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Graphene patents

      

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

SALE: 470+ Graphene-related patent PDFs



 Flexible asymmetric electrochemical cells using nano graphene platelet as an electrode material patent thumbnailFlexible asymmetric electrochemical cells using nano graphene platelet as an electrode material
A flexible, asymmetric electrochemical cell comprising: (a) a sheet of graphene paper as first electrode comprising nano graphene platelets having a platelet thickness less than 1 nm, wherein the first electrode has electrolyte-accessible pores; (b) a thin-film or paper-like first separator and electrolyte; and (c) a thin-film or paper-like second electrode which is different in composition than the first electrode; wherein the separator is sandwiched between the first and second electrode to form a flexible laminate configuration. The asymmetric supercapacitor cells with different ngp-based electrodes exhibit an exceptionally high capacitance, specific energy, and stable and long cycle life..
Nanotek Instruments, Inc.


 Nannoparticle/porous graphene composite, synthesizing methods and applications of same patent thumbnailNannoparticle/porous graphene composite, synthesizing methods and applications of same
In one aspect, the invention relates to a method of synthesizing a nannoparticle/porous graphene composite, including dispersing porous graphene structures into a solvent to form a dispersion of the porous graphene structures therein, adding precursors of nanoparticles into the dispersion of the porous graphene structures in the solvent to form a precursor mixture, and treating the precursor mixture to form a nannoparticle/porous graphene composite. The composite is formed such that the nanoparticles are uniformly distributed in pores of the graphene structures.
Hk Graphene Technology Corporation


 Graphene-enhanced anode particulates for lithium ion batteries patent thumbnailGraphene-enhanced anode particulates for lithium ion batteries
A nano graphene-enhanced particulate for use as a lithium-ion battery anode active material, wherein the particulate is formed of a single sheet of graphene or a plurality of graphene sheets and a plurality of fine anode active material particles with a size smaller than 10 μm. The graphene sheets and the particles are mutually bonded or agglomerated into the particulate with at least a graphene sheet embracing the anode active material particles.
Samsung Electronics Co., Ltd.


 3d graphene transistor patent thumbnail3d graphene transistor
A field effect transistor having a channel that comprises three-dimensional graphene foam. The subject matter of the invention concerns a three dimensional field-effect transistor having a channel based on graphene foam and the use of ionic liquid as a gate.
Tufts University


 Resistive change element array using vertically oriented bit lines patent thumbnailResistive change element array using vertically oriented bit lines
The present disclosure is directed toward carbon based diodes, carbon based resistive change memory elements, resistive change memory having resistive change memory elements and carbon based diodes, methods of making carbon based diodes, methods of making resistive change memory elements having carbon based diodes, and methods of making resistive change memory having resistive change memory elements having carbons based diodes. The carbon based diodes can be any suitable type of diode that can be formed using carbon allotropes, such as semiconducting single wall carbon nanotubes (s-swcnt), semiconducting buckminsterfullerenes (such as c60 buckyballs), or semiconducting graphitic layers (layered graphene).
Nantero Inc.


 Supercapacitor having  highly conductive graphene foam electrode patent thumbnailSupercapacitor having highly conductive graphene foam electrode
A supercapacitor electrode comprising a solid graphene foam impregnated with a liquid or gel electrolyte, wherein the solid graphene foam is composed of multiple pores and pore walls, wherein pore walls contain 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 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 the solid graphene foam, when measured in a dried state without electrolyte, has a physical density from 0.01 to 1.7 g/cm3, a specific surface area from 50 to 3,200 m2/g, a thermal conductivity of at least 200 w/mk per unit of specific gravity, and/or an electrical conductivity no less than 2,000 s/cm per unit of specific gravity.. .

 Production  a layer structure and layer structure patent thumbnailProduction a layer structure and layer structure
A production method for a layer structure, including providing a substrate, wherein at least a top surface of the substrate is made from a non-conductive material; depositing a catalyst structure onto the top surface of the substrate; depositing a graphene structure onto the catalyst structure; and at least partially removing the catalyst structure situated between the substrate and the graphene structure.. .
Robert Bosch Gmbh


 Coating layer structure applied to machine element and manufacturing method thereof patent thumbnailCoating layer structure applied to machine element and manufacturing method thereof
A manufacturing method a coating layer structure applied to a machine element includes: forming a continuous graphene structure layer on a metal substrate; and forming a coating layer on the continuous graphene structure layer for cooperatively protecting the metal substrate. The continuous graphene structure layer is disposed between the metal substrate and the coating layer to act as a buffer structure between the metal substrate and the coating layer..
H & H-t Co., Ltd.


 Hydraulic fracturing fluid patent thumbnailHydraulic fracturing fluid
A fracturing fluid including a base fluid including salt water, a polymer, a crosslinker, and a nanomaterial. The crosslinker may include a zr crosslinker, a ti crosslinker, an al crosslinker, a borate crosslinker, or a combination thereof.
Saudi Arabian Oil Company


 Graphene heat dissipation baking varnish patent thumbnailGraphene heat dissipation baking varnish
A graphene baking varnish consists of: graphene, fillers, at least one dispersants, binders, and solvent. The graphene includes graphene nanoflakes and accounts for 20 to70 wt % of solid composition of a graphene baking varnish.

Method for preparing sulfonated graphene from organic material and sulfonated graphene

The present invention relates to a method for preparing a sulfonated graphene from an organic material and to the sulfonated graphene prepared therefrom. The method comprises the following steps: a first contact step: a reaction medium containing oxidative sulfonating agent is allowed to come into contact with the organic macromolecular material at a first temperature; and, a second contact step: when the first contact step is completed, in same reaction medium, the reaction temperature is increased to a second temperature to allow for continued reaction, thus producing the sulfonated graphene..
Suzhou Graphene-tech Co., Ltd.

Method for preparing carbon powder from organic polymer material and detecting crystal morphology in organic polymer material

A method for preparing a carbon powder from an organic polymer material and a method for detecting the crystal morphology in the organic polymer material. A method for preparing a carbon material product comprises a carbonization step in which: a straight-chain polymer material containing nanoscale crystals is carbonized by using a strong oxidizing agent free of heavy metal ions, thus acquiring a nanoscale carbon material.
Suzhou Graphene-tech Co., Ltd.

Capacitor based automobile battery with backup lifepo charging system and charging circuit

A capacitor based automobile battery with backup lifepo charging system and charging circuit is disclosed. This invention improves on existing energy start modules (esm) in that it is designed as a full standalone replacement unit.

Homoepitaxial tunnel barriers with functionalized graphene-on-graphene and methods of making

This disclosure describes a method of making a tunnel barrier-based electronic device, in which the tunnel barrier and transport channel are made of the same material—graphene. A homoepitaxial tunnel barrier/transport device is created using a monolayer chemically modified graphene sheet as a tunnel barrier on another monolayer graphene sheet.
The Government Of The United States Of America, As Represented By The Secretary Of The Navy

Growth of semiconductors on hetero-substrates using graphene as an interfacial layer

graphene is used as an interfacial layer to grow si and other semiconductors or crystalline materials including two-dimensional si and other structures on any foreign substrate that can withstand the growth temperature without the limitation matching condition typically required for epitaxial growth.. .
The University Of North Carolina At Charlotte

Semiconductor device with graphene encapsulated metal and method therefor

A method for forming a semiconductor structure includes forming a first metal layer over a first dielectric layer, forming a first graphene layer on at least one major surface of the first metal layer, and forming a second dielectric layer over the first metal layer and the first graphene layer. The method further includes forming an opening in the second dielectric layer which exposes the first metal layer, forming a second metal layer over the second dielectric layer and within the opening, and forming a second graphene layer on at least one major surface of the second metal layer, wherein the second graphene layer is also formed within the opening..
Nxp Usa, Inc.

Supercapacitor having an integral 3d graphene-carbon hybrid foam-based electrode

Provided is a supercapacitor having an anode, a cathode, a porous separator/electrolyte, wherein at least one of electrodes contains an integral 3d graphene-carbon hybrid foam composed of multiple pores and pore walls, wherein 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 1/100 to 1/2, wherein the few-layer graphene sheets have 2-10 layers of stacked graphene planes having an inter-plane spacing d002 from 0.3354 nm to 0.40 nm and the graphene sheets contain a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.01% to 25% 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, doped graphene, chemically functionalized graphene, or a combination thereof.. .

High energy density and low leakage electronic devices

A magnetic capacitor includes a first electrode layer formed by depositing a first conducting material including graphene, a second electrode layer formed by depositing a second conducting material including graphene, and an insulator layer located between the first electrode layer and the second electrode layer. The magnetic capacitor further includes a first magnetized layer that includes one or more first ferro-magnetic elements that are magnetized to apply a first magnetic field to the insulator layer, and a second magnetized layer that includes one or more second ferro-magnetic elements that are magnetized to apply a second magnetic field to the insulator layer.

Electrical conductors and electronic devices including the same

An electrical conductor including a substrate, a first conductive layer including graphene, and a second conductive layer including a conductive metal nanowire, wherein the first conductive layer and the second conductive layer are disposed on the substrate, wherein the first conductive layer is disposed between the substrate and the second conductive layer or on the second conductive layer, wherein the first conductive layer has a first surface facing the second conductive layer and a second surface which is opposite to the first surface, and wherein, in the first surface and the second surface, the graphene is p-doped with a p-type dopant.. .
Samsung Electronics Co., Ltd.

Tester for detecting graphene security element in a security document, and the element detection method

A tester is described for detecting a graphene security element in a secure document, such as a banknote, an identification card, etc. As well as a method for detection of that element.

Graphene-based magnetic hall sensor for fluid flow analysis at nanoscale level

A method of detecting a particle comprises magnetizing a particle using an ac magnetic field; generating an ac voltage in a sensing device having a conductive substantially 2-dimensional lattice structure from the magnetized particle; superimposing a dc magnetic field on the generated ac voltage in the sensing device; and measuring an ac hall voltage at the sensing device.. .
International Business Machines Corporation

Graphene ultra-conductive casing wrap

A wrap configured to cover a surface of a casing surrounding a rotating member includes one or more graphene sheets and a matrix configured to stabilize the one or more graphene sheets. The matrix further configured to receive an adhesive or mechanical fastener and to bond to a surface of the casing using the adhesive or mechanical fastener.
General Electric Company

Methods of making diamond tables, cutting elements, and earth-boring tools

Methods of making cutting elements for earth-boring tools may involve placing a powdered mixture into a mold. The powdered mixture may include a plurality of core particles comprising a diamond material and having an average diameter of between 1 μm and 500 μm, a coating material adhered to and covering at least a portion of an outer surface of each core particle of the plurality of core particles, the coating material comprising an amine terminated group, and a plurality of nanoparticles selected from the group consisting of carbon nanotubes, nanographite, nanographene, non-diamond carbon allotropes, surface modified nanodiamond, nanoscale particles of beo, and nanoscale particles comprising a group viiia element adhered to the coating material.
Baker Hughes Incorporated

Transparent antistatic films

A transparent antistatic film of the present application includes a substrate and a transparent graphene coating, the substrate at least includes a first surface, and the transparent graphene coating is disposed above the first surface of the substrate. The transparent graphene coating has a surface resistance less than 1012 ohm/sq and a visible transmittance greater than 70% at wavelength of 550 nm, and the transparent graphene coating includes a plurality of surface modified graphene nanosheets and a carrier resin, wherein the plurality of surface modified graphene nanosheets is uniformly dispersed in the carrier resin.
Enerage Inc.

