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Graphene patents

      

This page is updated frequently with new Graphene-related patent applications.

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new patent Graphene compound, forming graphene compound, and power storage device
A material that can be used in a wide temperature range and a manufacturing method thereof are provided. A graphene compound has a substituted or unsubstituted chain group.
Semiconductor Energy Laboratory Co., Ltd.


new patent Nonvolatile resistive switching memory device and manufacturing method thereof
A nonvolatile resistive switching memory includes an inert metal electrode, a resistive switching functional layer, and an easily oxidizable metal electrode. A graphene intercalation layer with nanopores, interposed between the easily oxidizable metal electrode and the resistive switching functional layer, is capable of controlling the metal ions, which are formed by the oxidation of the easily oxidizable metal electrode during the programming of the device, and only enter into the resistive switching functional layer through the position of the nanopores.
Institute Of Microelectronics, Chinese Academy Of Sciences


new patent Graphene-based solid state devices capable of emitting electromagnetic radiation and improvements thereof
Described herein are solid-state devices based on graphene in a field effect transistor (fet) structure that emits high frequency electromagnetic (em) radiation using one or more dc electric fields and periodic magnetic arrays or periodic nanostructures. A number of devices are described that are capable of generating and emitting electromagnetic radiation..
P-brane, Llc


new patent Electrochemical producing graphene-based supercapacitor electrode from coke or coal
A method of producing graphene sheets from coke or coal powder, comprising: (a) forming an intercalated coke or coal compound by electrochemical intercalation conducted in an intercalation reactor, which contains (i) a liquid solution electrolyte comprising an intercalating agent; (ii) a working electrode that contains the powder in ionic contact with the liquid electrolyte, wherein the coke or coal powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, lignite coal, or natural coal mineral powder; and (iii) a counter electrode in ionic contact with the electrolyte, and wherein a current is imposed upon the working electrode and the counter electrode for effecting electrochemical intercalation of the intercalating agent into the powder; and (b) exfoliating and separating graphene planes from the intercalated coke or coal compound using an ultrasonication, thermal shock exposure, mechanical shearing treatment, or a combination thereof to produce isolated graphene sheets.. .
Nanotek Instuments, Inc.


new patent Supercritical fluid production of graphene-based supercapacitor electrode from coke or coal
Provided is a process for producing a graphene-based supercapacitor electrode from a supply of coke or coal powder, comprising: (a) exposing this powder to a supercritical fluid for a period of time in a pressure vessel to enable penetration of the supercritical fluid into internal structure of the coke or coal; wherein the powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, or a combination thereof; (b) rapidly depressurizing the supercritical fluid at a fluid release rate sufficient for effecting exfoliation and separation of the coke or coal powder to produce isolated graphene sheets, which are dispersed in a liquid medium to produce a graphene suspension; and (c) shaping and drying the graphene suspension to form the supercapacitor electrode having a specific surface area greater than 200 m2/g.. .
Nanotek Instruments, Inc.


new patent Humic acid-based supercapacitors
A supercapacitor electrode comprising a mixture of graphene sheets and humic acid, wherein humic acid occupies 0.1% to 99% by weight of the mixture and the graphene sheets are selected from a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 5% by weight of non-carbon elements wherein said non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, or a combination thereof; and wherein said mixture has a specific surface area greater than 500 m2/g.. .
Nanotek Instruments, Inc.


new patent Production of graphene-based supercapacitor electrode from coke or coal using direct ultrasonication
Provided is a method of producing graphene-based supercapacitor electrode from a supply of coke or coal powder. The method comprises: (a) dispersing particles of the coke or coal powder in a liquid medium containing therein an optional surfactant or dispersing agent to produce a suspension or slurry, wherein the coke or coal powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, or a combination thereof; (b) exposing the suspension or slurry to ultrasonication at an energy level for a sufficient length of time to produce a graphene suspension having isolated graphene sheets dispersed in the liquid medium; and (c) shaping and drying the graphene suspension into the supercapacitor electrode in a film, filament, rod, or tube form that is porous and has a specific surface area greater than 200 m2/g..
Nanotek Instruments, Inc.


new patent Methods of analyzing carbon nanostructures, methods of preparation of analytes from carbon nanostructures, and systems for analyzing carbon nanostructures
Provided herein is a method determining the concentration of impurities in a carbon material, comprising: mixing a flux and a carbon material to form a mixture, wherein the carbon material is selected from the group consisting of graphene, carbon nanotubes, fullerene, carbon onions, graphite, carbon fibers, and a combination thereof; heating the mixture using microwave energy to form fused materials; dissolution of the fused materials in an acid mixture; and measuring the concentration of one or more impurities.. .
King Abdullah University Of Science And Technology


new patent Process for producing monolithic film of integrated highly oriented halogenated graphene sheets or molecules
A process for producing an integrated layer (10 nm to 500 μm) of highly oriented halogenated graphene sheets, comprising: (a) preparing a graphene oxide (go) dispersion having go sheets dispersed in a fluid medium; (b) dispensing and depositing a layer of go dispersion onto a surface of a supporting substrate under a shear stress condition that induces orientation of go sheets to form a wet layer of go on the supporting substrate; (c) introducing a halogenating agent into the wet layer of graphene oxide and effecting a chemical reaction between the halogenating agent and go sheets to form a wet layer of halogenated graphene, c6zxoy, wherein z is a halogen element selected from f, cl, br, i, or a combination thereof, x=0.01 to 6.0, y=0 to 5.0, and x+y≦6.0; and (d) removing the fluid medium.. .
Nanotek Instruments, Inc.


