattern. The active pattern includes a first buffer pattern on the substrate, a channel pattern on the first buffer pattern, a doped pattern between the first buffer pattern and the channel pattern, and a second buffer pattern between the doped pattern and the channel pattern.
Samsung Electronics Co., Ltd.

Doped graphene electrodes as interconnects for ferroelectric capacitors

A ferroelectric capacitor having a doped graphene bottom electrode and uses thereof are described. The doped graphene bottom electrode layer is deposited on a substrate with a ferroelectric layer deposited between the doped graphene layer and a top electrode..
Sabic Global Technologies B.v.

Methods of forming graphene contacts on source/drain regions of finfet devices

One illustrative method disclosed herein includes forming a gate structure above a portion of a fin and performing a first epitaxial growth process to form a silicon-carbide (sic) semiconductor material above the fin in the source and drain regions of a finfet device. In this example, the method also includes performing a heating process so as to form a source/drain graphene contact from the silicon-carbide (sic) semiconductor material in both the source and drain regions of the finfet device and forming first and second source/drain contact structures that are conductively coupled to the source/drain graphene contact in the source region and the drain region, respectively, of the finfet device..
Globalfoundries Inc.

Conducting elastomers

Embodiments of the present invention relate to conducting elastomers and associated fabrication methods. In one embodiment, the conducting elastomer comprises a filler powder and a polymer.

Magnetic field sensor using in situ solid source graphene and graphene induced anti-ferromagnetic coupling and spin filtering

A magnetic field sensor based on two anti-ferromagnetically coupled magnetic layers separated by multilayer graphene, prepared in a single sputter chamber without a vacuum break.. .
The Government Of The United States Of America, As Represented By The Secretary Of The Navy

Graphene-modified electrodes

The specification provides an assay electrode including a composite containing a matrix and a multiplicity of graphene particles dispersed therein.. .
Meso Scale Technologies, Llc.

Method to massively manufacture carbon fibers through graphene composites and the use thereof

This invention innovates a low cost method to synthesize carbon fibers through graphene composites, which are fabricated through chemical treatment of graphite. This invention also is related to the applications of thereof carbon fibers in different fields.

Method of forming a dielectric through electrodeposition on an electrode for a capacitor

The present invention relates to a method for forming a capacitor having carbon or metal electrodes and an electrolyte which is also a source of electropolymerisable anions. Applying a sufficiently positive voltage, a thin dielectric layer forms at the positive electrode, enabling the use of cell voltages higher than 3.5 v.
University Of Tartu

Two-dimensional materials

A method of preparing a 2d material (e.g. graphene or of boron nitride), the method comprising: (i) selecting a fluid comprising the 2d material dispersed in a solvent; (ii) using a filtration device to remove solvent from the fluid and increase the concentration of 2d material in the fluid, wherein the fluid suitably includes a surfactant, which may be sodium cholate or sodium dodecylbenezenesulphonate and wherein the filtration device is suitably a cross-flow filtration device..
Thomas Swan & Co. Ltd

Method for forming perforated graphene with uniform aperture size

A method of forming a filter with uniform pore sizes includes synthesizing a moiety so as to form a plurality of like platelets having a precisely sized pore extending therethrough, distributing the plurality of like platelets about a membrane having apertures therethrough, and bonding the plurality of platelets around the apertures to form precisely sized pores through the membrane. A filtration membrane is also disclosed which provides a porous membrane having a plurality of apertures therethrough, and a plurality of platelets, wherein each platelet has a pore therethrough.
Lockheed Martin Corporation

A forming a graphene oxide-reduced graphene oxide junction

An apparatus including a first electrode including a substantially homogeneous mixture of graphene oxide and a proton conductor; a second electrode including reduced graphene oxide; and spaced-apart charge collectors for the respective first and second electrodes, wherein the first and second electrodes extend from their respective charge collectors towards one another to form a junction at an interface there between, and wherein the substantially homogeneous mixture of the first electrode is configured to be sufficiently hydrophobic to prevent intermixing of the homogeneous mixture with the reduced graphene oxide of the second electrode in proximity to one or both of the respective charge collectors to prevent short circuiting of the spaced-apart charge collectors.. .
Nokia Technologies Oy

Hierarchical composite structures based on graphene foam or graphene-like foam

The present invention relates to a hierarchical composite structure comprising an open cell graphene foam or graphene-like foam, wherein the graphene foam or graphene-like foam is coated with a conductive nanoporous spongy structure and wherein at least 10% v/v of the hollow of the pores of the graphene foam or graphene-like foam is filled with the conductive nanoporous spongy structure. The invention also relates to a process for preparing a hierarchical composite structure wherein a conductive nanoporous spongy structure is electrodeposited so as to coat the open-cell graphene foam or graphene-like foam and to partially fill the hollow of the pores of the graphene foam or graphene-like foam..
Repsol, S.a.