Process for preparing graphene nanoplatelets

Process for producing graphene nanoplatelets, comprising expanding flakes of intercalated graphite and collection of the same in a dispersing medium with forming of a dispersion that is subjected to exfoliation and size reduction treatment carried out by high pressure homogenization in a high shear homogenizer. A dispersion of graphene is obtained in the form of nanoplatelets, at least 90% of which have a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 50 nm..
Directa Plus S.p.a.

Continuous process for preparing pristine graphene nanoplatelets

Process for producing pristine graphene nanoplatelets, comprising the expansion of flakes of intercalated graphite and the collection thereof in water with formation of a dispersion in the substantial absence of surfactants, followed by an exfoliation and size reduction treatment carried out using ultrasonication of the aqueous dispersion or using high pressure homogenization thereof in a high shear homogenizer. A dispersion of pristine graphene is obtained in the form of nanoplatelets, at least 90% of which have a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 50 nm, having a c/o ratio ≧100:1 and a high electrical conductivity..
Directa Plus S.p.a.

Method of manufacturing graphene using doped carbon materials

Provided is a method of manufacturing graphene by unzipping doped carbon materials by an external stimulus and a graphene manufactured therefrom.. .
Korea Advanced Institute Of Science And Technology

Methods and systems for converting carbon dioxide into graphene

Methods for converting carbon dioxide (co2) into graphene are described. The methods include contacting a metal with gaseous carbon dioxide, and irradiating a surface of the metal with at least one laser beam to convert the gaseous carbon dioxide into graphene on the surface of the metal.
East China University Of Science And Technology

Graphene nanostructure-based pharmaceutical composition for preventing or treating neurodegenerative diseases

The present disclosure relates to a pharmaceutical composition for preventing or treating neurodegenerative diseases, the pharmaceutical composition including a graphene nanostructure as an active ingredient.. .
The Johns Hopkins University

Conductive component and electronic device including the same

A conductive component including: a substrate, a first layer comprising a plurality of island structures disposed on the substrate, wherein the island structures include graphene; and a second layer disposed on the first layer, wherein the second layer includes a plurality of conductive nanowires. Also, an electronic device including the conductive component..
Samsung Electronics Co., Ltd.

Low carrier phase noise fiber oscillators

The present disclosure relates to the design of fiber frequency comb lasers with low carrier phase noise. Examples of these low carrier phase noise oscillators can be constructed from both soliton and dispersion compensated fiber lasers via the use of intra-cavity amplitude modulators such as graphene modulators.
Imra America, Inc.

Lithium secondary battery

A lithium secondary battery includes: a negative electrode, a positive electrode, and an electrolyte disposed between the negative electrode and the positive electrode, wherein the negative electrode includes a silicon composite including silicon, a silicon oxide of the formula siox wherein 0<x<2 and disposed on the silicon, and a graphene disposed on the silicon oxide; or a carbonaceous composite including the silicon composite and a carbonaceous material, which is different from the graphene, and wherein at least one of the negative electrode and the electrolyte includes an ionic liquid containing a fluorosulfonyl imide anion, and a lithium salt.. .
Samsung Electronics Co., Ltd.

Secondary battery, graphene oxide, and manufacturing method thereof

To provide a manufacturing method of graphene oxide that allows mass production through a relatively simple process, at low costs, and with safety and efficiency. A hydrogen peroxide solution, sulfuric acid, and flake graphite are put in a reaction container, and the mixture is stirred to obtain expansion graphite.
Semiconductor Energy Laboratory Co., Ltd.

Carbon nanostructure device fabrication utilizing protect layers

Hall effect devices and field effect transistors are formed incorporating a carbon-based nanostructure layer such as carbon nanotubes and/or graphene with a sacrificial metal layer formed there over to protect the carbon-based nanostructure layer during processing.. .
International Business Machines Corporation

Graphene-ionic liquid composites

Method of making a graphene-ionic liquid composite. The composite can be used to make electrodes for energy storage devices, such as batteries and supercapacitors..
Vorbeck Materials Corporation

Method for manufacturing graphene composite film

The present invention provides a method for manufacturing a graphene composite film including preparing a zeolite suspension and a graphene oxide suspension containing graphene oxide, reducing the graphene oxide suspension until the graphene oxide is partially reduced to form partially-reduced graphene oxide, followed by adding the zeolite suspension and a surfactant into the partially-reduced graphene oxide suspension to form a composite solution, further reducing the composite solution until the partially-reduced graphene oxide is completely reduced to form graphene, and forming the composite solution into the graphene composite film on a substrate via plasma-enhanced atomizing deposition.. .
I-shou University

Graphene as a protective overcoat for magnetic media without the use of a nucleation layer

A graphene layer, used as an anti-corrosive protection medium for magnetic media, overcomes the existing problem of reducing the carbon overcoat layer thickness for magnetic media. Unlike the amorphous carbon that is currently used as an anti-corrosion layer, the impenetrability of graphene to all known gaseous substances enables full corrosion protection of the underlying magnetic medium with a layer of graphene that may be, for example, as thin as a single layer of graphene.
National University Of Singapore

Sensor

The present invention relates to a sensor for sensing hydrogen. The sensor of the present invention comprises: a core which reacts with hydrogen to change a resistance value; at least two electrodes connected to the core; and a variable resistor which is connected to at least one of the two electrodes and of which the resistance value changes in response to a control signal, wherein the core includes palladium having a thin film shape, and graphene which is applied on the palladium and has a thin film shape..
Korea Research Institute Of Standards And Science

An apparatus and associated methods

A percolation network of functionalised reduced graphene oxide flakes, the percolation network configured to allow for hopping of charge carriers between adjacent reduced graphene oxide flakes to enable a flow of charge carriers through the percolation network, and wherein the reduced graphene oxide flakes are functionalised to facilitate detectable changes in the flow of charge carriers in response to a stimulus to the percolation network.. .
Nokia Technologies Oy

Methods for atom incorporation into materials using a plasma afterglow

There are provided non-destructive methods for incorporating an atom such as n into a material such as graphene. The methods can comprise subjecting a gas comprising the atom to conditions to obtain a flowing plasma afterglow then exposing the material to the flowing plasma afterglow.
Valorisation-recherche, Limited Partnership

Crush-resistant proppant particulates for use in subterranean formation operations

Crush-resistant proppant particulates comprising proppant particulates at least partially coated with a polymeric material and inorganic particles, wherein the polymeric material comprises an organic polymeric material, or an inorganic polymeric material, or a combination thereof, wherein the organic polymeric material is selected from the group consisting of an organosilane, an organophosphonate, a polycarboxylic compound, a triazine, a resin comprising a silane coupling agent, and any combination thereof, wherein the inorganic polymeric material is aluminosilicate compound, and wherein the inorganic particle is between about 1 nm to about 10 μm in diameter and selected from the group consisting of alumina, boron carbide, boron nitride, silicate, glass, silicon carbide, silica, quartz, copper oxide, a microfiber, a nanofiber, core-shell, graphene, sodium silicate, sodium metasilicate, and any combination thereof.. .
Halliburton Energy Services, Inc.

Integral 3d graphene-carbon hybrid foam and devices containing same

Provided is an integral 3d graphene-carbon hybrid foam composed of multiple pores and pore walls, wherein 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 1/100 to 1/2, wherein the few-layer graphene sheets have 2-10 layers of stacked graphene planes having an inter-plane spacing d002 from 0.3354 nm to 0.40 nm and the graphene sheets contain a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.01% to 25% 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, doped graphene, chemically functionalized graphene, or a combination thereof. Also provided are a process for producing the hybrid form, products containing the hybrid foam, and its applications..

Graphene-based nanosensor for identifying target analytes

A receptor capable of binding to the target analyte can be used in monitoring a target analyte in a bodily fluid or a sample. A microdevice in accordance with the disclosed subject matter can include a substrate and a conductance elements with receptors grafted on the surface of the conductance element.
The Trustees Of Columbia University In The City Of New York

An electrochemical device includes a cathode containing graphene-wrapped li2s nanoparticles. The graphene-wrapped li2s nanoparticles are prepared by a method including heating lithium metal, and a carbon-sulfur source or a carbon source and a sulfur source in a sealed container at a temperature to produce lithium vapors, and vapors of the carbon-sulfur source or vapors of the carbon source and vapors of the sulfur source; and cooling the sealed container to produce the graphene-wrapped li2s nanoparticles..
Uchicago Argonne, Llc

Synthesis and incorporation of graphene and/or metallized or metal oxide-modified graphene to improve organic solar cells and hydrogen fuel cells

A composition used to form the active layer of a solar cell or hydrogen fuel cell that comprises, consists of or consists essentially of a homogenous dispersion, poly(3-hexylthiophene-2,5-diyl) (p3ht) and 1-(3-methoxycarbonyl)propyl-1-phenyl[6,6]c61 (pcbm). The homogenous dispersion comprises, consists of or consists essentially of graphene oxide (go) or reduced graphene oxide (rgo) and sulfonated polystyrene (pss) or para-methoxy-n-methylamphetamine (pmma).
The Research Foundation For The State University Of New York

Photovoltaic cells

This invention relates to cells and devices for harvesting light. Specifically the cell comprises at least one electrode which comprises graphene or modified graphene and layer of a transition metal dichalcogenide in a vertical heterostructure.
The University Of Manchester

Multilayer graphene, forming the same, device including the multilayer graphene, and manufacturing the device

A multilayer graphene, a method of forming the same, a device including the multilayer graphene, and a method of manufacturing the device are provided. In the method of forming the multilayer graphene, a first graphene is formed on an underlayer, and then a multilayer graphene is formed by exposing two adjacent areas on the first graphene to a source gas.
Samsung Electronics Co., Ltd.