new patent Supercritical fluid process for producing graphene from coke or coal
Provided is a process for producing isolated graphene sheets from a supply of coke or coal powder containing therein domains of hexagonal carbon atoms and/or hexagonal carbon atomic interlayers. The process comprises: (a) subjecting the supply of coke or coal powder to a supercritical fluid at a first temperature and a first pressure for a first period of time in a pressure vessel and then (b) rapidly depressurizing the supercritical fluid at a fluid release rate sufficient for effecting exfoliation and separation of the coke or coal powder to produce isolated graphene sheets, wherein the coke or coal powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, or a combination thereof..
Nanotek Instruments, Inc.


new patent

Thin film diffusion barrier

A rubber substrate has a material diffusion barrier, and a method produces the same. In an embodiment, a method for producing a material diffusion barrier on a rubber substrate include exposing the rubber substrate to a cationic solution to produce a cationic layer on the rubber substrate.
The Texas A&m University System

Method of fabricating graphene-based/algal biofilm electrode for application in a biophotovoltaic device

A method of preparing an electrode for use in a biophotovoltaic device, comprising the steps of: coating a self-assembled film on a substrate using langmuir-blodgett technique; and immersing the coated substrate into an microalgae culture, followed by incubating thereof to grow microalgae thereon hence obtaining a biofilm, characterised in that the self-assembled film is derived from graphene.. .
University Of Malaya

Method for the preparation of anodes for lithium batteries

A method for preparing an electrode for use in lithium batteries and the resulting electrodes are described the method comprises coating a slurry of silicon, sulfur doped graphene and polyacrylonitrile on a current collector followed by sluggish heat treatment.. .

Optimized electrode design for graphene based anodes

A negative electrode of a lithium ion electrochemical cell, the negative electrode including an active electrode material that includes a first component and a second component. The first component may include graphene, silicon, or a combination thereof.
Sinode Systems, Inc.

Graphene structure

A graphene structure of an embodiment includes multilayer graphene laminated with graphene sheets, and a first interlayer material being present between the graphene sheets of the multilayer graphene and containing a multimer of molybdenum oxide.. .
Kabushiki Kaisha Toshiba

Manufacturing coa substrate

The disclosure provides a manufacturing method for coa substrate: utilizing pedot, pprodot or pedot derivatives with or without doping with graphene, or pprodot derivatives replaces traditional ito to be conductive materials of pixel electrodes; quantum dots can be modified by prodot derivatives or edot derivatives which including carboxyl group, and quantum dot color filters of red filter layers, green filter layer and blue filters layers comprised on the tft substrate are formed by the method of electric chemical deposition based on a property of the aforementioned two being able to polymerize under influences of electric field and pixel electrode patterns on the tft substrate. Therefore, zero waste can be achieved in quantum dots, a usage of quantum dots can be decreased, indium usage can be decreased, researching and development cost can be reduced, and the circumstances can be protected, furthermore, the qds color film having the better bonding strength bonds the counter electrode layer through chemical bond, and avoids adverse results as a peel is caused by insufficient bonding strength between photoresist and substrate..
Shenzhen China Star Optoelectronics Technology Co. Ltd.

High-performance solid-state supercapacitors and microsupercapacitors derived from printable graphene inks

Solid-state supercapacitors and microsupercapacitors comprising printed graphene electrodes and related methods of preparation.. .

Method for removing thiophene from diesel fuel with a graphene oxide adsorbent

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

Single crystal graphene or polycrystalline graphene matrix composite containing carbon-based fillers

A process for producing a unitary graphene matrix composite, the process comprising: (a) preparing a graphene oxide gel having graphene oxide molecules dispersed in a fluid medium, wherein the graphene oxide gel is optically transparent or translucent; (b) mixing a carbon or graphite filler phase in said graphene oxide gel to form a slurry; (c) dispensing said slurry onto a surface of a supporting substrate or a cavity of a molding tool; (d) partially or completely removing the fluid medium from the slurry to form a composite precursor; and (e) heat-treating the composite precursor to form the unitary graphene composite at a temperature higher than 100° c. This composite exhibits a combination of exceptional thermal conductivity, electrical conductivity, mechanical strength, surface hardness, and scratch resistance..
Nanotek Instruments, Inc.

Enhanced conductivity, adhesion and environmental stability of printed graphene inks with nitrocellulose

graphene ink compositions comprising nitrocellulose and related methods of use comprising either thermal or photonic annealing.. .
Northwestern University

Capsules having surfactant tethered outer shells and methods for making same

Microcapsules are disclosed that have a core composition encapsulated within a polymer wall, and an inorganic shell connected to an exterior surface of the polymer wall by a surfactant. The inorganic shell has a cation attracted to the surfactant and an anion or anion equivalent chemically bonded to the cation to form the shell or has the metal portion of a metal-containing compound attracted to the surfactant to form the shell.
Microtek Laboratories Inc.

Graphene based growing medium and method

The present invention provides for a growing medium having a mix of soil, graphene, and/or graphene oxide. In at least one example, soil is combined with single or few layer graphene.

Nanoporous graphene nanowires and producing methods and applications of same

A material of porous graphene nanowires with a pore-rich structure is formed by synthesis of catalyst nanowires for porous graphene nanowires, chemical vapor deposition of a carbon source on the catalysts to grow graphene, removal of residual catalyst, and formation of the porous graphene nanowires. The porous graphene nanowires can be used as an electrochemical energy storage material, carriers of catalysts, a conductive material, an adsorption material, a desorption material, or the like..
Hk Graphene Technology Corporation

Apparatus and preparing graphene by exfoliation of graphite using a pulsed or cavitating waterjet

A graphene preparing apparatus for exfoliating graphite includes a high-pressure water pump for generating a high-pressure flow of water, a waterjet nozzle for receiving the water and for generating a pulsed or cavitating waterjet, a graphite supply vessel having a supply duct for supplying graphite powder, an exfoliation chamber that has a first inlet for receiving the waterjet and a second inlet for receiving the graphite powder, an outlet through which a graphite slurry is expelled from the exfoliation chamber, a filtering unit downstream of the exfoliation chamber for separating graphene from the slurry and a graphene collection tank for collecting the graphene.. .
Vln Advanced Technologies Inc.