Vertically oriented graphene nanosheets on aluminum electrodes

Novel compositions of vertically oriented graphene nanosheets on aluminum electrodes are provided. These compositions are particularly useful for advanced electrolytic capacitors and fast response electric double layer capacitors.
College Of William And Mary

Surface applied sensors

In some embodiments, apparatus and methods are provided herein useful to monitor surfaces of vessels. In some embodiments, apparatus for monitoring surfaces of vessels and may include a substrate disposed proximate to the surface.
Vorbeck Materials Corp.

Methods for separating nucleic acids with graphene coated magnetic beads

Disclosed herein are methods for separating and identifying nucleic acids by utilizing carbon coated magnetic beads. The method teaches that multivalent cations promote binding of single stranded nucleic acids to the beads and that the single stranded nucleic acids can be released with the addition of chelating agents that bind the multivalent cations such as edta.
Life Magnetics, Inc.

Method for desulfurizing diesel fuel

The present disclosure provides a method for removing sulfur compounds from a fuel containing sulfur compounds. The method includes contacting the fuel with an adsorbent that comprises a carbonaceous material doped with nanoparticles of aluminum oxide to reduce the concentrations of the sulfur compounds.
King Fahd University Of Petroleum And Minerals

Graphene-containing epoxy adhesives

Epoxy adhesive comprising graphene sheets and at least one epoxy resin and articles made therefrom.. .
Vorbeck Materials Corp.

Graphite oxide entrainment in cement and asphalt composite

A method of producing dispersed of high quality graphene/graphite oxides in a powder matrix to then be reacted to form a composite. Where the powders have similar hydrophobicity and the graphene/graphite oxides has minimal surface oxidation or minimal epoxy group and where the powders are sonically mixed..
Gamor Inc.

Block copolymer, and preparing graphene using the same

The present invention relates to a method for preparing graphene using a novel block copolymer. The present invention has features that, by using the block copolymer to mediate graphene that is hydrophobic and a solvent of a feed solution that is hydrophilic, the exfoliation efficiency of graphene as well as the dispersion stability thereof can be increased during high-pressure homogenization..
Seoul National University R&db Foundation

Electrochemical producing single-layer or few-layer graphene sheets

A method of producing isolated graphene sheets from a layered graphite, comprising: (a) forming an alkali metal ion-intercalated graphite compound by an electrochemical intercalation which uses a liquid solution of an alkali metal salt dissolved in an organic solvent as both an electrolyte and an intercalate source, layered graphite material as an anode material, and a metal or graphite as a cathode material, and wherein a current is imposed upon a cathode and an anode at a current density for a duration of time sufficient for effecting the electrochemical intercalation of alkali metal ions into interlayer spacing; and (b) exfoliating and separating hexagonal carbon atomic interlayers (graphene planes) from the alkali metal ion-intercalated graphite compound using ultrasonication, thermal shock exposure, exposure to water solution, mechanical shearing treatment, or a combination thereof to produce isolated graphene sheets.. .

Lithium sulfide-graphene oxide composite material for li/s cells

The disclosure provides methods for producing li2s-graphene oxide (li2s-go) composite materials. The disclosure further provides for the li2s-go made therefrom, and the use of these materials in lithium-sulfur batteries..
The Regents Of The University Of California

Hydrophobic-oleophilic hollow fiber composite membrane and preparing method thereof

A hydrophobic-oleophilic and hollow fiber composite membrane includes hollow tubular braids and surface separation layers coated on the outer surfaces of the hollow tubular braids. Membrane-forming polymers in the surface separation layers are polyvinylidene fluoride, and all other components are hydrophobic ingredients, including graphene.
Tianjin Polytechnic University

Method for producing filter molded article

A method for producing a filter molded article having a graphene layer as a filtering material is characterized by including a step of forming a support 3 layer on a surface of a graphene 1 layer formed on initial substrates for a graphene 2 and 9, a step of forming water passage holes in the support 3 layer, a step of removing the initial substrates for a graphene 2 and 9, and a step of forming water passage holes by heating and holding the graphene 1 layer at a low temperature in the air containing oxygen of 160 to 250° c. For a predetermined time..