Cellular graphene films

The present disclosure provides supercapacitors that may avoid the shortcomings of current energy storage technology. Provided herein are electrochemical systems, comprising three dimensional porous reduced graphene oxide film electrodes.
The Regents Of The University Of California

Graphene/graphite polymer composite foam derived from emulsions stabilized by graphene kinetic trapping

The present disclosure provides advantageous graphene/graphite stabilized composites (e.g., graphene/graphite stabilized emulsion-templated foam composites), and improved methods for fabricating such graphene/graphite stabilized composites. More particularly, the present disclosure provides improved methods for fabricating pristine, graphene/graphite/polymer composite foams derived from emulsions stabilized by graphene/graphite kinetic trapping.
University Of Connecticut

Graphene oxide sensors

Articles and methods involving sensors and thin films suitable for use in sensors are generally provided. In some embodiments, the sensors may comprise a graphene oxide component and/or a thin film with a percolated structure.
Edwards Vacuum

Electrochemical etching apparatus

An electroplating etching apparatus includes a power to output current, and a container configured to contain an electrolyte. A cathode is coupled to the container and configured to fluidly communicate with the electrolyte.
International Business Machines Corporation

Substrate carrier that carries a substrate on each of two broad sides of the substrate carrier that face away from each other

A substrate carrier is configured to be arranged in a cvd or pvd reactor, in particular for the deposition of carbon nanotubes or graphene. The substrate carrier has a first broadside surface and a second broadside surface facing away from the first broad-side surface.
Aixtron Se

Composite of paracoccus denitrificans immobilized on modified graphene oxide and its preparation method and application

This invention provided a preparation method of the composite which was immobilized paracoccus denitrificans on modified graphene oxide and its application. The composite was obtained by following the steps below: 1) synthesis of graphene oxide; 2) synthesis of modified graphene oxide; 3) acclimatization and immobilization of paracoccus denitrificans.
Soochow University

Selectively permeable graphene oxide membrane

Described herein is a graphene material based membrane that provides selective resistance for solutes or gas while providing water permeability. A selectively permeable membrane comprising graphene oxide, reduced graphene oxide, and also functionalized or crosslinked between the graphene, that provides enhanced salt separation from water or gas permeability resistance, methods for making such membranes, and methods of using the membranes for dehydrating or removing solutes from water are also described..
Nitto Denko Corporation

Nitrogen-doped graphene assembly and preparing the same

The present invention relates to a nitrogen-doped 3-d porous graphene assembly and a method of preparing the same. The present invention provides a method of preparing a nitrogen-doped graphene assembly, the method including the steps of mixing a graphene oxide solution with a melamine solution, freezing the mixed solution of graphene oxide and melamine, drying the frozen solution in a frozen state to prepare a graphene assembly, and heating the graphene assembly at a predetermined temperature under the argon atmosphere for a predetermined to time, in which a mass ratio of the graphene oxide and the melamine in the mixed solution is 19:1 to 4:1.
Agency For Defense Development

Graphite-based carbon material useful as graphene precursor, as well as producing the same

P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2h) based on the x-ray diffraction method.. .

Particles comprising stacked graphene layers

According to the invention there is a particle including a plurality of stacked sub-structures, each sub-structure including a stack of graphene layers, in which the separation between successive stacked sub-structures is greater than the separation between successive graphene layers in each sub-structure.. .
Pertuus Research & Development Limited

Composite material used for catalyzing and degrading nitrogen oxide and preparation method and application thereof

The invention discloses a composite material used for catalyzing and degrading nitrogen oxide and its preparation method and application thereof. The invention of the hollow g-c3n4 nanospheres/reduced graphene oxide composite-polymer carbonized nanofiber material is prepared as follow: 1) the preparation of silica nanospheres; 2) the preparation of hollow g-c3n4 nanospheres; 3) the preparation of graphene oxide; 4) the preparation of surface modified hollow g-c3n4 nanoparticles preparation; 5) the preparation of composites; 6) the preparation of composite-polymer carbon nanofiber material.
Soochow University

Sorbent comprising carbon and nitrogen and methods of using the same

The present invention relates to sorbents including carbon and nitrogen. In various embodiments, the sorbent can remove mercury from a mercury-containing gas that includes sulfur(vi) such as so3 more efficiently than other sorbents.
Energy & Environmental Research Foundation

Adsorption material and manufacturing the same and adsorption heat pump

An adsorption material is provided, which includes a graphene scroll of a graphene sheet wrapping along an axis. The graphene scroll has a spiral shape at a cross-section perpendicular to the axis.
Industrial Technology Research Institute

Phenothiazine/phenothiazone -graphene oxide composite

A composite of graphene oxide and ptz that may further entrap a redox enzyme. This composite can be used for detecting the substrate of the redox enzyme in a sample or for producing an acid byproduct of the enzymatic reaction.
Yissum Research Development Company Of The Hebrew University Of Jerusalem Ltd.

Belt additional substance having self-heating and functionality using graphne and nano inorganic substance, and belt and manufacturing method using the same

A method for manufacturing a belt, which molds a heating member 13 by 20 to 98 parts by weight selecting at least one of nonferrous metals constituted by tourmaline, bentonite, pozzolan, mica, red clay, zeolite, magnesium oxide, white clay, calcium, and silica, 0.1 to 30 parts by weight selecting at least one of a type tio sol, ag sol, and zno having a particle size of 5 to 20 nm, graphene 01 to 10 parts by weight having a particle size of 0.20 to 2.25 nm, and functional metal colloidal 0.05 to 8 parts by weight having a size of 1 to 10 nm by selecting at least one of ag, au, zn pt, and y, 20 to 98 parts by weight are combined by selecting at least one of the nonferrous metals and thereafter, ground into particle sizes of 500 to 1500 meshes.. .

Stretchable electronic device and fabricating the same

A stretchable electronic device includes a flexible substrate, a conductive fiber pattern formed on the flexible substrate, the conductive fiber pattern having a repetitive circular structure, and a graphene material attached to the conductive fiber pattern.. .
Electronics And Telecommunications Research Institute

Systems and methods of graphene supported catalysts

Functionalized graphene comprising graphene, a metal dispersed throughout the graphene, wherein the metal comprises pt, rh, pd, ag, au, ni, os, ir, alloys thereof, oxides thereof, or mixtures thereof, and a first functional group covalently bonded to the graphene, wherein the first functional group comprises sulfonate, so3−, carboxylate, coo−, a tertiary amine, nr3+, where r is h, alkyl, aryl, or combinations thereof, polybenzimidazole (pbi), poly(ethylene oxide) (peo), polyphenylene oxide (ppo), polyaniline, or mixtures thereof are disclosed. Methods of manufacture are also disclosed..
Indiana University Research And Technology Corporation

Fuel cells using vertically free standing graphene and carbon nanosheets

This disclosure is about invention of fuel cells comprising vertically free-standing graphene and carbon nanosheets in the components, and methods of making thereof. Performance enhancement effect of the fuel cell is achieved by using: an electrically conducting component whose surface is covered by vertically free-standing graphene and carbon nanosheets; and/or a catalyst supporting structure made of vertically free-standing graphene and carbon nanosheets; and/or a catalyst based on vertically free-standing graphene and carbon nanosheets.

Semiconductor device

Performance of a semiconductor device is improved. graphene particles are mixedly added in a sealing resin covering a semiconductor chip.
Renesas Electronics Corporation

Method of intercalating insulating layer between metal catalyst layer and graphene layer and fabricating semiconductor device using the same

Methods of intercalating an insulating layer between a metal catalyst layer and a graphene layer and methods of fabricating a semiconductor device using the intercalating method are provided. The method of intercalating the insulating layer includes forming the graphene layer on the metal catalyst substrate, intercalating nitrogen ions between the metal catalyst substrate and the graphene layer, and forming the insulating layer between the metal catalyst substrate and the graphene layer by heating the metal catalyst substrate to chemically combine the nitrogen ions with the metal catalyst substrate..
Samsung Electronics Co., Ltd.

Electrochemical devices comprising carbon-based material

Disclosed herein are embodiments of an electrochemical device comprising graphene material made using embodiments of the method disclosed herein. Also disclosed is a graphene electrode comprising the graphene material made using embodiments of the method disclosed herein.
University Of Idaho

Method for fabricating ultra-capacity battery

An ultra-capacitor battery includes multiple cathodes, each including a first substrate having a first surface and a second opposite surface, multiple first combs are arranged perpendicularly to the first surface of the first substrate in the same direction at a first interval, and a graphene layer on the first combs and on the first substrate. The battery also includes multiple anodes, each including a body portion and multiple second combs arranged perpendicularly to the body portion in the same direction at a second interval.
Semiconductor Manufacturing International (beijing) Corporation

Lightweight fire detection systems and methods

According to an embodiment, a heat detection system includes a graphene conductor, a housing containing the graphene conductor; and, a signal wire connected in electrical communication with the graphene conductor, the signal wire having a length that extends from the housing.. .
The Boeing Company

Chemical-free production of graphene-reinforced polymer matrix composites

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

Preparation graphene

Disclosed herein is a preparation method of graphene, capable of preparing graphene having a smaller thickness and a large area, and with reduced defect generation, by a simplified process. The preparation method of graphene includes forming dispersion including a carbon-based material including unoxidized graphite, and a dispersant; and continuously passing the dispersion through a high pressure homogenizer including an inlet, an outlet, and a micro-channel for connection between the inlet and the outlet, having a diameter in a micrometer scale, wherein the carbon-based material is exfoliated, as the material is passed through the micro-channel under application of a shear force, thereby forming graphene having a thickness in nanoscale..
Lg Chem, Ltd.

Ultrasound probe with optimized thermal management

An ultrasound probe (1) comprising a housing (6), a transducer assembly (301) operable to transmit ultrasonic energy towards a zone (801) of the probe adapted to be acoustically coupled to an object or area of interest, a cooling system comprising a heat transfer device (2, 5) arranged to transfer heat generated by the transducer assembly to one or more regions or areas (103, 7) located outside such transducer assembly. The heat transfer device comprises graphene..
Esaote S.p.a.

Methods and systems for heating and cooling seats and other user items utilizing thermally conductive sheet with one or more thermoelectric devices

A cooling and heating system for seats and other user items utilizes a thermally conductive sheet with one or more thermoelectric devices. This thermally conductive sheet has high thermal conductivity and is flexible, and may comprise polyimide, graphite, pgs graphite, carbon fiber, or more advanced materials such as graphene or carbon nanotubes or other high thermal conductivity material such as copper or aluminum sheet or mesh.
Novus Energy Technologies, Inc.

Temperature-adjusting hat

A temperature-adjusting hat, having a hat having an inside for accommodating a head and an outside, a thermoelectric couple having a first side and a second side having a temperature differential between the first and second sides, and wherein the first side is positioned near the inside of the hat, a power source connected to the thermoelectric couple, and one or more heat pipes connected to the second side, extending over the outside of the hat, wherein the one or more heat pipes has a constant temperature along a length. The hat may have a heat wicking layer in communication with the one or more heat pipes, configured to distribute a temperature from the heat pipes across the outside of the hat.