Titanium diboride nanotubes for trapping gases in lithium ion batteries

A lithium ion battery includes an electrolyte maintained in a separator, the separator having two sides; a negative electrode of lithium titanate (li4ti5o12) disposed on one side of the separator; a negative current collector associated with the negative electrode; a positive electrode disposed on an opposite side of the separator; and a positive current collector associated with the positive electrode. The lithium ion battery further includes gas traps to trap gases in the battery, wherein the gas traps include titanium diboride (tib2) nanotubes.
Gm Global Technology Operations Llc

Carbon-coated active particles and processes for their preparation

A process for the preparation of carbon-coated particles, where the particles include an electrochemically active material. The process includes the steps of emulsion polymerization, drying and thermally treating the polymer to obtain a nano-layer of carbon on the particles, where the carbon layer includes fibers and nitrogen-containing polyaromatics have a graphene-like structure.
Sony Corporation

Method for fabricating nanopillar solar cell using graphene

A method of manufacturing a semiconductor device includes providing a substrate structure. The substrate structure includes a conductive layer and a plurality of nanopillars spaced apart from each other overlying the conductive layer.
Semiconductor Manufacturing International (beijing) Corporation

Electromagnetic wave detector and electromagnetic wave detector array

An electromagnetic wave detector includes: a substrate; an insulating layer provided on the substrate; a graphene layer provided on the insulating layer; a pair of electrodes provided on the insulating layer, with the graphene layer being interposed therebetween; and buffer layers interposed between the graphene layer and the electrodes to separate the graphene layer and the electrodes from each other. The electromagnetic wave detector array includes arrayed electromagnetic wave detectors that are the same as or different from each other..
Mitsubishi Electric Corporation

Method and device for finfet with graphene nanoribbon

A method for forming a semiconductor device includes providing a substrate structure, which has a semiconductor substrate and a semiconductor fin on the substrate. The method also includes forming a catalytic material layer overlying the semiconductor fins, and forming an isolation region covering the catalytic material layer in a lower portion of the semiconductor fins.
Semiconductor Manufacturing International (beijing) Corporation

Method for capping cu layer using graphene in semiconductor

An interconnect structure includes a substrate, a dielectric layer on the substrate, a metal interconnect layer in the dielectric layer and in contact with the substrate, the metal interconnect layer having an upper surface flush with an upper surface of the dielectric layer, and a graphene layer on the metal interconnect layer. The graphene layer insulates a metal from air and prevents the metal from being oxidized by oxygen in the air, thereby increasing the queue time for the cmp process and the device reliability..
Semiconductor Manufacturing International (beijing) Corporation

Flexible sensor

Systems, apparatuses, and/or methods to manufacture and/or implement a sensor film, a composite electrode, and/or a computing device such as a flexible device. The sensor film may include a random network of metal lines and graphene interconnecting the metal lines.

Thin film plasmonic optical modulator

A plasmon-based optical modulator comprises a substrate, a layer of high reflectivity material disposed over the substrate, a relatively thin dielectric layer disposed over a top major surface of the layer of high reflectivity material and a plurality of graphene strips disposed in parallel across a top major surface of the relatively thin dielectric layer, each graphene strip exhibiting a predetermined width w, with adjacent strips separated by a predetermined spacing s. A first electrical contact is coupled to the plurality of graphene strips and a second electrical contact is coupled to the layer of high reflectivity material, where the values of w, s, and voltage applied between the first and second electrical contacts determines a resonant wavelength of the plasmon-based optical modulator, with changes in the applied voltage changing between absorption and non-absorption of an applied optical input signal..
Cornell University

Growth graphene

The present invention provides a growth method of grapheme, which at least comprises the following steps: s1: providing an insulating substrate, placing the insulating substrate in a growth chamber; s2: heating the insulating substrate to a preset temperature, and introducing a gas containing catalytic element into the growth chamber; s3: feeding carbon source into the growth chamber and growing a graphene thin film on the insulating substrate. The present invention adopts a catalytic manner of introducing catalytic element, and rapid grows a high quality graphene on the insulating substrate, which avoids the transition process of the graphene, enables to improve the production yield of the graphene, reduces the growth cost of the graphene, and thus the mass production can be facilitated.
Shanghai Institute Of Microsystem And Information Technology, Chinese Academy Of Sciences

Spacecraft structures incorporating graphene and operation thereof

Functional components of spacecraft structures can be subject to detrimental impacts by energetic particles produced from an electric propulsion system. A graphene coating applied to a functional component can maintain electrical conductivity upon a surface of the functional component, thereby allowing charge dissipation to take place, while also resisting sputtering erosion resulting from impacts of the energetic particles.
Lockheed Martin Corporation

Structural element with heater for a vehicle, manufacturing method and operating method

A structural element of a means of transport comprising a resistive heater for defrosting operations, wherein the resistor has conduction terminals coupled to respective terminals of a voltage generator adapted to cause a current flux through the resistor. The resistor includes one or more conductive paths of partially reduced graphene oxide or partially oxidized graphene configured to generate, when travelled by the current flux, heat by joule effect..
Leonardo S.p.a.

Graphene membrane film for solvent purification, producing same, and solvent purification system using same

Described embodiments include a graphene membrane film for solvent purification and related method, and a solvent purification system using same. The graphene membrane film for solvent purification is formed having a plurality of stacked graphene plate-shaped flakes, and at least one pair of the plurality of stacked graphene plate-shaped flakes comprises a physical bond or a chemical bond connecting layers.
Soulbrain Co., Ltd.

2d material super capacitors

Devices and methods are described relating to capacitor energy storage devices that are small in size and have a high energy stored to volume ratio. The capacitor devices include 2d material electrodes.
Synopsys, Inc.