Articles and improved transfer of bodily fluids

A method is provided to accelerate transfer of released body fluids from a body through a treated textile fabric to promote dryness of a skin of the body, the method comprising providing a treated textile fabric facing the body fluids to be transferred, wherein the treated textile fabric includes a first surface and a second surface, wherein the first surface is positioned facing towards the body fluids and the second surface is positioned facing away from the body fluids, wherein the treated textile fabric is structured with a plurality of pores so to allow a passage of a liquid from the first surface to the second surface, and wherein the first surface is coated with a graphene material such that a permeation flux of the first surface is greater than a permeation flux of the second surface.. .
Tamicare Ltd.

Physical unclonable function

Apparatus, electronic device, system and method comprising a first element (102) configured to receive a first signal and convert the first signal to a second signal, a second element (104) configured to relay the second signal to a third element (106, 108), the third element (106, 108) being configured to convert the second signal to a third signal and to send the third signal; wherein the first element (102) is configured to convert the first signal to the second signal in such a way that the conversion is dependent on the physio-chemical structure of at least part of the first element (102). In some embodiments the first element comprises a photoacoustic sensor comprising at least one graphene layer, the second element comprises a mechanical wave transmission line, and the third element comprises carbon nanotube antennas..
Nokia Technologies Oy

Method of preparation a battery electrode by spray coating, an electrode and a battery made by method thereof

The present invention provides a method of preparing a battery electrode, comprising: (a) providing electroactive particles; (b) mixing the electroactive particles with a graphene-based material to form a composite; and (c) spray coating the composite onto a substrate to form the battery electrode; wherein the percentage of the electroactive particles to the graphene-based material is 40-95 wt %. Furthermore, the present invention provides a high performance battery electrode and lithium sulfur battery or lithium metal oxide-sulfur battery..
Academia Sinica

Tunneling diode using graphene-silicon quantum dot hybrid structure and manufacturing the same

Disclosed is a tunneling diode, which includes a graphene-silicon quantum dot hybrid structure, having improved performance and electrical characteristics by controlling the sizes of silicon quantum dots and the doping concentration of graphene. The ideal tunneling diode of the present disclosure may be utilized in diode-based optoelectronic devices..
University-industry Cooperation Group Of Kyung Hee University

Graphene transistor and ternary logic device using the same

Disclosed is a graphene transistor using graphene as a channel region and a logic device using the same. A doping metal layer is provided over a graphene channel of the graphene transistor.
Gwangju Institute Of Science And Technology

Electronic device, stacked structure, and manufacturing the same

A stacked structure includes: an insulating substrate; a graphene film that is formed on the insulating substrate; and a protective film that is formed on the graphene film and is made of a transition metal oxide, which is, for example, cr2o3. Thereby, at the time of transfer of the graphene, polymeric materials such as a resist are prevented from directly coming into contact with the graphene and nonessential carrier doping on the graphene caused by a polymeric residue of the resist is suppressed..
Fujitsu Limited

Ionic barristor

A schottky barrier device is provided herein that includes a tmd layer on a substrate, a graphene layer on the tmd layer, an electrolyte layer on the tmd layer, and a source gate contact on the electrolyte layer. A drain contact can be provided on the tmd layer and a source contact can be provided on the graphene layer.
Board Of Regents, The University Of Texas System

Method of forming graphene nanopattern, graphene-containing device, and manufacturing the graphene-containing device

Methods of forming a graphene nanopattern, graphene-containing devices, and methods of manufacturing the graphene-containing devices are provided. A method of forming the graphene nanopattern may include forming a graphene layer on a substrate, forming a block copolymer layer on the graphene layer and a region of the substrate exposed on at least one side of the graphene layer, forming a mask pattern from the block copolymer layer by removing one of a plurality of first region and a plurality of second regions of the block copolymer, and patterning the graphene layer in a nanoscale by using the mask pattern as an etching mask.
Samsung Electronics Co., Ltd.