Method for fabricating graphene electrode

A graphene electrode, an energy storage device employing the same, and a method for fabricating the same are provided. The graphene electrode includes a metal foil, a non-doped graphene layer, and a hetero-atom doped graphene layer.
Industrial Technology Research Institute

Cathode for lithium batteries

The present invention relates to electrode composite, comprising: 0.1 wt % to 20 wt % graphene; 0.1 wt % to 20 wt % carbon black and 2 wt % to 20 wt % binder, the rest being an active material of lithium transition metal oxide having a spinel structure, such as lini0.5mn1.5o4 or limn2o4, or of a lithium transition metal compound having an olivine structure, such as lifepo4, and presenting the electrode a thickness equal or greater than 40 μm. The invention also relates to a cathode comprising a current collector and disposed on the current collector said electrode composite, to a lithium ion cell and to a battery module comprising said cathode, and to a battery pack comprising at least one battery module for use in devices such as electric vehicles, portable electric devices and stationary energy storage devices for renewable sources.
Repsol, S.a.

Highly conducting and oriented graphene film and production process

A process for producing a highly conducting film of conductor-bonded graphene sheets that are highly oriented, comprising: (a) preparing a graphene dispersion or graphene oxide (go) gel; (b) depositing the dispersion or gel onto a supporting solid substrate under a shear stress to form a wet layer; (c) drying the wet layer to form a dried layer having oriented graphene sheets or go molecules with an inter-planar spacing d002 of 0.4 nm to 1.2 nm; (d) heat treating the dried layer at a temperature from 55° c. To 3,200° c.

Gaming devices with graphene ink enabled features

A gaming table includes graphene ink enabled electronic features such as conductors, light or sound emitters, light detectors, touch or object detectors or displays. Conductive graphene ink may be printed on a gaming table fabric or felt which forms a playing surface of the gaming table.
Deq Systems Corporation

Hybrid fiber optic and graphene cable

An optical cable can include one or more graphenic elements disposed about one or more optically transmissive fibers. A graphenic element can be a coating of graphene or amorphous graphite, a ribbon of graphene or amorphous graphite, or fibers of graphene or amorphous graphite.
Halliburton Energy Services, Inc.

Method for preparing graphene/pedot:pss solution and preparing substrate having graphene/pedot:pss composite transparent conductive film

A method for preparing a graphene/pedot:pss solution and preparing a substrate having a graphene/pedot:pss composite transparent conductive film of the disclosure use graphene and pedot:pss solution for preparing a graphene/pedot:pss solution used for preparing a transparent conductive film. The sources of the materials are wide and the cost is cheap.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Chemical-free production of graphene materials

A method of producing isolated graphene sheets directly from a graphitic material, comprising: a) mixing multiple particles of a graphitic material and multiple particles of a solid carrier material to form a mixture in an impacting chamber of an energy impacting apparatus; b) operating the impacting apparatus for peeling off graphene sheets from the graphitic material and transferring these graphene sheets to surfaces of solid carrier material particles to produce graphene-coated solid particles inside the impacting chamber; c) separating the graphene sheets from the solid carrier material particle surfaces to recover isolated graphene sheets. The method enables production of graphene sheets directly from a graphitic material without going through a chemical intercalation or oxidation procedure.

Preparation graphene and dispersed composition of graphene

Disclosed herein are a preparation method of graphene, capable of easily preparing a graphene flake having a smaller thickness and a large area, and a dispersed composition of graphene obtained using the same. The preparation method of graphene includes applying a physical force to dispersion of a carbon-based material including graphite or a derivative thereof, and a dispersant, wherein the dispersant includes a mixture of plural kinds of polyaromatic hydrocarbon oxides, containing the polyaromatic hydrocarbon oxides having a molecular weight of 300 to 1000 in a content of 60% by weight or more, and the graphite or the derivative thereof is formed into a graphene flake having a thickness in nanoscale under application of a physical force..
Lg Chem, Ltd.

Method of making a high efficiency electrical wire

In a method of treating a material solvent, brass granules, copper granules, and carbon nanotubes are mixed, in the absence of silver, iron pyrite, and graphene, to form a first mixture. The first mixture is then added to a second mixture of brass and copper granules.
Bourque Industries, Inc.

Porous graphene based composite membranes for nanofiltration, desalination, and pervaporation

Membranes of the present disclosure possess very thin barrier layers, with high selectivity, high throughput, low fouling, and are long lasting. The membranes include graphene and/or graphene oxide barrier layers on a nanofibrous supporting scaffold.
The Research Foundation For The State University Of New York

Method of making highly flexible and conductive printed graphene-based laminate for wireless wearable communications

A printed graphene-based laminate for wireless wearable communications can be processed at low temperature so that it is compatible with heat-sensitive flexible materials like papers and textiles. The printed graphene-based laminate is of high conductivity, high flexibility, light weight and low cost, making it perfect candidate for wireless wearable devices.

Wireless earpieces utilizing graphene based microphones and speakers

A system, method, and wireless earpiece. The wireless earpiece includes a frame supporting circuitry of the wireless earpiece.
Bragi Gmbh

Graphene based mesh for use in portable electronic devices

A system, method, and wireless earpiece. The wireless earpiece includes a frame supporting circuitry of the wireless earpiece the frame includes an extension composed of graphene shaped to fit in to an ear canal of a user.
Bragi Gmbh

Portable electronic device

A portable battery-powered electronic device including a battery, a microprocessor and a display screen is provided. The device is characterised in that it further includes an integral rechargeable battery-charging unit connected to the battery comprising: a supercapacitor comprised of one or more sheets of graphene or a graphene-containing material; a power module adapted to provide up to 40 amps to the supercapacitor from a source of alternating current rated at 100 volts or above; an output converter adapted to deliver direct current power from the supercapacitor to the battery; and a control module adapted to control the delivery of the direct current power from the supercapacitor to the battery.
Zapgo Ltd

Negative active material for sodium secondary battery, preparing thereof and sodium secondary battery using the same

Sodium negative active material may have a metal phosphate having a uniform size distribution structures to graphene surface. The negative active material is a metal or a metal oxide precursor in a graphite dispersion solution; and the addition of phosphate, and then applying a microwave, can be produced by heat treatment..
University-industry Foundation, Yonsei University

Graphene transistor and related methods

A method and structure for providing high-quality transferred graphene layers for subsequent device fabrication includes transferring graphene onto a hydrophobic surface of a hydrophobic layer and performing a thermal treatment process. In various embodiments, a substrate including an insulating layer is provided, and a hydrophobic layer is formed over the insulating layer.
Taiwan Semiconductor Manufacturing Company, Ltd.

Method for preparing an electrically conductive stratified composite structure

The invention relates to a process for preparing an electrically conductive composite film, in particular in the form of a self-supported film or of a prepreg, comprising at least one thermoplastic polymer resin and electrically conductive particles chosen from a) graphene, carbon nanotubes, carbon nanofibres, and mixtures thereof; and b) filiform metal nanoparticles; to a process for preparing an electrically conductive laminated composite structure comprising such an electrically conductive composite film; to said electrically conductive composite film, to said electrically conductive laminated composite structure, and also to the uses thereof.. .
Universite Toulouse Iii - Paul Sabatier

Metal nanowire having core-shell structure coated with graphene, and manufacturing method therefor

The present invention relates to a method for manufacturing a nanowire of a core-shell structure including a metal nanowire core and a graphene shell, comprising the steps of: providing a metal nanowire; and coating the metal nanowire with graphene by a plasma chemical vapor deposition method. In addition, the present invention relates to: a nanowire having a core-shell structure including a metal nanowire core and a graphene shell; and a transparent electrode formed from the nanowire.
Daegu Gyeongbuk Institute Of Science And Technology

Alumina composite ceramic composition and manufacturing the same

Provided is an alumina composite ceramic composition which has electrical insulation properties as well as better mechanical strength and thermal conductivity than a typical alumina-based material. Thus, the alumina composite ceramic composition is promising for a material of a substrate or an insulating package of an electronic device.
Korea Institute Of Ceramic Engineering & Technology

Functional graphene nanostructure devices from living polymers

The disclosure provides methods to synthesize graphene based hetero-nanostructures, the graphene based hetero-nanostructures resulting therefrom, and devices comprising the graphene based hetero-nanostructures thereof.. .
The Regents Of The University Of California

Porous graphene member, manufacturing same, and manufacturing same using the method

Disclosed are a porous graphene member having through-holes formed therein, a method for manufacturing the porous graphene member, and an apparatus for manufacturing the porous graphene member using the method. The method comprises: introducing a carbon source and a substitution reaction source into a deposition furnace; thermally decomposing the carbon source and the substitution reaction source simultaneously to generate carbon atoms and substitution atoms, respectively, wherein the carbon atoms are deposited on a substrate present within the deposition furnace to form a graphene film consisting of a monoatomic layer structure, and during the deposition of carbon atoms, the substitution atoms not only interfere with covalent bonds between the carbon atoms to cause crystal defects, but also substitute for parts of the carbon atoms to in situ form through-holes in the graphene, thereby creating the porous graphene member; and releasing the porous graphene member from the substrate..
Korea Institute Of Energy Research

Sorption and separation of various materials by graphene oxides

Methods of sorption of various materials from an environment are disclosed herein. Embodiments of the materials include radioactive elements chlorates, perchlorates, organohalogens, and combinations thereof.
Zonko, Llc

Method for manufacturing porous graphene filter, porous graphene filter manufactured using same, and filter apparatus using porous graphene filter

Disclosed herein are porous graphene filters, each consisting of a carbon monoatomic layer having small holes formed therein during the graphene formation, a plurality of the porous graphene filters being used to selectively filter a specific material from a mixture of at least two different materials, a method for manufacturing the same, and a filtering apparatus using the same. The method comprises: separately forming a first graphene filter having a first hole of a first size and a second graphene filter having a second hole of a second size, during deposition of carbon atoms generated from a carbon source for formation of graphene, by substituting the carbon atoms, in part, with a substitution atom generated from a substitution source, the second size being larger than the first size; and arranging the first graphene filter and the second graphene filter in a filter body equipped with an inlet and an outlet..
Korea Institute Of Energy Research

Graphene based ultrasound generation

A system, method, and graphene device. The graphene devices includes one or more graphene layers configured to emit a wave to a site of a body of a user.
Bragi Gmbh

Process for silicon nanowire-graphene hybrid mat

Disclosed is a process for producing graphene-silicon nanowire hybrid material, comprising: (a) preparing a catalyst metal-coated mixture mass, which includes mixing graphene sheets with micron or sub-micron scaled silicon particles to form a mixture and depositing a nano-scaled catalytic metal onto surfaces of the graphene sheets and/or silicon particles; and (b) exposing the catalyst metal-coated mixture mass to a high temperature environment (preferably from 300° c. To 2,000° c., more preferably from 400° c.