Liquid crystal display apparatus

A liquid crystal display apparatus is provided. The liquid crystal display apparatus includes a graphene led backlight source, a first polarizing film, a first substrate, a liquid crystal layer, a second substrate and a second polarizing film.
Shenzhen China Star Optoelectronics Technology Co. Ltd.

Electrochemical production of graphene sheets from coke or coal

A method of producing graphene sheets from coke or coal powder, comprising: (a) forming an intercalated coke or coal compound by electrochemical intercalation conducted in an intercalation reactor, which contains (i) a liquid solution electrolyte comprising an intercalating agent; (ii) a working electrode that contains the powder in ionic contact with the liquid electrolyte, wherein the coke or coal powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, lignite coal, or natural coal mineral powder; and (iii) a counter electrode in ionic contact with the electrolyte, and wherein a current is imposed upon the working electrode and the counter electrode for effecting electrochemical intercalation of the intercalating agent into the powder; and (b) exfoliating and separating graphene planes from the intercalated coke or coal compound using an ultrasonication, thermal shock exposure, mechanical shearing treatment, or a combination thereof to produce isolated graphene sheets.. .
Nanotek Instruments, Inc.

Use of a mineral having perovskite structure in vinyl aromatic polymer foam

The invention relates to the use of a mineral having perovskite structure in vinyl aromatic polymer foam, i) for decreasing the thermal conductivity, ii) for increasing the mechanical properties (namely compressive strength and bending strength), or iii) for improving the self-extinguishing properties of the foam. The polymer foam further comprises one or more athermanous additives selected from a) powder inorganic additive selected from powders of silica and calcium phosphate, b) powder carbonaceous additive selected from powders of graphite, carbon black, petroleum coke, graphitized carbon black, graphite oxides, and graphene, and c) powder geopolymer and powder geopolymer composite..
Synthos S.a.

Graphene oxide/magnesium oxide nanocomposites as superior sorbents for methylene blue removal from aqueous solutions

The present invention includes a composition, method of making and method of using a composite for the removal of waste from a wastewater or a waste stream wherein the composite comprises of graphene oxide and magnesium oxide nanoparticles at a ratio of 10:1 to 1:10 weight to weight.. .
Southern Methodist University

Ketyl radical induced photoreduction of graphene oxide; grafting of metal nanoparticles on graphene by photoreduction

Photoreduction of graphene oxide, by uv-generated ketyl radicals, to graphene. The photoreduction is versatile and can be carried out in solution, solid-state, and even in polymer composites.
Case Western Reserve University

Direct ultrasonication production of graphene sheets from coke or coal

Provided is a method of producing isolated graphene sheets from a supply of coke or coal powder containing therein domains of hexagonal carbon atoms and/or hexagonal carbon atomic interlayers. The method comprises: (a) dispersing particles of the coke or coal powder in a liquid medium containing therein an optional surfactant or dispersing agent to produce a suspension or slurry, wherein the coke or coal powder is selected from petroleum coke, coal-derived coke, meso-phase coke, synthetic coke, leonardite, anthracite, lignite coal, bituminous coal, or natural coal mineral powder, or a combination thereof; and (b) exposing the suspension or slurry to ultrasonication at an energy level for a sufficient length of time to produce the isolated graphene sheets..
Nanotek Instruments, Inc.

Multifunctional and stable nano-architectures containing nanocarbon and nano- or micro structures and a calcined hydrotalcite shell

Methods for making a multilevel core-shell structure having a core/graphene-based shell structure are described. A method for making a core/graphene-based shell structure can include obtaining a composition that includes core nano- or microstructures and graphene-based structures having at least a portion of a surface coated with a curable organic material, where the core nano- or microstructures and graphene-based structures are dispersed throughout the composition and subjecting the composition to conditions that cure the organic material and allow the graphene-based structures to self-assemble around the core nano- or microstructures to produce a core/graphene-based shell structure that has a graphene-based shell encompassing a core nano- or microstructure..
Sabic Global Technologies B.v.

Lithium ion conducting protective film and use

A lithium ion conducting protective film produced using a layer-by-layer assembly process. The lithium ion conducting protective film is assembled on a substrate by a sequential exposure of the substrate to a first poly(ethylene oxide) (peo) layer including a cross-linking silane component on the first side of the substrate, a graphene oxide (go) layer on the first peo layer, a second poly(ethylene oxide) (peo) layer including a cross-linking silane component on the go layer and a poly(acrylic acid) (paa) layer on the second peo layer.
Massachusetts Institute Of Technology

Reram using stack of iron oxide and graphene oxide films

There is provided a non-volatile memory device comprising: a substrate; a lower electrode disposed on the substrate; a resistance layer disposed on the lower electrode; and an upper electrode disposed on the resistance layer, wherein the resistance layer include a stack of a graphene oxide film and an iron oxide film, wherein a resistance value of the resistance layer varies based on a voltage applied to the upper electrode.. .
Gwangju Institute Of Science And Technology

Low-temperature polycrystalline silicon thin film transistor, and manufacturing fabricating the same, array substrate, display panel and display device

Disclosed are a low-temperature polycrystalline silicon thin film transistor (ltps tft), a method for fabricating the same, an array substrate, a display panel, and a display device. The ltps tft includes an active layer, a source, a drain, a gate, and a gate insulating layer which are arranged on a substrate.
Boe Technology Group Co., Ltd.

Patterning graphene with a hard mask coating

Embodiments of the disclosed technology include patterning a graphene sheet for biosensor and electronic applications using lithographic patterning techniques. More specifically, the present disclosure is directed towards the method of patterning a graphene sheet with a hard mask metal layer.
Nanomedical Diagnostics, Inc.