Semiconductor device structure and forming the same

A semiconductor device structure and method for forming the same are provided. The semiconductor device structure includes a substrate and an interconnect structure formed over the substrate.
Taiwan Semiconductor Manufacturing Co., Ltd.

Dye-sensitized solar cell including polymer/graphene composite gel electrolyte and methods of preparing the same

Disclosed are a dye-sensitized solar cell including a polymer/graphene composite gel electrolyte and methods of preparing the dye-sensitized solar cell. .
Sogang University Research Foundation

Volatile organic compound-based diagnostic systems and methods

Provided are devices and methods to detect the presence of volatile organic compounds related to the presence of a disease state in a biological sample. The devices may include a detection moiety such as a polynucleotide in electronic communication with a semiconductor such as graphene or a carbon nanotube..
Monell Chemical Senses Center

Light-emitting diode filament lamp

A light-emitting diode filament lamp contains: a lamp cap, a transparent housing, at least one filament support, and at least one light-emitting diode (led) filament. The lamp cap is electrically connected with an external power supply so as to supply power to the at least one led filament, the transparent housing is hollow and includes an opening, and each filament support includes a first metal post electrically connected with a positive terminal and includes a second metal post electrically connected with a negative terminal.

Load-bearing composite panels, materials, products, and processes to make and use same

Load-bearing composite panels, materials, and products made by surrounding with a long fiber and/or fiber cloth reinforced polyurethane resin, an assembly containing one or more load-bearing members, graphene, a structural polyurethane/resin sandwich composite and/or spider silk protein fiber-cloth-continuous fibers. The composite structures can provide stronger, lighter-weight structural items such as vehicle floor and body panels, bullet-proof anti-ballistic panel products, vehicle bullet-proof anti-ballistic body panel structures and floors, bullet-proof vests, vehicle chassis, monocoque chassis, motor homes chassis-bodies, fuselage floors and frames for aircraft and/or uav's, bicycle and motorcycle frames, wind turbine blades frames and structures, ship or boat haul body structures, shipment containers, pre-fabricated walls of buildings, train structure body or floor panels, solar panel supports, battery housings, mobile home walls, roof modules, truck beds, and truck trailer floors.

Polymer comprising repeating units consisting of a substituted pyrrole ring and products obtained by combining said polymers with carbon allotropes

The present invention relates to a polymer comprising repeating units consisting of a substituted pyrrole ring. In particular, the repeating units consist of substituted pyrrole containing polar groups capable of interacting with carbon allotropes such as carbon nanotubes, graphene or nanographites, in order to improve the chemical-physical characteristics of the allotropes mainly by increasing their dispersibility and stability in liquid media and in polymer matrices.
Politecnico Di Milano

Large scale production of oxidized graphene

Embodiments described herein relate generally to the large scale production of functionalized graphene. In some embodiments, a method for producing functionalized graphene includes combining a crystalline graphite with a first electrolyte solution that includes at least one of a metal hydroxide salt, an oxidizer, and a surfactant.
Group Nanoxplore Inc.

Chemical-free production of graphene-reinforced inorganic matrix composites

Provided is a simple, fast, scalable, and environmentally benign method of producing a graphene-reinforced inorganic matrix composite directly from a graphitic material, the method comprising: (a) mixing multiple particles of a graphitic material and multiple particles of an inorganic solid carrier material to form a mixture in an impacting chamber of an energy impacting apparatus; (b) operating the energy impacting apparatus with a frequency and an intensity for a length of time sufficient for peeling off graphene sheets from the graphitic material and transferring the graphene sheets to surfaces of solid inorganic carrier material particles to produce graphene coated or graphene-embedded inorganic particles inside the impacting chamber; and (c) forming graphene-coated or graphene-embedded inorganic particles into the graphene-reinforced inorganic matrix composite. Also provided is a mass of the graphene-coated or graphene-embedded inorganic particles produced by this method..