Method of making and using flexible elastic nanotube composite

A method of fabricating and using of flexible elastic photo-thermoelectric or thermoelectric cells is being presented, where the thermoelectric materials have been used in nanohybrid (pristine form). The casing of the cells is made up of flexible elastic materials (plastic, rubber).

Layered body and electronic element

A laminated body includes: a substrate portion composed of silicon carbide; and a graphene film disposed on a first main surface of the substrate portion, the graphene film having an atomic arrangement oriented with respect to an atomic arrangement of the silicon carbide of the substrate portion. A region in which a value of g′/g in raman spectrometry is not less than 1.2 is not less than 10% in an area ratio in an exposed surface of the graphene film, the exposed surface being a main surface of the graphene film opposite to the substrate portion..

Growing graphene on substrates

Embodiments described herein provide methods and apparatus for forming graphitic carbon such as graphene on a substrate. The method includes providing a precursor comprising a linear conjugated hydrocarbon, depositing a hydrocarbon layer from the precursor on the substrate, and forming graphene from the hydrocarbon layer by applying energy to the substrate.

System for detecting rare cells

This disclosure provides a system for detecting rare cells. The system includes a substrate, an extension coupled to the substrate and extending outwardly from the substrate, and a functionalized graphene oxide disposed on the extension.

Cryocooler containing additively-manufactured heat exchanger

An apparatus includes a heat exchanger configured to transfer heat to a fluid and to absorb heat from the fluid as the fluid flows between a warm end and a cold end of a cryocooler. The heat exchanger includes at least one section having a substrate of at least one allotropic form of carbon and a layer of nanoparticles on or over the substrate.

High conductivity graphene-metal composite and methods of manufacture

Embodiments of the present technology include graphene-metal composites. An example graphene-metal composite comprises a porous metal foam substrate, a graphene layer deposited to the porous metal foam substrate, a metal layer applied to the graphene layer, and another graphene layer deposited to the metal layer; the multilayered porous metal foam substrate being compressed to form a graphene-metal composite..

Method for forming nano-gaps in graphene

The present invention relates to a method for forming nano-gaps in graphene. The method may include applying a voltage across a region of graphene such that a nano-gap which extends across the entire width of the graphene is formed, wherein the region across which the voltage is applied may include a point which is the narrowest in the region..

Fast production of high quality graphene by liquid phase exfoliation

A method of exfoliating graphite into graphene uses a sequence of flow and sonication on graphite suspensions. Graphite particles after intense mixing/grinding in a liquid are found to be altered, graphite having curled-up edges, which increases its sensitivity to ultrasound.

Method for growing graphene by chemical vapor deposition

A method for growing graphene by chemical vapor deposition is described. At least one substrate is loaded in a furnace.

Self-sealing tire sealant and pneumatic vehicle tire

Self-sealing tire sealants are provided which contain fragments and/or residues of expanded solids, where the solids are selected from the group containing expandable graphite and microspheres. In some aspects, the microspheres include at least isobutane and/or isopentane as blowing agents.

Graphene-based membrane and preparation thereof

A method of preparing a graphene-based membrane is provided. The method may include providing a stacked arrangement of layers of a graphene-based material, wherein the layers of the graphene-based material define one or more nanochannels between neighboring layers, and varying an electrical charge on a surface of the layers of the graphene-based material defining the one or more nanochannels to control size selectivity and/or ionic selectivity of the graphene-based membrane.

Graphene and graphene-related materials for manipulation of cell membrane potential

Structures based on graphene-related materials, methods for their preparation, and methods for their use are disclosed. These structures can be utilized for manipulating the cell transmembrane potential in various biomedical applications..

Vehicle communication system with heated antenna

A communication system for a vehicle includes a control operable to communicate with a device remote from the vehicle, and an antenna disposed at an exterior portion of the vehicle. The control at least one of (i) wirelessly transmits signals via the antenna to a remote receiver and (ii) receives signals via the antenna wirelessly transmitted by a remote transmitter.
Magna Electronics Inc.

Graphene-encapsulated electroactive material for use in a lithium ion electrochemical cell

An electrochemically active material including composite particles that each include a graphene-based material shell surrounding nanoparticles of a core material. The composite particles may include a bet surface area of less than about 75 m2/g.
Sinode Systems, Inc.

Tft substrate structure and manufacturing method thereof

The present invention provides a tft substrate structure and a manufacturing method thereof. In the manufacturing method of a tft substrate structure according to present invention, 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, wherein 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; portions of the graphene layer that are located under source and drain electrodes are not doped with ions and preserves the excellent electrical conduction property of graphene and thus electrical connection between the source and drain electrodes and the semiconductor layer can be achieved without formation of a via in the graphene layer, making a tft device so manufactured showing excellent i-v (current-voltage) output characteristics and stability, saving one mask operation process, shortening the manufacturing time, and lowering down the manufacturing cost..
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Polymer on graphene

A top-gated graphene field effect transistor can be fabricated by forming a layer of graphene on a substrate, and applying an electrochemical deposition process to deposit a layer of dielectric polymer on the graphene layer. An electric potential between the graphene layer and a reference electrode is cycled between a lower potential and a higher potential.
Nutech Ventures

Activated carbons from dairy products

An electrode of an energy storage device and methods of fabrication are provided which include: pyrolyzing a carbon-containing precursor to form a stabilized-carbonized material; and annealing the stabilized-carbonized material to form a structurally-modified activated carbon material. The structurally-modified activated carbon material includes a tunable pore size distribution and an electrochemically-active surface area.
Clarkson University

Multilayer structure

A multilayer structure comprising a first layer, a second layer and a third layer, a capacitor comprising at least one multilayer structure, a capacitor comprising at least two two-layer structures, a method of manufacture of the multilayer structure, a method of manufacture of the capacitor, a microelectronic device and an energy storage device comprising the capacitor. The multilayer structure comprises a first layer, a second layer and a third layer, wherein the first layer and the third layer each form at least one of at least two electrodes and comprise one or more pyrolysed carbon nanomembranes or one or more layers of graphene, and the second layer is a dielectric comprising one or more carbon nanomembranes..
Cnm Technologies Gmbh

Cotton fiber dissolution and regeneration and 3d printing of cellulose based conductive composites

The present invention includes composition and methods for a core matrix comprising a dissolved cellulose fiber of, e.g., high molecular weight (dp>5000) or microcrystalline cellulose of low molecular weight (dp: 150-300), printed into a two or three dimensional pattern; a conductive material comprising a carbon nanotube or graphene oxide disposed on or about the cellulose fiber or microcrystalline cellulose; and an enhancer or stabilizer that stabilizes the dissolved cellulose or microcrystalline cellulose disrupted during a printing process, wherein the conductive material and the cellulose or microcrystalline cellulose forms one or more features in or on the cellulose fiber or microcrystalline cellulose.. .
Texas Tech University System

Element and formation film

A novel element is provided. A novel film formation method is provided.
Semiconductor Energy Laboratory Co., Ltd.

Human-machine interface with graphene-pyroelectric materials

A version of the invention comprises a device for controlling or interfacing with a computer or other form of communicable machine based on the pyroelectric effect, and includes at least one optically- and infrared- (ir-) transparent graphene electrode.. .
National University Of Singapore

Graphene-based magnetic hall sensor for fluid flow analysis at nanoscale level

A method of detecting a particle comprises magnetizing a particle using an ac magnetic field; generating an ac voltage in a sensing device having a conductive substantially 2-dimensional lattice structure from the magnetized particle; superimposing a dc magnetic field on the generated ac voltage in the sensing device; and measuring an ac hall voltage at the sensing device.. .
International Business Machines Corporation

Metallic or metallized, graphenized reinforcement

A threadlike metallic or metallized reinforcer, for example a thread, film, tape or cord made of carbon steel, at the periphery of which is positioned a layer of metal referred to as “surface metal” chosen from copper, nickel and copper/nickel alloys, is characterized in that this surface metal layer is itself coated, at least in part, with at least one layer of graphene; preferably, there is grafted, to this graphene, at least one functional group which can crosslink to a polymer matrix. This reinforcer of the invention is effectively protected from corrosion by virtue of the graphene present at the surface; advantageously, it can be adhesively bonded directly, without adhesion primer or addition of metal salt, to an unsaturated rubber matrix, such as natural rubber, by virtue of the possible functionalization of this graphene..
Michelin Recherche Et Technique S.a.

Graphene composite material and preparation method thereof

The present invention relates to a graphene composite material and a preparation method thereof, wherein the preparation method of the graphene composite material comprises the steps of: providing a modification solution comprising a compound having catechol group, and a first solvent; adding a graphene material into the modification solution; and mixing the graphene material and the modification solution to form a graphene composite material.. .
Chung Yuan Christian University

High-density polyethylene-graphene nanocomposites and methods thereof

Methods of preparing high-density polyethylene (hdpe) nanocomposites by in situ polymerization with a metallocene catalyst and a methylaluminoxane co-catalyst in a solvent. The hdpe nanocomposites contain graphene nanofillers that promote the polymerization process, and are found to enhance the molecular weight, molecular weight distribution and flame retardency of the hdpe nanocomposites produced..
King Fahd University Of Petroleum And Minerals

Porous graphene preparation method

Provided is a porous graphene preparation method, comprising: under the function of a catalyst, conducting catalytic treatment on a biomass carbon source to obtain a first intermediate product, the catalyst comprising one or more of chlorides of manganese, iron compounds, cobalt compounds and nickel compounds; under protective gas condition, heating the first intermediate product from a first temperature to a second temperature and holding to obtain a second intermediate product; heating the second intermediate product from the second temperature to a third temperature and holding to obtain a third intermediate product; heating the third intermediate product from the third temperature to a fourth temperature and holding to obtain a fourth intermediate product; and cooling the fourth intermediate product from the fourth temperature to a fifth temperature and holding to obtain porous graphene. The porous graphene prepared via the method of the present invention has better electrical conductivity..
Jinan Shengquan Group Share Holding Co., Ltd.

Method of making nanocomposites of metal oxide and reduced graphene oxide and use for cancer treatment

A facile approach is described to prepare monodisperse fe3o4 and co3o4 nanoparticles on chemically reduced graphene oxide (rgo) to form nanocomposites by low temperature solution route and mwi method, respectively. These processes are environmentally friendly and convenient compared with previously reported methods.
Alfaisal University

Positive electrode for lithium secondary battery, manufacturing method thereof, and lithium secondary battery

Occlusion and release of lithium ion are likely to one-dimensionally occur in the b-axis direction of a crystal in a lithium-containing composite oxide having an olivine structure. Thus, a positive electrode in which the b-axes of lithium-containing composite oxide single crystals are oriented vertically to a surface of a positive electrode current collector is provided.
Semiconductor Energy Laboratory Co., Ltd.