Providing a temporary protective layer on a graphene sheet

Embodiments of the disclosed technology include patterning a graphene sheet for biosensor and electronic applications using lithographic patterning techniques. More specifically, the present disclosure is directed towards the method of patterning a graphene sheet with a hard mask metal layer.
Nanomedical Diagnostics, Inc.

Depositing a passivation layer on a graphene sheet

Embodiments of the disclosed technology include depositing a passivation layer onto a surface of a wafer that may include a graphene layer. The passivation layer may protect and isolate the graphene layer from electrical and chemical conditions that may damage the graphene layer.
Nanomedical Diagnostics, Inc.

Methods for forming structures by generation of isolated graphene layers having a reduced dimension

Graphite-based devices with a reduced characteristic dimension and methods for forming such devices are provided. One or more thin films are deposited onto a substrate and undesired portions of the deposited thin film or thin films are removed to produce processed elements with reduced characteristic dimensions.
Solan, Llc

Contaminant detection device and method

A device for measuring ph levels and contaminant concentration includes an electrode assembly that is electrically coupled to a control unit. The electrode assembly includes a fluid first contact electrically coupled to a reference electrode, a second contact electrically coupled to a working electrode, and a third contact electrically coupled to a counter electrode.
Uwm Research Foundation, Inc.

Chelation directed c-h activation reactions catalyzed by solid-supported palladium(ii) catalysts

Chelation directed c—h activation reactions that are catalyzed by pd(11) on multi-walled carbon nanotubes (mwcnt), single-walled carbon nanotubes (swcnt), or graphene are provided. The reactions are used to directly and regioselectively or regiospecifically functionalize specific c—h bonds, e.g.
Virginia Commonwealth University

Quinolines, polyquinolines, molecular segments of fullerenes and graphene nanoribbons, and graphene nanoribbons and methods of their synthesis

Quinolines, polyquinolines, polybenzoquinolines, molecular segments of fullerenes and graphene nanoribbons, and graphene nanoribbons and processes for producing such materials are provided. The processes utilize a form of an aza-diels-alder (povarov) reaction to first form quinolines and/or polyquinolines.
The Regents Of The University Of California

Systems and methods for transferring graphene

The present disclosure is directed towards systems and methods for transferring graphene from the surface of one substrate to another. In one particular embodiment, the graphene layer is grown on a surface of a first substrate, where the bottom of the first substrate is then affixed to the surface of a second substrate.
Nanomedical Diagnostics, Inc.

Electrode material comprising graphene-composite materials in a graphite network

A durable electrode material suitable for use in li ion batteries is provided. The material is comprised of a continuous network of graphite regions integrated with, and in good electrical contact with a composite comprising graphene sheets and an electrically active material, such as silicon, wherein the electrically active material is dispersed between, and supported by, the graphene sheets..
Northwestern University

Flexible semiconductor device with graphene tape

A flexible semiconductor device includes a first tape having bonding pads and conductive traces formed. A semiconductor die having a bottom surface is attached to the first tape and electrically connected to the bond pads by way of electrical contacts.
Nxp Usa, Inc.

Semiconductor device and manufacturing semiconductor device

A semiconductor device including a semiconductor chip and a heat dissipation unit (heat sink) is configured as follows. The heat dissipation unit (heat sink) includes a resin tape, and a fin constituted of a graphite sheet and protruding from the resin tape.
Renesas Electronics Corporation

Metal-graphene heterojunction metal interconnects, forming the same, and semiconductor device including the same

Disclosed herein are a metal-graphene heterojunction metal interconnect, a method of forming the same, and a semiconductor device including the same. The method includes: a) forming a carbon source layer by depositing a carbon source on a top surface of a substrate; b) forming a metal catalyst layer by depositing a metal catalyst on the carbon source layer; and c) carrying out heat treatment on the substrate comprising the carbon source layer and the metal catalyst layer.
Gwangju Institute Of Science And Technology

Graphene paper and a process for making graphene paper and a graphene electrode

Described are processes for making graphene pellet (gp) with a three-dimensional structure. The process includes forming a nickel pellet from nickel powder to function as a catalyst for graphene growth, exposing the nickel pellet to a hydrocarbon under conditions sufficient to grow graphene, and etching nickel from graphene with an acid resulting in a graphene pellet.
University Of Cincinnati

Detector structure for electromagnetic radiation sensing

An apparatus with at least two electromagnetic radiation sensor cells that include graphene as an electromagnetic radiation absorbing material and electrical connections between the at least two sensor cells. The electrical connections are at least partially made of graphene..
Nokia Technologies Oy

Compositions and methods for corrosion inhibitor monitoring

graphene quantum dots are functionalized by covalently bonding a corrosion inhibitor molecule thereto. In a useful method, a corrosion inhibitor compound is blended with a graphene quantum dot-tagged corrosion inhibitor compound, and the blend is applied to a metal surface, such as the interior of a carbon steel pipe.
Ecolab Usa Inc.

Hydrophobic coatings (as amended)

A hydrophobic or superhydrophobic polymer composite comprising a lattice of poiycyclic aromatic hydrocarbons such as reduced graphene oxide (rgo) modified with at least one siloxane polymer and a method of preparation thereof is disclosed. A method of coating a material comprising immersing a material in a coating solution made from the rgo and siloxane polymer is also disclosed..
Agency For Science, Technology And Research

Paraffin suppressant compositions, and methods of making and using

Disclosed herein are graphene quantum dot tagged paraffin suppressants such as graphene tagged paraffin inhibitors and paraffin dispersants and methods of making and using thereof. The graphene quantum dots are covalently bound to residues of paraffin inhibitors or dispersed with paraffin dispersants to form tagged paraffin suppressants active in inhibiting paraffin crystallization or dispersing crystalized paraffin wax in crude oils and compositions comprising crude oils.
Ecolab Usa Inc.