Solid phase extraction column, preparation method therefor, and pre-processing chemical sample based on solid phase extraction column

A solid phase extraction column, preparation method therefor, and pre-processing method of chemical sample based on solid phase extraction column. The solid phase extraction column includes a separation column, and a solid phase extraction agent tilled within the separation column.
Carbon Nano Engineering Systems Corporation

System and forming electrical interconnects

A method of forming a high-conductivity electrical interconnect on a substrate may include forming a graphene film with a plurality of graphene members, depositing a metal over the graphene film, and providing a metallic overlay that connects the plurality of graphene members together through the depositing operation to form a covered graphene film.. .
The Boeing Company

Lithium-sulfur accumulator

A lithium-sulfur battery which includes an electrolyte containing lithium-ions, an anode and a cathode containing sulfur. The lithium-sulfur battery also contains a surface layer which is arranged between the anode and the cathode.
Bayerische Motoren Werke Aktiengesellschaft

Ordered nano-porous carbon coating on silicon or silicon/graphene composites as lithium ion battery anode materials

The present invention provides high specific capacity composite anode materials of silicon and carbon with stable charge/discharge cycling performance, and methods of producing them, where the composite anode materials comprise a core of silicon particles or silicon/graphene hybrid, and a layer of nano-ordered porous carbon coated on its surface. The coated carbon layer was produced by pyrolysis of self-assembled composite of a co-block polymer and a phenolic resin which was prepared from formaldehyde and phenolic compounds with either an acid or base as a catalyst..

Electrophoretic deposition of an electrode for a lithium-based battery

A method for manufacturing an electrode for a lithium-based battery by electrophoretic deposition is provided. The method includes: mixing particles with graphene oxide and a binder in a solution, the particles including a material selected from silicon, silicon oxide, silicon alloys, tin, tin oxide, sulfur, lithium manganese oxide, lithium cobalt oxide, lithium nickel oxide, lithium nickel manganese oxide, and lithium nickel manganese cobalt oxide.
Gm Global Technology Operations Llc

Method of preparing graphene-based thin-film laminate and graphene-based thin-film laminate prepared using the same

Provided are a method of preparing a graphene-based thin-film laminate and the graphene-based thin-film laminate prepared by using the method. The method may include repeating following operations 60 times or less, the cycle including: (a) to (d) processes described above, a graphene-based thin-film laminate prepared using the same, and an electrode and electronic device including the graphene-based thin-film laminate..
Hanwha Techwin Co., Ltd.

Graphene-based laminate and preparing the same

Provided are a graphene-based laminate and a method of preparing the graphene-based laminate. The graphene-based laminate may include a substrate; a graphene layer formed on at least one surface of the substrate; and an inorganic layer formed on the graphene layer and including a fluorine-containing lithium compound..
Hanwha Techwin Co., Ltd.

Aligned graphene-carbon nanotube porous carbon composite

Embodiments of the present disclosure are directed to carbon-containing composites which are suitable for use as electrodes in electrochemical systems. The composites are formed from a scaffold of graphene and carbon nanotubes.
The Arizona Board Of Regents On Behalf Of The University Of Arizona

Supercapacitor electrode having highly oriented and closely packed graphene sheets and production process

Provided is a process for producing an electrolyte-impregnated laminar graphene structure for use as a supercapacitor electrode. The process comprises (a) preparing a graphene dispersion having multiple isolated graphene sheets dispersed in an electrolyte; and (b) subjecting the graphene dispersion to a forced assembly procedure, forcing the multiple graphene sheets to assemble into an electrolyte-impregnated laminar graphene structure, wherein the multiple graphene sheets are alternately spaced by thin electrolyte layers, less than 5 nm in thickness, and the graphene sheets are substantially aligned along a desired direction, and wherein the laminar structure has a physical density from 0.5 to 1.7 g/cm3 and a specific surface area from 50 to 3,300 m2/g, when measured in a dried state of the laminar structure with the electrolyte removed.

Order o(1) algorithm for first-principles calculation of transient current through open quantum systems

A fast algorithm is used to study the transient behavior due to the step-like pulse. This algorithm consists of two parts: the algorithm i reduces the computational complexity to t0n3 for large systems as long as t<n; the algorithm ii employs the fast multipole technique and achieves scaling t0n3whenever t<n2 beyond which it becomes t log2 n for even longer time.
The University Of Hong Kong

Graphene fet devices, systems, and methods of using the same for sequencing nucleic acids

Provided herein are devices, systems, and methods of employing the same for the performance of bioinformatics analysis. The apparatuses and methods of the disclosure are directed in part to large scale graphene fet sensors, arrays, and integrated circuits employing the same for analyte measurements.
Agilome, Inc.