Transparent electrodes and electronic devices including the same

A transparent electrode including: a substrate; a first layer disposed on the substrate, the first layer including a graphene mesh structure, the graphene mesh structure including graphene and a plurality of holes; and a second layer disposed on the first layer, wherein the second layer includes a plurality of conductive nanowires.. .
Samsung Electronics Co., Ltd.

Graphene fet with graphitic interface layer at contacts

A method for forming a graphene fet includes providing a graphene layer having a surface. A first metal layer having a work function <4.3 ev is deposited on the graphene surface.
Texas Instruments Incorporated

Capacitor cathode foil structure and manufacturing method thereof

The instant disclosure relates to a manufacturing method of capacitor cathode foil structure, comprising the following steps. The first step is providing a base foil, subsequently inserting the foil into a reactor.
Apaq Technology Co., Ltd.

Local carbon-supply device and preparing wafer-level graphene single crystal by local carbon supply

The present disclosure provides a local carbon-supply device and a method for preparing a wafer-level graphene single crystal by local carbon supply. The method includes: providing the local carbon-supply device; preparing a nickel-copper alloy substrate, placing the nickel-copper alloy substrate in the local carbon-supply device; placing the local carbon-supply device provided with the nickel-copper alloy substrate in a chamber of a chemical vapor-phase deposition system, and introducing a gaseous carbon source into the local carbon-supply device to grow the graphene single crystal on the nickel-copper alloy substrate.
Shanghai Institute Of Microsystem And Information Technology, Chinese Academy Of Sciences

Guiding stem cell differentiation using graphene-nanofiber hybrid scaffolds

The present invention relates to graphene oxide-coated nanofiber scaffold that provides instructive physical cues to the differentiation of stem cells into selected cell lineages or networks.. .
Rutgers, The State University Of New Jersey

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.

High strength polymer filament for fdm 3d printer including graphene coated metal nanoparticles, nanocarbons for 3d printer, and preparation the same

Accordingly, according to the present invention, the 3d printer polymer filament and the manufacturing method includes mixing the graphene coated metal nanoparticles, the carbon nanotubes, and the polymer, using the manufactured mixture to form a filament through extrusion, and forming a 3d printed article by using the filament, thereby improving the strength and the durability by using the graphene coated metal nanoparticles and the carbon nanotubes.. .

Gas barrier material with atomic sheet

A gas barrier material includes an atomic sheet, such as graphene and/or an analog of graphene. The gas barrier material can be arranged as part of a component, such as a container or other vessel, to limit the flow or permeation of gas through the component.
Lockheed Martin Corporation

Carbon nanostructure preblends and their applications

A method for preparing a “preblend” of nano-structured carbon, such as nanotubes, fullerenes, or graphene, and a particulate solid, such as polymer beads, carbon black, graphitic particles or glassy carbon involving wet-mixing and followed by optional drying to remove the liquid medium. The preblend may be in the form of a core-shell powder material with the nano-structured carbon as the shell on the particulate solid core.
Gates Corporation

Graphene-based filter for isolating a substance from blood

A device isolates a substance from blood. The substance includes particles with an effective diameter that is within a range defined by effective diameters of constituents of blood.
Lockheed Martin Corporation

Electrode material for a lithium ion battery and the preparing the same

An electrode material for a lithium ion battery includes conductive active particles and an ionic cover layer covering the active particles. The ionic cover layer includes a matrix of functional group-substituted polyaryletherketone and graphene particles dispersed in the matrix.
Get Green Energy Corp., Ltd.

Nitrogen-doped graphene coated nano sulfur positive electrode composite material, preparation method, and application thereof

The invention provides a nitrogen-doped graphene coated nano sulfur positive electrode composite material, a preparation method, and an application thereof. The composite material includes: an effective three-dimensional conductive network formed by overlapping of nitrogen-doped graphenes, and nano sulfur particles coated by nitrogen doped graphene layers evenly.
Suzhou Institute Of Nano-tech And Nano-bionics, Chinese Academy Of Science

Method of making a graphene base transistor with reduced collector area

A method of making a graphene base transistor with reduced collector area comprising forming an electron injection region, forming an electron collection region, and forming a base region wherein the base region comprises one or more sheets of graphene and wherein the base region is intermediate the electron injection region and the electron collection region and forms electrical interfaces therewith.. .
The Government Of The United States Of America, As Represented By The Secretary Of The Navy

Graphene structure and manufacturing the same

A graphene structure is provided. The graphene structure includes a two-dimensional base graphene layer having a defect, and a linking material provided at the defect of the base graphene layer..
Iucf-hyu (industry-university Cooperation Foundati On Hanyang University)

Transparent electrodes and electronic devices including the same

A transparent electrode including: a first layer including a thermosetting copolymer including a first repeating unit having an aromatic moiety as a pendant group or incorporated in a backbone of the copolymer and a second repeating unit capable of lowering a curing temperature, a combination of a first polymer including the first repeating unit and a second polymer including the second repeating unit, or a combination thereof; a second layer disposed directly on one side of the first layer, wherein the second layer includes graphene; and a third layer disposed on the second layer, wherein the third layer includes an electrically conductive metal nanowire.. .
Samsung Electronics Co., Ltd.

Surface graphenization of a metallic or metallized reinforcement by flame spray pyrolysis

A process for depositing, with forward progression, graphene on the surface of a metallic or metallized continuous reinforcer, at the periphery of which is positioned a layer of surface metal chosen from copper, nickel and copper/nickel alloys, comprises at least one stage of flame spray pyrolysis (“fsp”), under a reducing atmosphere, of a carbon precursor which generates, in the flame, at least one carbon-based gas such as carbon monoxide which is sprayed onto the surface of the reinforcer in forward progression, and is decomposed thereon to form one or more graphene layers at the surface of the surface metal; an additional stage of graphene functionalization makes it possible to adhere the reinforcer to a polymer matrix such as rubber.. .
Compagnie Generale Des Etablissements Michelin

A specific oligonucleotide aptamer for the identification of t-2 toxin

This invention provides a small molecule oligonucleotide aptamer binding to t-2 toxin specifically, and the sequence of the ssdna aptamer is seq id no: 1. Through the graphene oxide separation-based systematic evolution of ligands by exponential enrichment, single-stranded oligonucleotide aptamer with high affinity and specific identification of t-2 toxin was obtained in vitro selection.
Jiangnan University

Method for graphene and carbon nanotube growth

A layer stack for growing graphene or carbon nanotubes (cnts) is described. The layer stack comprises a substrate, a protective layer, and an attachment surface disposed therebetween.
University Of Surrey

Low friction wear resistant graphene films

A low friction wear surface with a coefficient of friction in the superlubric regime including graphene and nanoparticles on the wear surface is provided, and methods of producing the low friction wear surface are also provided. A long lifetime wear resistant surface including graphene exposed to hydrogen is provided, including methods of increasing the lifetime of graphene containing wear surfaces by providing hydrogen to the wear surface..
Uchicago Argonne, Llc

System and transportation and desalination of a liquid

The improved liquid transportation and desalination system transports seawater or other saline liquids through a piped distribution system with essentially no moving parts by relying on mhd principles. A fluid pump device comprised of high-strength permanent magnets forming chambers through which the liquid passes and inter-chamber opposing electrode plates with an applied dc potential provide the magnetic flux density and electric current for generating the lorentz forces acting on the liquid.
Mhd Technology Corporation

Phase change material temperature control device, system and method

In accordance with one embodiment of the present invention, the invention comprises a pliable enclosure containing a phase change material (pcm) that maintains a nearly constant predetermined temperature while transmitting heat during phase change. The predetermined temperature is maintained which the pcm absorbs heat from the body of the patient, thus maintain the patient's body temperature at a nearly constant predetermined temperature for as long as the pcm material is transitioning phase.
Imanano, Inc.

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.

Conductor including nano-patterned substrate and manufacturing the conductor

A conductor including a graphene layer and a method of manufacturing the conductor are provided. The conductor may further include a nano pattern disposed on a substrate, and the graphene layer may be formed on the nano pattern.
Korea Advanced Institute Of Science And Technology

Heat-dissipating copper foil and graphene composite

A method of producing a composite heat dissipating structure by depositing a slurry of graphene particles upon a copper foil, drying the slurry to form a layer of graphene in contact with the copper foil, and consolidating the layer of graphene under pressure to reduce the thickness of the graphene layer and recovering the composite heat dissipating structure. Heat dissipating copper foils and composite heat dissipating structures and electronic devices incorporating the same are also disclosed herein..
Chang Chun Petrochemical Co., Ltd.

Carbon fiber composition including graphene nano-powder and fabrication carbon fiber using the same

The present disclosure relates to a carbon fiber composition and a fabrication method for high-performance carbon fiber using the same. The method can fabricate high-performance carbon fiber (or graphite fiber) with lowering a graphitization temperature by using graphene carbon fiber composition including nano-sized graphene..
Korea Institute Of Science And Technology

Process for producing unitary graphene matrix composites containing carbon or graphite 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..

Method for preparing carbon nanotubes graphene modified aqueous polyurethane coatings and adhesives

The present invention discloses a method for preparing carbon nanotubes graphene modified aqueous polyurethane coatings and adhesives: under the presence of dibutyltin dilaurate as catalysts, mixing polytetrahydrofuran ether glycol with isophorone diisocyanate, reacting at 60° c. To 80° c., adding 2-sulfobenzoic anhydride, carboxylated carbon nanotubes and graphene sheet into the mixture, reacting at 90° c.
Yantai University

Methods for synthesizing graphene from a lignin source

Processes, methods, and compositions for synthesizing carbon-based materials are provided. The method of synthesizing carbon-based materials includes providing precursors, forming carbon-encapsulated metal structures from the precursors, and forming nano-shell structure-based graphene materials from the carbon-encapsulated metal structures.
The United States Of America As Represented By The Secretary Of Agriculture

Apparatus and plasma synthesis of graphitic products including graphene

Apparatus and method are disclosed for plasma synthesis of graphitic products including graphene. A plasma nozzle is coupled to a reaction chamber.
Fgv Cambridge Nanosystems Limited

Water separation composite membrane

And a selective layer disposed on the porous carrier, wherein the selective layer consists of a plurality of graphene oxide layers.. .

Water separation composite membrane

And a selective layer disposed on the porous carrier, wherein the selective layer consists of a plurality of graphene oxide layers.. .