Fluorescent water treatment compounds and use

Disclosed herein are graphene quantum dot tagged water source treatment compounds or polymers, and methods of making and using. Also described herein are tagged compositions including an industrial water source treatment compound or polymer combined with a graphene quantum dot tagged water source treatment compound or polymer.
Ecolab Usa Inc.

Smooth-surfaced graphite membrane and producing same

A graphite membrane includes graphene layers, wherein the graphite membrane is an independent graphite membrane having a thickness of 10 nm to 12 μm, an area of 5×5 mm2 or more, an electrical conductivity of 8000 s/cm or more, and an arithmetic average roughness ra of 200 nm or less on a surface of the graphite membrane.. .
Kaneka Corporation

Metal adsorbent and a making thereof

A metal adsorbent that includes silver-decorated graphene nano-platelets and a polymer matrix that comprises polyamide, wherein the metal adsorbent is a highly porous material with a specific surface area of 200 to 300 m2/g and an average pore size of 50 to 100 Å, which effective removes heavy metals and cations from a liquid. Various embodiments of the metal adsorbent and a method of making thereof are also provided..
King Fahd University Of Petroleum And Minerals

Graphene-metal hybrid foam-based electrode for an alkali metal battery

Provided is a lithium or sodium metal battery having an anode, a cathode, and a porous separator and/or an electrolyte, wherein the anode contains a graphene-metal hybrid foam composed of multiple pores, pore walls, and a lithium- or sodium-attracting metal residing in the pores; wherein the metal is selected from au, ag, mg, zn, ti, na (or li), k, al, fe, mn, co, ni, sn, v, cr, or an alloy thereof and is in an amount of 0.1% to 90% of the total hybrid foam weight or volume, and the pore walls contain single-layer or few-layer graphene sheets, wherein graphene sheets contain a pristine graphene or non-pristine graphene selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof.. .
Nanotek Instruments, Inc.

Alkali metal battery having an integral 3d graphene-carbon-metal hybrid foam-based electrode

Provided is a lithium or sodium metal battery having an anode, a cathode, and a porous separator and/or an electrolyte, wherein the anode contains an integral 3d graphene-carbon hybrid foam composed of multiple pores, pore walls, and a lithium-attracting metal residing in the pores; wherein the metal is selected from au, ag, mg, zn, ti, na, k, al, fe, mn, co, ni, sn, v, cr, or an alloy thereof and is in an amount of 0.1% to 50% of the total hybrid foam weight or volume, and the pore walls contain single-layer or few-layer graphene sheets chemically bonded by a carbon material having a carbon material-to-graphene weight ratio from 1/200 to 1/2, wherein graphene sheets contain a pristine graphene or non-pristine graphene selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof.. .
Nanotek Instruments, Inc.

Graphene-semiconductor based wavelength selective photodetector for sub-bandgap photo detection

graphene photodetectors capable of operating in the sub-bandgap region relative to the bandgap of semiconductor nanoparticles, as well as methods of manufacturing the same, are provided. A photodetector can include a layer of graphene, a layer of semiconductor nanoparticles, a dielectric layer, a supporting medium, and a packaging layer.
The University Of Hong Kong

Graphene/porous iron oxide nanorod composite and manufacturing method thereof

The present invention discloses a graphene/porous iron oxide nanorod composite and a method for preparing the same. The composite includes graphene and fe2o3 nanoparticles loaded on the graphene.
Soochow University

Graphene-based nanosensor for identifying target analytes

A microdevice for monitoring a target analyte is provided. The microdevice can include a field effect transistor comprising a substrate, a gate electrode, and a microfluidic channel including graphene.
The Trustees Of Columbia University In The City Of New York

Molecular detection apparatus and molecular detection method

A molecular detection apparatus according to an embodiment includes: a distributor which ionizes a target containing substances to be detected, applies voltage to ionized substances, and extracts the substances to be detected according to a time-of-flight based on the speed; a detector which detects the substance to be detected dropped from the distributor; and a discriminator which discriminates the substance to be detected. The detector includes: a plurality of detection units including field effect transistors using graphene layers; and a plurality of organic probes which are provided on the graphene layers, and at least some of which have different bond strengths with the substances to be detected.
Kabushiki Kaisha Toshiba

Integration of monolayer graphene with a semiconductor device

The integration of monolayer graphene with a semiconductor device for gas sensing applications involves obtaining a cmos device that is prepared to receive monolayer graphene channels. After population of the monolayer graphene channels on the cmos device, electrical contacts are formed at each end of the monolayer graphene channels with interconnect vias having sidewalls angled at less then 90°.
Board Of Regents, The University Of Texas System

Piezoresistive device

The present invention relates to piezoresistive devices and pressure sensors incorporating such devices. At its most general, the invention provides a piezoresistive device, comprising a piezoresistive material positioned between an upper conductive layer and a lower conductive layer, wherein the piezoresistive material comprises carbon nanoparticles (most preferably graphene nanoplatelets, graphene or carbon nanotubes) dispersed in a polymer matrix material.
Haydale Graphene Industries Plc

Anti-corrosion composite layers

An anti-corrosion composite layer includes a first anti-corrosion coating coated on a substrate, and a second anti-corrosion coating coated on the first anti-corrosion coating. The first anti-corrosion layer includes a plurality of first graphene nanosheets and a first carrier resin, wherein a surface of each the first graphene nanosheet has a first lipophilic functional group for chemically bonding to the first carrier resin, the first lipophilic functional group is selected from carboxyl, epoxy and amino.
Enerage Inc.

Stretchable electrically conductive layer formation by aerosol jet printing on flexible substrate

Methods of forming an electrically conductive layer on a flexible substrate, such as a stretchable electrode, by aerosol jet printing on the flexible substrate while the substrate is strained. In general, a stretchable substrate is initially deformed so that a first surface thereof is under tension.
Duke University

Graphene powder, electrode paste for lithium ion battery and electrode for lithium ion battery

The present invention relates to preparation of a highly dispersible graphene powder. Further, the present invention includes providing an electrode for a lithium ion battery having good output characteristics and cycle characteristics by utilizing a highly dispersible graphene powder.
Toray Industries, Inc.