Graphene oxide-nanodiamond composite, manufacturing method thereof, and nanofluid including the same

Disclosed herein is a composite comprising a graphene oxide and a nanodiamond that is chemically bonded on a surface of the graphene oxide.. .
Hyundai Motor Company

Graphene/polymer nanocomposites containing surface modified graphene

A method for enhancing an interaction between graphene nanoparticles and a poly(styrene-co-methylmethacrylate), including modifying graphene with nitric acid to form graphene nanoparticles surface modified with one or more oxygen functionalities, melt blending the poly(styrene-co-methylmethacrylate) and the modified graphene nanoparticles to obtain a nanocomposite, and exposing the nanocomposite to microwave irradiation to form defects in the graphene nanoparticles. A blend composition, including graphene nanoparticles and a poly(styrene-co-methylmethacrylate), where the graphene nanoparticles are dispersed in the poly(styrene-co-methylmethacrylate), and the graphene nanoparticles are surface modified with oxygen functionalities..
King Fahd Universityof Petroleum And Minerals

Polyethylene terephthalate-graphene nanocomposites

A nanocomposite material comprises polyethylene terephthalate (pet) as a base polymer and a nanoparticle that increases the strength of the base polymer.. .
The Board Of Regents For Oklahoma State University

Graphene-reinforced polymer matrix composites

A graphene-reinforced polymer matrix composite comprising an essentially uniform distribution in a thermoplastic polymer of about 10% to about 50% of total composite weight of particles selected from graphite microp articles, single-layer graphene nanoparticles, multilayer graphene nanoparticles, and combinations thereof, where at least 50 wt % of the particles consist of single- and/or multi-layer graphene nanoparticles less than 50 nanometers thick along a c-axis direction. The graphene-reinforced polymer matrix is prepared by a method comprising (a) distributing graphite microparticles into a molten thermoplastic polymer phase comprising one or more matrix polymers; and (b) applying a succession of shear strain events to the molten polymer phase so that the matrix polymers exfoliate the graphite successively with each event until at least 50% of the graphite is exfoliated to form a distribution in the molten polymer phase of single- and multi-layer graphene nanoparticles less than 50 nanometers thick along a c-axis direction..
Rutgers, The State University Of New Jersey

Method of covalently bonding a polymer/surface modified graphene nanocomposite

A method for forming a blend including graphene nanoparticles and a poly(styrene-co-methylmethacrylate), where the method includes melt mixing the poly(styrene-co-methylmethacrylate) and the graphene nanoparticles to obtain a nanocomposite and exposing the nanocomposite to microwave irradiation to bond the methyl methacrylate copolymer to the graphene nanoparticles, in which a content of the graphene nanoparticles is from 0.05 to 2 wt % based on the nanocomposites. A blend composition, including graphene nanoparticles and a poly(styrene-co-methylmethacrylate), where the graphene nanoparticles are dispersed in the poly(styrene-co-methylmethacrylate), the graphene nanoparticles are modified with microwave induced defects, and the free radicals of poly(styrene-co-methylmethacrylate) is bonded to the graphene nanoparticles at the defects..
King Fahd University Of Petroleum And Minerals

Nitrate reduction method, nitrate reduction catalyst, nitrate reduction electrode, fuel cell, and water treatment apparatus

A nitrate reduction method includes the step of reducing at least one type selected from a group of nitrates and nitrites at an active site included in a defect of graphene in a reduction reaction, wherein the graphene is a reduced product of graphene oxide, and the defect of the graphene is derived from a defect of the graphene oxide.. .
Japan Science And Technology Agency

Transfer two-dimensional film

A two-dimensional film (such as graphene) is formed on a surface of a growth substrate. A first surface of the two-dimensional film adheres to the growth substrate, and a second surface of the two-dimensional film is then coated with a conforming carrier layer comprising ethylene vinyl acetate.
Massachusetts Institute Of Technology

System and mass production of graphene platelets in arc plasma

A system and method for producing graphene includes a heating block, substrate, motor and collection device. The substrate is arranged about the heating block and is configured to receive heat from the heating block.
The George Washington University

Partially oxidized graphene and preparing same

The present invention relates to a partially oxidized graphene and a method for preparing the same. Since the partially oxidized graphene is prepared by subjecting the partially oxidized graphite to a high pressure homogenization, the exfoliation efficiency is excellent, the inherent characteristics of graphene are maintained even without using a reduction step after exfoliation, and the dispersibility thereof in organic solvents is excellent, and thus the invention can be applied to various fields..
Lg Chem, Ltd.