Graphene-coated metal oxide spinel cathodes

Disclosed herein are graphene-coated lithium manganese oxide spinels cathodes for high-performance batteries li-ion batteries and methods for making thereof. A single-layer graphene coating is shown to significantly reduce manganese loss in the cathodes while concurrently promoting the formation of a well-defined solid electrolyte interphase layer..
Uchicago Argonne, Llc

Hole blocking, electron transporting and window layer for optimized culn (1-x)ga(x)se2 solar cells

Thin-film photovoltaic devices and methods of their use and manufacture are disclosed. More particularly, polycrystalline cuin(1-x)gaxse2 (cigs) based thin-film photovoltaic devices having independently tunable sublayers are disclosed.
The Research Foundation For The State University Of New York

Photoelectronic device using hybrid structure of silica nano particles - graphene quantum dots and manufacturing the same

Disclosed are a photoelectronic device using a hybrid structure of silica nanoparticles and graphene quantum dots and a method of manufacturing the same. The photoelectronic device according to the present disclosure has a hybrid structure including graphene quantum dots (gods) bonded to surfaces of silica nanoparticles (snps), thereby increasing energy transfer efficiency..
University-industry Cooperation Group Of Kyung Hee University

Graphene-based magnetic hall sensor for fluid flow analysis at nanoscale level

A method of detecting a particle comprises magnetizing a particle using an ac magnetic field; generating an ac voltage in a sensing device having a conductive substantially 2-dimensional lattice structure from the magnetized particle; superimposing a dc magnetic field on the generated ac voltage in the sensing device; and measuring an ac hall voltage at the sensing device.. .
International Business Machines Corporation

Microwave induced curing of nanomaterials for geological formation reinforcement

Embodiments of the present disclosure pertain to methods of forming a polymer composite by exposing a solution that includes nanomaterials (e.g., functionalized graphene nanoribbons) and cross-linkable polymer components (e.g., thermoset polymers and monomers) to a microwave source, where the exposing results in the curing of the cross-linkable polymer component in the presence of the nanomaterial to form the polymer composite. The solution may be exposed to a microwave source in a geological formation such that the formed polymer composite becomes embedded with the geological formation and thereby enhances the stability of the geological formation.
M-i, L.l.c.

Method of preparing of natural graphene cellulose blended meltblown nonwoven fabric

This application describes a method of preparation of a natural graphene cellulose blended meltblown nonwoven fabric, which comprises using a graphite powder as a raw material for preparing a graphene solution, adding the graphene solution to a slurry formed by mixing and dissolving a wood pulp with n-methylmorpholine n-oxide (nmmo), removing the water content thereof to form a spinning dope, and then directly preparing the natural graphene cellulose blended meltblown nonwoven fabric by a meltblown process. The present method does not require a highly toxic hydrazine hydrate solution.
Acelon Chemicals And Fiber Corporation

Method of preparing of natural graphene cellulose blended spunbond nonwoven fabric

This application describes a method of preparation of a natural graphene cellulose blended spunbond nonwoven fabric, which comprises using a graphite powder as a raw material for preparing a graphene solution, adding the graphene solution to a slurry formed by mixing and dissolving a wood pulp with n-methylmorpholine n-oxide (nmmo), removing the water content thereof to form a spinning dope, and then directly preparing the natural graphene cellulose blended spunbond nonwoven fabric by a spunbond process. The present method does not require a highly toxic hydrazine hydrate solution.
Acelon Chemicals And Fiber Corporation

Method of preparing natural graphene cellulose blended fiber

This application describes a method of preparation of a natural graphene cellulose blended fiber, which comprises using a graphite powder as a raw material for preparing a graphene solution, adding the graphene solution to a slurry formed by mixing and dissolving a wood pulp with n-methylmorpholine n-oxide (nmmo), removing the water content thereof to form a spinning dope, and then spinning the spinning dope by a dry-jet wet method to manufacture a natural graphene cellulose blended fiber. The present method does not require a highly toxic hydrazine hydrate solution.
Acelon Chemicals And Fiber Corporation

Device for depositing nanotubes

A device is provided for depositing carbonaceous structures, for example layers in the form of nanotubes or graphene on a substrate, which is supported by a substrate support disposed in a process chamber housing. A process gas can be delivered onto the substrate through gas outlet openings of a gas inlet element disposed in the process chamber housing.
Aixtron Se

Functionalized particles for label-free dna impedimetric biosensor for dna and rna sensing

In one embodiment, 3-aminopropyltriethoxysilane (aptes) functionalized graphene oxide (aptes-go) wrapped sio2 particle composite (sio2@aptes-go) was prepared via the self-assembly process of aptes-go sheets and sio2 particles. Transmission electron microscopy (tem) and attenuated total reflectance-fourier transform infrared spectroscopy (atr-ftir) confirmed wrapping of the sio2 particles by the aptes-go sheets.
Purdue Research Foundation

Manufacture graphene based resin pellet and manufacture conductive seal

The present invention provides a manufacture method of a graphene based resin pellet and a manufacture method of conductive seal. The present invention provides a manufacture method of a graphene based resin pellet, which employs green environmental protection flashing light for deoxidizing graphene oxide with an exposure method.
Shenzhen China Star Optoelectronics Technology Co. , Ltd.

Reduced graphene oxide barrier materials

This invention relates to barrier materials comprising reduced graphene oxide, methods of making said materials and their uses. The reduced graphene oxide is preferably formed from the reduction of graphene oxide by hi, hbr or ascorbic acid..
The University Of Manchester

Porous membrane structures and related techniques

A conductive porous fabric can be formed, such as by using a template material. The porous fabric can be conductive, such as thick enough to be self-supporting, or supported such as by another structure.

Method for manufacturing negative plate of secondary battery

The present invention provides a method for manufacturing a negative plate of a secondary battery, which includes the following steps: providing multiple sheets of functional graphene; compressing the functional graphene to form a graphene target; providing copper foil, and forming a microstructure on a surface of the copper foil, so as to strengthen attachment between a graphene layer and the copper foil; depositing the graphene target on the microstructure of the surface of the copper foil, to form the graphene layer; and repairing the graphene layer by using an excimer laser. The foregoing manufacturing method can greatly prolong a cycle life of the whole graphene cathode, and increase a reversible capacitance of a battery..
Metal Industries Research & Development Centre

Organic solar cell and preparation method thereof

An organic solar cell device is provided, including a first electrode, a photoactive layer, a hole transport layer, and a second electrode that are stacked successively. The photoactive layer includes an electron receptor material and an electron donor material.
Huawei Technologies Co., Ltd.

Graphene device and operating the same

A graphene device and a method of operating the same are provided. The graphene device includes: an active layer including a plurality of meta atoms spaced apart from each other, each of the meta atoms having a radial shape, and a graphene layer that contacts each of the plurality of meta atoms; and a dielectric layer covering the active layer..
Industry-academic Cooperation Foundation, Yonsei U Niversity

Image sensor and manufacturing the same

An image sensor includes a substrate that further includes a sensor array and a heat spreading layer on a surface of the substrate. The heat spreading layer may include one or more of a synthetic diamond layer, a graphene layer, or a diamond-like carbon (dlc) layer.
Samsung Electronics Co., Ltd.

Systems and methods for filtering and computation using tunnelling transistors

An electrical circuit is disclosed that comprises plurality of tunneling field-effect transistors (tfets) arranged in a diffusion network matrix having a plurality of nodes wherein, for each of the tfets that is not on an end of the matrix, a drain of the tfet is electrically coupled with the source of at least one of the other tfets at a node of the matrix and a source of the tfet is electrically coupled with the drain of at least one of the other tfets at another node of the matrix. The electrical circuit further comprises a plurality of capacitors, wherein a respective one of the plurality of capacitors is electrically coupled with each node that includes the source of at least one tfet and the drain of at least one tfet.
University Of Notre Dame Du Lac

Nanocomposite films with conducting and insulating surfaces

Nanocomposite films comprising conductive nanofiller dispersed throughout a polymer matrix and further comprising at least two surfaces with differing amounts of filler and differing electrical resistivity values are provided. In particular, nanocomposites comprising polyvinyl alcohol as the polymer matrix and nanosheets and/or nanoplatelets of graphene as the conductive filler are provided.
King Fahd University Of Petroleum And Minerals

Graphene coated silver alloy wire and methods for manufacturing the same

A graphene coated silver alloy wire is provided. The composite wire includes a core wire and one to three layers of graphene covering surfaces of the core wire.
Wire Technology Co., Ltd.

Electrochemical biosensor for metabolic disease of cattle

The present application relates to biosensors and methods for detecting and/or quantifying a target substrate. The biosensors comprise an electrode with a surface layer of tris-ruthenium bipyridine2+ complex modified graphene oxide and at least one enzyme linked to the surface layer..
University Of Guelph

Graphene-based multi-modal sensors

A method for fabricating a composite film structure, the method includes determining a desired morphology for a metallic layer of the composite film structure, selecting a first metal substrate based on the determining, transferring a graphene layer onto the first metal substrate, depositing the metallic layer on the graphene layer to achieve the desired morphology, and removing the first metal substrate from the graphene and the deposited metallic layer to form the composite film structure. A surface energy difference between the first metal substrate and the deposited metallic layer results in the desired morphology of the metallic layer..
The Regents Of The University Of California

Nanostructure and optical device including the nanostructure

Provided are a nanostructure and an optical device including the nanostructure. The nanostructure is formed on a two-dimensional material layer such as graphene and includes nanopatterns having different shapes.
Unist (ulsan National Institute Of Science And Technology)

Semiconductor device and formation

A semiconductor device and method of formation are provided. The semiconductor device includes a substrate, a first active area over the substrate, a second active area over the substrate, a graphene channel between the first active area and the second active area, and a first in-plane gate.
National Taiwan University

High optical transparent two-dimensional electronic conducting system and process for generating same

Hybrid transparent conducting materials are disclosed with combine a polycrystalline film and conductive nanostructures, in which the polycrystalline film is “percolation doped” with the conductive nanostructures. The polycrystalline film preferably is a single atomic layer thickness of polycrystalline graphene, and conductive nanostructures preferably are silver nanowires..
Purdue Research Foundation

Graphene quantum dot-polymer composites and methods of making the same

Various embodiments of the present disclosure pertain to methods of forming polymer composites that include polymers and graphene quantum dots. The methods occur by mixing a polymer component (e.g., polymers, polymer precursors and combinations thereof) with graphene quantum dots.
William Marsh Rice University

Sorting two-dimensional nanomaterials by thickness

The present teachings provide, in part, methods of separating two-dimensional nanomaterials by atomic layer thickness. In certain embodiments, the present teachings provide methods of generating graphene nanomaterials having a controlled number of atomic layer(s)..
Northwestern University

Large scale production of thinned graphite, graphene, and graphite-graphene composites

Embodiments described herein relate generally to large scale synthesis of thinned graphite and in particular, few layers of graphene sheets and graphene-graphite composites. In some embodiments, a method for producing thinned crystalline graphite from precursor crystalline graphite using wet ball milling processes is disclosed herein.
Group Nanoxplore Inc.