Methods of graphene growth and related structures

A method and structure for providing uniform, large-area graphene by way of a transfer-free, direct-growth process. In some embodiments, a sam is used as a carbon source for direct graphene synthesis on a substrate.
National Taiwan University

Schottky barrier diode and electronic apparatus

A schottky barrier diode includes a graphene nanoribbon, a first electrode connected to one end of the graphene nanoribbon, and a second electrode connected to the other end of the graphene nanoribbon. The graphene nanoribbon includes a first part and a second part which are connected in the length direction of the graphene nanoribbon and which differ in electronic state.
Fujitsu Limited

Graphene double-barrier resonant tunneling device

An apparatus comprising: a fermion source nanolayer (90); a first insulating nanolayer (92); a fermion transport nanolayer (94); a second insulating nanolayer (96); a fermion sink nanolayer (98); a first contact for applying a first voltage to the fermion source nanolayer; a second contact for applying a second voltage to the fermion sink nanolayer; and a transport contact for enabling an electric current via the fermion transport nanolayer. In a particular example, the apparatus comprises three graphene sheets (90, 94, 98) interleaved with two-dimensional boron-nitride (hbn) layers (92, 96)..
Nokia Technologies Oy

A new class of electrocatalysts

Embodiments of the present disclosure pertain to electrocatalysts that include a surface and a plurality of catalytically active sites associated with the surface. The catalytically active sites include individually dispersed metallic atoms that are associated with heteroatoms.
William Marsh Rice University

Graphene metal nanoparticle-composite

The present disclosure relates to a method of preparing a graphene metal nanoparticle-composite, including: preparing graphene by applying a shearing force to a first solution containing a graphite-based material and thus exfoliating the graphite-based material; preparing metal nanoparticles by applying a shearing force to a second solution containing a metal precursor, a capping agent, and a reducing agent; and physically combining the metal nanoparticles on the graphene by applying a shearing force to a third solution containing the graphene and the metal nanoparticles, and a graphene metal nanoparticle-composite prepared according to the method.. .
Laminar Co., Ltd.

Method of producing graphene-based materials, obtainable materials and their use

A method of producing a graphene-based material, namely a direct sonication assisted method for producing a graphene-based material, in particular comprising 2d porous graphene includes subjecting a mixture of at least one carbide compound and at least one etching compound to sonication. This method enables the production of large amounts of a graphene-based material in a short time at ambient temperature and pressure and without the need for toxic reactants.
City University Of Hong Kong

Microfluidic biosensor for allergen detection

The present application relates to biosensors and methods for detecting and/or quantifying a target analyte such as a target allergen or toxin. In some embodiments, the biosensors use an allergen- or toxin-binding molecule conjugated to a fluorescent label such as a quantum dot that adheres to and is quenched by graphene oxide in the absence of the allergen or toxin..
University Of Guelph

Graphene oxide membranes and related methods

Membranes comprising graphene oxide sheets and associated filter media and methods are provided. In some embodiments, a membrane may comprise graphene oxide sheets that have undergone one or more chemical treatments.
Massachusetts Institute Of Technology

Chemical-free production of graphene-encapsulated electrode active material particles for battery applications

Provided is a simple, fast, scalable, and environmentally benign method of producing graphene-embraced or encapsulated particles of a battery electrode active material directly from a graphitic material, the method comprising: a) mixing graphitic material particles and multiple particles of a solid electrode active material to form a mixture in an impacting chamber of an energy impacting apparatus, wherein the graphitic material has never been intercalated, oxidized, or exfoliated and the chamber contains therein no previously produced graphene sheets and no ball-milling media; b) operating the energy impacting apparatus with a frequency and an intensity for a length of time sufficient for transferring graphene sheets from the graphitic material to surfaces of electrode active material particles to produce graphene-embraced electrode active material particles; and c) recovering the particles from the impacting chamber. Also provided is a mass of the graphene-embraced particles, electrode containing such particles, and battery containing this electrode..

Fabrication casting graphene quantum dots on light-emitting diodes and structure thereof

The present invention provides a fabrication method for casting graphene quantum dots on leds and the structure thereof. A graphene and an ethanol are mixed uniformly.
Chung Yuan Christian University

Direct transfer of multiple graphene layers onto multiple target substrates

Disclosed is a method of making a conductive material or active material that includes graphene or other 2-d materials. The method includes obtaining a layered stack.
Sabic Global Technologies B.v.

Graphene nmos transistor using nitrogen dioxide chemical adsorption

An n-type metal-oxide-semiconductor (nmos) transistor comprises a graphene channel with a chemically adsorbed nitrogen dioxide (no2) layer formed thereon. The nmos transistor may comprise a substrate having a graphene layer formed thereon and a gate stack formed on a portion of the graphene layer disposed in a channel region that further includes a spacer region.
Qualcomm Incorporated

Photodetector using bandgap-engineered 2d materials and manufacturing the same

A photodetector includes an insulating layer on a substrate, a first graphene layer on the insulating layer, a 2-dimensional (2d) material layer on the first graphene layer, a second graphene layer on the 2d material layer, a first electrode on the first graphene layer, and a second electrode on the second graphene layer. The 2d material layer includes a barrier layer and a light absorption layer.
Samsung Electronics Co., Ltd.

Graphene supercapacitor design and manufacture

Improvements in design and manufacturing techniques to produce a graphene based prismatic supercapacitor of very high capacitance with very high energy density storage able to outperform and replace the cutting edge batteries available in the market today.. .

Graphene, composition for preparing graphene, and preparing graphene using the composition

graphene, a composition for preparing graphene, and a method of preparing graphene using the composition are disclosed.. .
Hanwha Techwin Co., Ltd.