Vertical carbon nanotube and lithium ion battery chemistries, articles, architectures and manufacture

Features for rechargeable lithium ion batteries, the batteries optionally employing vertically aligned carbon nanotube scaffolding, are described. Methods of manufacture and a solid polymer electrolyte are described for 3-dimensional battery architectures using the vertically aligned carbon nanotubes.
California Institute Of Technology

Oled device, packaging method thereof, and packaging apparatus

The present invention provides an oled device, and a packaging method thereof and a packaging apparatus. The packaging method is for packaging an oled device formed on a base substrate, and includes: separating a graphene thin film formed on a copper foil from the copper foil; and packaging the oled device using the graphene thin film.
Ordos Yuansheng Optoelectronics Co., Ltd.

Solar cell with graphene-silicon quantum dot hybrid structure and manufacturing the same

Disclosed are a solar cell and a method of manufacturing the same. The solar cell with a graphene-silicon quantum dot hybrid structure according to an embodiment of the present disclosure includes a hybrid structure including a silicon quantum dot layer, in which a silicon oxide layer includes a plurality of silicon quantum dots; a doped graphene layer formed on the silicon quantum dot layer, and an encapsulation layer formed on the doped graphene layer; and electrodes formed on upper and lower parts of the hybrid structure..
University-industry Cooperation Group Of Kyung Hee University

Graphene frameworks for supercapacitors

The present disclosure provides supercapacitors that may avoid shortcomings of current energy storage technology. Provided herein are materials and fabrication processes of such supercapacitors.
The Regents Of The University Of California

Process for fabric of continuous graphitic fiber yarns

Multi-functional and high-performing fabric comprising a first layer of yarns woven to form the fabric wherein the yarns comprise at least one unitary graphene-based continuous graphitic fiber comprising at least 90% by weight of graphene planes that are chemically bonded with one another having an inter-planar spacing d002 from 0.3354 nm to 0.4 nm as determined by x-ray diffraction and an oxygen content less than 5% by weight. A majority of the graphene planes in such a continuous graphitic fiber are parallel to one another and parallel to a fiber axis direction.
Nanotek Instruments, Inc.

Method for producing graphene with controlled number of layers, and manufacturing electronic device using same

Disclosed is a method of producing graphene, which includes bringing a metal catalyst into contact with hydrogen gas (step a), bringing the metal catalyst in step a into contact with at least one selected from among a hydrocarbon gas, nitrogen gas, and an inert gas (step b), and forming graphene on the metal catalyst by bringing the metal catalyst in step b into contact with hydrogen gas and a hydrocarbon gas (step c), whereby the number of layers of graphene can be variously controlled as needed, regardless of the initial surface roughness of a metal catalyst layer, and also, the time required to form graphene can be shortened, thus reducing processing costs.. .
Center For Advanced Soft Electronics

Method for transferring a large-area graphene sheet

A method of transferring a graphene sheet comprising one or more layers of graphene formed on a metal film, such as a copper film, coating a surface of a metal or alloy substrate onto a target substrate. The method includes fixedly contacting the graphene sheet with a contacting surface of the target substrate by applying substantially uniform pressure and heat on a layered assembly.
King Abdulaziz University

Graphene-based ink compositions for three-dimensional printing applications

Electrically conducting, biocompatible, biodegradable tissue growth comprising graphene flakes in a polymeric matrix are provided.. .
Northwestern University

Scalable silicon anodes and the role of parylene films in improving electrode performance characteristics in energy storage systems

A lithium-based energy storage system includes an electrolyte and an electrode. The electrode has a conformal coating of parylene.
Rensselaer Polytechnic Institute

Production process for alkali metal-sulfur batteries having high volumetric and gravimetric energy densities

Process for producing an alkali metal-sulfur battery, comprising: (a) preparing a first conductive porous structure; (b) preparing a second conductive porous structure; (c) injecting or impregnating a first suspension into pores of the first conductive porous structure to form an anode electrode, wherein the first suspension contains an anode active material, an optional conductive additive, and a first electrolyte; (d) injecting or impregnating a second suspension into pores of the second conductive porous structure to form a cathode electrode, wherein the second suspension contains a cathode active material (selected from sulfur, lithium polysulfide, sodium polysulfide, sulfur-polymer composite, organo-sulfide, sulfur-carbon composite, sulfur-graphene composite, or a combination thereof), an optional conductive additive, and a second electrolyte; and (e) assembling the anode electrode, a separator, and a cathode electrode into the battery.. .