Graphene film and manufacturing method thereof

A graphene film and a manufacturing method thereof are disclosed. A polymer solution and graphene flakes (such as graphene powder) are mixed to form liquid graphene.
Chung Yuan Christian University

Method of mass producing few-layer graohene powders

The present invention relates to a method for producing few-layer graphene powders. An electrolytic solution is introduced as a coagulation floating agent wherein graphene is able to be suspended thereon, which prevent the graphene from coacervation..
Shandong Yuhuang New Energy Tethnology Co., Ltd

Electronic preamplifier system

A graphene microphone preamplifier is a minimalist design working in class a with large quiescent current in a push-pull configuration, with automatic balancing of voltage imbalance.. .

Signal cable and its application

The present invention is a signal cable for transmitting the signal between the transmitter and the receiver, providing an electrical connection by a connecting part, wherein said connecting portion comprises a layer of graphene disposed on a polymer layer, characterised in that it comprises two conductors, wherein each conductor includes a connecting portion arranged in a protective insulating layer (3) and the coupling portion takes the form of a tape, in which the graphene layer (1) is disposed between two polymer layers (2).. .

Method for manufacturing storage battery electrode

A storage battery electrode with high capacity is stably manufactured with the use of a strongly basic active material. The basicity of a mixture of a strongly basic active material and graphene oxide, the mixture subjected to heat treatment, or the mixture subjected to reduction by addition of a reducing agent is measured.
Semiconductor Energy Laboratory Co., Ltd.

Josephson junction readout for graphene-based single photon detector

A detector for detecting single photons of infrared radiation or longer wavelength electromagnetic radiation. In one embodiment a waveguide configured to transmit infrared radiation is arranged to be adjacent a graphene sheet and configured so that evanescent waves from the waveguide overlap the graphene sheet.
Raytheon Bbn Technologies Corp.

Hybrid interconnect structure and electronic device employing the same

A hybrid interconnect structure includes a graphene layer between a non-metallic material layer and a metal layer, and a first interfacial bonding layer between the non-metallic material layer and the graphene layer, or the metal layer and the graphene layer. The graphene layer connects the non-metallic material layer and the metal layer, and the first bonding layer includes a metallic material..
Samsung Electronics Co., Ltd.

Graphene capacitor, particularly for audio systems, and its use

Embodiments of the present invention provide a capacitor that includes two electric cladding elements with at least one graphene layer. The two electric cladding elements are separated by a layer of electrically insulating polymer.

Tester for detecting graphene security element in a security document, and the element detection method

A tester is described for detecting a graphene security element in a secure document, such as a banknote, an identification card, etc. As well as a method for detection of that element.

Security feature against forgery, in particular for high-value products, product authentication method and product authentication system

The present invention is a security feature against counterfeiting, in particular for high-value products, having a graphic code disposed on a graphene nanocomposite material layer, the graphene nanocomposite material layer having at least one layer of graphene (g-dg) disposed on an adhesive layer (p), preferably a polymer. The invention also includes a system and method for authenticating a product using such a feature..

Graphene touch sensor, operating same, and manufacturing same

A graphene touch sensor is provided. The graphene touch sensor includes a first substrate, a first pattern disposed on the first substrate and having a first protruding region and a first concave region, a second substrate on the first substrate, a second pattern disposed on the second substrate to face the first pattern and having a second protruding region and a second concave region, and a graphene layer between the first pattern and the second pattern..
Iucf-hyu (industry-university Cooperation Foundation Hanyang University)

Euv pellicle film and manufacturing method thereof

Provided is a pellicle film used for protecting an euv lithographic mask including a first layer, a second layer, and a layered material. The second layer is formed on the first layer.
G-force Nanotechnology Ltd.

Security element against counterfeiting security printing, especially banknotes

The present invention is a security feature against counterfeiting security printing, in particular banknotes, having at least one graphene quantum dot (gqd) that has a graphene nanoparticle diameter ranging from 0.5 nm to 60 nm, and containing from 1 to 90 layers of graphene disposed in the flexible layer of graphene nanocomposite material, where the elastic layer of graphene nanocomposite material comprises at least one layer of graphene arranged on the adhesive layer. The invention also includes the use of the security feature according to the invention, and a method and system for verifying the authenticity of security printing..

Method for obtaining a composite coating on titanium implants for tissue engineering

A composite coating and method for preparing the composite coating on titanium implants for tissue culture and tissue engineering is provided. The implants are characterized in that the titanium component to be coated is placed in a aqueous solution containing calcium cations, phosphate anions, and dispersed carbon nanoparticles (such as single layer graphene oxide or graphene oxide) in an amount of about 0.05%-1.50% by weight relative to the total weight of aqueous solution.
Warsaw University Of Technology

Method of manufacturing large area graphene and graphene-based photonics devices

The present invention relates to a method of manufacturing large area graphene for graphene-based photonics devices such as bolometric graphene detectors, or for use as a saturable absorber in ultra-high bandwidth detectors for producing ultrafast laser pulses. The method includes: growing a first graphene layer on one side of a metal substrate, and a second graphene layer on another side of the metal substrate; coating the first graphene layer with a plurality of resist layers including a low molecular weight polymethylmethacrylate, and a high molecular weight polymethylmethacrylate; removing the second graphene layer and the metal substrate to reveal the first graphene layer; disposing the first graphene layer on an optical substrate; and removing the plurality of resist layers from the first graphene layer to reveal a final graphene layer, which can be used as the basis to manufacture a multilayer graphene structure for graphene detectors..
U.s.a. Represented By The Administrator Of The National Aeronautics And Space Administration

Lubrication material using self-dispersed crumpled graphene balls as additives in oil for friction and wear reduction

A method for forming a lubrication material using self-dispersed crumpled graphene balls as additives in a lubricant base fluid for friction and wear reduction. The lubricant base fluid may be, for example, a polyalphaolefin type-4 (pao4) oil.
Northwestern University

Polycyclic aromatic hydrocarbon functionalized isobutylene copolymers for dispersing graphene and graphite

Polycyclic aromatic hydrocarbon (pah) functionalized isobutylene copolymers, methods for making a pah functionalized isobutylene copolymer comprising combining a halogenated copolymer with a pah in a solvent under basic conditions at a temperature ranging from 30° c. To 150° c., the use of these pah functionalized copolymers as a dispersant in elastomeric nanocomposite compositions comprising a halobutyl rubber matrix and nanoparticles of graphite or graphene, and a tire innerliner or innertube produced from these elastomeric nanocomposite compositions is disclosed..
Exxonmobil Chemical Patents Inc.

Carbon nanosheets

A combined hydrothermal and activation process that uses hemp bast fiber as the precursor to achieve graphene-like carbon nanosheets, a carbon nanosheet including carbonized crystalline cellulose, a carbon nanosheet formed by carbonizing crystalline cellulose, a capacitative structure includes interconnected carbon nanosheets of carbonized crystalline cellulose, a method of forming a nanosheet including carbonizing crystalline cellulose to create carbonized crystalline cellulose. The interconnected two-dimensional carbon nanosheets also contain very high levels of mesoporosity..
The Governors Of The University Of Alberta

Nanoparticle compositions and methods of making and using the same

Water soluble graphene oxide nanoparticles (go) are provided having graphene sheets containing carboxylic and hydroxyl groups. The diameter of the go when present in a closed form ranges from about 40 nm to 120 nm.
Cromoz, Inc.

Composite nanostructures having a crumpled graphene oxide shell

Composite nanostructures having a crumpled graphene oxide shell and a nanoparticle selected from titanium dioxide, silver and magnetite within the shell are disclosed. The nanostructures may be incorporated into a filtration membrane suitable for purifying water for targeted separations and for human consumption..
Washington University

Process of forming electrodes and products thereof from biomass

A flexible electrode comprises an activated cotton textile composite comprising activated carbon fibers, nickel sulfide nanoparticles and graphene and a process for making the flexible electrode. The process may comprise preparing a cotton textile containing ni(no3)2.
University Of Virginia Patent Foundation

Graphene-based valley filter and operating the same

A graphene-based valley filter includes a bottom gate, a bilayer graphene and two top gates. The bilayer graphene is deposited on the bottom gate and includes scattering defects.
National Tsing Hua University

Semiconductor device with graphene encapsulated metal and method therefor

A method for forming a semiconductor structure includes forming a first metal layer over a first dielectric layer, forming a first graphene layer on at least one major surface of the first metal layer, and forming a second dielectric layer over the first metal layer and the first graphene layer. The method further includes forming an opening in the second dielectric layer which exposes the first metal layer, forming a second metal layer over the second dielectric layer and within the opening, and forming a second graphene layer on at least one major surface of the second metal layer, wherein the second graphene layer is also formed within the opening..
Freescale Semiconductor, Inc.

Electron emitting device using graphene and manufacturing same

Disclosed are an electron emitting device using graphene and a method for manufacturing the same. The electron emitting device includes a metal holder having at least one slot, at least one emitter plate inserted into the slot to protrude from a first surface of the metal holder, and including an emitter supporting member and a graphene emitter attached onto the emitter supporting member, an insulation layer provided on the first surface of the metal holder, and a gate electrode provided on the insulation layer and including a gate supporting member and a graphene gate attached onto the gate supporting member..
Kumoh National Institute Of Technology Industry- Academic Cooperation Foundation

Method for producing a nano-gap in a brittle film assisted by a stabilizing substrate

This application discloses a method for developing a conductive nano-gap. The first step can comprise depositing a brittle material on a substrate.

Method for detecting l-tyrosine by using graphene-modified graphite pencil electrode system

A graphene-modified graphite pencil electrode (gpe) system and a method for detecting l-tyrosine in a solution. The electrode system includes a graphene-modified graphite pencil working electrode comprising a graphite pencil base electrode and a layer of graphene comprising wrinkled graphene sheets on the surface of the graphite pencil base electrode, a counter electrode, and a reference electrode.
King Fahd University Of Petroleum And Minerals

Electrode for an electrochemical gas sensor, manufacturing an electrode, and use of an electrode

An electrode (100) for an electrochemical gas sensor (1), wherein the electrode has a gas-permeable membrane (4). A graphene layer (3) is applied as an electrode material to the gas-permeable membrane (4).
Dräger Safety Ag & Co. Kgaa

Ultra-compact, passive, varactor-based wireless sensor using quantum capacitance effect in graphene

An electrical device includes at least one graphene quantum capacitance varactor. In some examples, the graphene quantum capacitance varactor includes an insulator layer, a graphene layer disposed on the insulator layer, a dielectric layer disposed on the graphene layer, a gate electrode formed on the dielectric layer, and at least one contact electrode disposed on the graphene layer and making electrical contact with the graphene layer.
Regents Of The University Of Minnesota





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