Graphene/polystyrene nanocomposite composition

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 University Of Petroleum And Minerals

Method of forming a surface-modified 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

Large scale oxidized graphene production for industrial applications

Existing methods of producing high quality graphene/graphite oxides are generally accomplished by exfoliating graphite into flakes and oxidizing the graphite flakes with strong oxidizers under extreme conditions and require careful purification. The oxidizers are typically strong acids used in high concentrations at elevated temperatures requiring complicated purification processes to yield oxidized graphene/sheets.
University Of Central Florida Research Foundation, Inc.

Method for preparing large graphene sheets in large scale

A method for preparing large graphene sheets in large scale includes steps of: under a mild condition, processing graphite powders with intercalation through an acid and an oxidant; washing away metal ions and inorganic ions in the graphite powders with dilute hydrochloric acid, then filtering and drying; and, finally processing with a heat treatment. The present invention breaks through a series of bottlenecks restricting an efficient preparation of graphene that result from a traditional method of using large amounts of deionized water to wash graphite oxide to be neutral, and easily realizes a batch production.
Shanghai Kyorenenew Materials Technology Co., Ltd

Nanocarbon immobilized membranes

Membranes including functionalized carbon nanotubes, nanodiamonds and/or graphene oxide immobilized in or on the membranes are disclosed. The membranes including the immobilized nanocarbons increase interactions with water vapor to improve desalination efficiency in membrane distillation.
New Jersey Institute Of Technology

Laser diodes with layer of graphene

According to an example of the present disclosure a semiconductor laser diode includes a layer of graphene between an active laser region and a semiconductor substrate structure. The semiconductor laser diode may further include a first pair of electrodes to apply a potential difference across the active laser region and a second pair of electrodes to apply a potential difference across the layer of graphene..
Hewlett Packard Enterprise Development Lp

Graphene tunneling photodetectors for high-temperature downhole use

Methods and systems including a photodetector of a downhole tool for performing downhole operations are provided herein. The photodetector includes a housing configured along a carrier disposed downhole within a borehole and a graphene tunneling photodetector located within the housing configured to perform a downhole operation..
Baker Hughes Incorporated

Green synthesis of reduced graphene oxide using nigella sativa seed extract

The green synthesis of reduced graphene oxide nanoparticles using nigella sativa seed extract comprises the steps of mixing a quantity of soot or other carbon source in an acid solution while stirring to obtain a solution; adding a first oxidant gradually into the solution to oxidize the soot and obtain a suspension; stirring the suspension while maintaining the temperature of the suspension at about 35° c.; adding nigella sativa seed extract to the suspension while raising the temperature of the suspension to about 60° c.; adding hydrogen peroxide to the suspension; and isolating the reduced graphene oxide nanoparticles by centrifugation.. .
King Saud University

Green synthesis of reduced graphene oxide using nigella sativa seed extract

The green synthesis of reduced graphene oxide nanoparticles using nigella sativa seed extract comprises the steps of mixing a quantity of soot or other carbon source in an acid solution while stirring to obtain a solution; adding a first oxidant gradually into the solution to oxidize the soot and obtain a suspension; stirring the suspension while maintaining the temperature of the suspension at about 35° c.; adding nigella sativa seed extract to the suspension while raising the temperature of the suspension to about 60° c.; adding hydrogen peroxide to the suspension; and isolating the reduced graphene oxide nanoparticles by centrifugation.. .
King Saud University

Green synthesis of reduced graphene oxide using nigella sativa seed extract

The green synthesis of reduced graphene oxide nanoparticles using nigella sativa seed extract comprises the steps of mixing a quantity of soot or other carbon source in an acid solution while stirring to obtain a solution; adding a first oxidant gradually into the solution to oxidize the soot and obtain a suspension; stirring the suspension while maintaining the temperature of the suspension at about 35° c.; adding nigella sativa seed extract to the suspension while raising the temperature of the suspension to about 60° c.; adding hydrogen peroxide to the suspension; and isolating the reduced graphene oxide nanoparticles by centrifugation.. .
King Saud University

Systems and methods for preparing monolayer, bi-layer, and multi-layer graphene from carbon sources

A method for making graphene comprising the steps of reacting a catalyst with a plurality of source carbon solids; creating a graphene precursor from the reaction of the catalyst with the plurality of source carbon solids; pyrolyzing the graphene precursor; and extracting graphene from the pyrolyzed graphene precursor. Creating a graphene precursor comprises the steps of creating a solution comprising deionized water and the catalyst; reacting the catalyst with the plurality of source carbon solids by mixing the plurality of source carbon solids into the solution comprising deionized water and the catalyst; heating the solution; and stirring the heated mixture until substantially all liquid has evaporated.
Universal Evergreen Element, Inc.

Green synthesis of reduced graphene oxide silica nanocomposite using nigella sativa seeds extract

The green synthesis of a reduced graphene oxide (rgo) silica (sio2) nanocomposite using nigella sativa seed extract includes mixing a quantity of carbon source in an acid solution while stirring to obtain a solution; adding a first oxidant gradually into said solution to oxidize the soot and obtain a first suspension; stirring the first suspension while maintaining a temperature of said suspension to about 35° c.; adding plant seeds extract to the first suspension while raising the temperature of the suspension to about 60° c.; adding a second oxidant to said suspension to form the reduced graphene oxide nanoparticles; isolating the reduced graphene oxide nanoparticles by centrifugation; suspending the reduced graphene oxide nanoparticles in water; adding a solution comprising tetraethyl orthosilicate (teos), concentrated aqueous ammonia solution and a plant seeds extract under ultrasonication; and increasing the temperature to about 90° c. To form reduced graphene oxide-silicon dioxide nanocomposite suspension..
King Saud University

Devices 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

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

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

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

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

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

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

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

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

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





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