Alkali metal-sulfur batteries having high volumetric and gravimetric energy densities

Provided is an alkali metal-sulfur battery, comprising: (a) an anode; (b) a cathode having (i) a cathode active material slurry comprising a cathode active material dispersed in an electrolyte and (ii) a conductive porous structure acting as a 3d cathode current collector having at least 70% by volume of pores and wherein cathode active material slurry is disposed in pores of the conductive porous structure, wherein the cathode active material is selected from sulfur, lithium polysulfide, sodium polysulfide, sulfur-polymer composite, sulfur-carbon composite, sulfur-graphene composite, or a combination thereof; and (c) a separator disposed between the anode and the cathode; wherein the cathode thickness-to-cathode current collector thickness ratio is from 0.8/1 to 1/0.8, and/or the cathode active material constitutes an electrode active material loading greater than 15 mg/cm2, and the 3d porous cathode current collector has a thickness no less than 200 μm (preferably thicker than 500 μm).. .

Nanocomposite films and methods of preparation thereof

Nanocomposite films comprising carbon nanotubes dispersed throughout a polymer matrix and further comprising at least two surfaces with differing amounts of carbon nanotubes and differing electrical resistivity values are provided. Nanocomposite films comprising a polymer layer, a conductive nanofiller layer, and a polysaccharide layer having antistatic properties are provided.
King Fahd University Of Petroleum And Minerals

Pellicle and manufacturing the same

A method for manufacturing a pellicle includes: providing a supporting substrate; forming an oxide layer over the supporting substrate; forming a metal layer over the oxide layer; forming a graphene layer over the metal layer; and removing at least a portion of the supporting substrate and the oxide layer. An associated method includes: providing a supporting substrate; forming a first silicon carbide (sic) layer or a diamond layer over the supporting substrate; forming a graphene layer over the sic layer or the diamond layer; and removing at least a portion of the supporting substrate and the first silicon carbide (sic) layer or the diamond layer; wherein the pellicle is at least partially transparent to extreme ultraviolet (euv) radiation.
Taiwan Semiconductor Manufacturing Company Ltd.

Sliding engine component

A sliding engine component may include a plastic polymer-based composite layer on a substrate. The composite layer may include a matrix of plastic polymer-based material, and functionalised graphene nano platelets distributed throughout the matrix.
Mahle Engine Systems Uk Limited

Method for forming a graphene based material and a product

The invention relates to a method for forming graphene based material. According to the invention graphene oxide is functionalized via thiol-ene click chemistry so that the graphene oxide is prepared and dispersed in solvents, the graphene is reacted with thiol containing compound via thiol-ene click reaction between thiol group and double bond of aromatic rings in graphene oxide by one-step reaction, and the functionalized graphene oxide is formed.
Aalto University Foundation

Method for producing graphene with a controllable number of layers

A method for producing pristine graphene of controllable thickness including monolayer, bilayer and multilayer graphene via microwave irradiation assisted intercalation of graphite with dicarboxylic acids of various molecular chain lengths and subsequent exfoliation is disclosed. The average thickness of the graphene and the number of layers in the graphene produced by the method can be controlled by the molecular chain length of the dicarboxylic acid used for intercalation..
King Abdulaziz University

A synthesis of silica coated graphene functional hybrid material

A process for synthesis of silica coated graphene hybrid material comprising the steps of treating graphene oxide with ammonium ions to provide ammonium-activated graphene oxide; treating the ammonium-activated graphene oxide with a solution comprising silica precursors; and silane coupling agents that comprise functional groups, to provide self-assembly of silica nanoparticles on the surface of the ammonium-activated graphene oxide and covalent bonding between the nanoparticles and the surface to provide silica coated graphene oxide; and grafting of the functional groups on the surface of the silica coated graphene oxide to provide functionalized silica coated graphene oxide; and reducing the functionalized silica coated graphene oxide to provide functionalized silica coated graphene. Silica coated graphene hybrid material obtainable by this process..
Sht Smart High-tech Abö





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