Graphene-graphite optical modulator
The present invention relates to a graphene-graphite optical modulator having an improved performance and, more particularly, to a graphene-graphite optical modulator in which information can be displayed by a graphene-graphite flake.
Publication number: WO2014175587A1 | Search similar patents
Graphene structure and method for producing same
A graphene structure is provided. The graphene structure comprises: a two-dimensional base graphene layer having a defect; and a linking material which is provided to the defect of the base graphene layer.
Publication number: WO2015190807A1 | Search similar patents
Method for manufacturing graphite oxide, and graphene structure material and method for preparing same
The present application provides: a method for manufacturing graphite oxide used as an intermediate for preparing a graphene structure material; a large-area graphene structure material with a large specific surface area, prepared using the graphite oxide; and a method for preparing the graphene structure material.
Publication number: WO2015167042A1 | Search similar patents
Graphene optical sensor
A method of using an optical sensor, the optical sensor comprising a sensing surface comprising graphene layer, the sensing surface located on a substrate, includes determining a first optical absorption spectrum for the graphene layer by a spectrophotometer; adding an analyte, the analyte selected to cause a shift in the first optical absorption spectrum, to the graphene layer; determining a second optical absorption spectrum for the modified graphene layer by a spectrophotometer; determining a shift between the first optical absorption spectrum and the second optical absorption spectrum; and determining a makeup of the analyte based on the determined shift.
Publication number: US2012069338A1 | Search similar patents
Graphene-containing slide ring
The invention relates to a slide ring of a mechanical seal arrangement, produced from a graphene-containing material (6).
Publication number: WO2015139881A1 | Search similar patents
Graphene, composition for preparing graphene, and method for preparing graphene using same
Disclosed are graphene, a composition for preparing the graphene, and a method for preparing the graphene using the same.
Publication number: WO2014104693A1 | Search similar patents
Method of producing highly dispersed graphene organic dispersion and application thereof
A highly dispersed graphene organic dispersion and an application thereof are provided. A mixture is firstly provided, which includes a graphite material and an organic solvent. And then, the mixture is subjected to a peeling process at high temperature and high pressure, thereby obtaining the highly dispersed graphene organic dispersion. The highly dispersed graphene organic dispersion contains 75% or more of a single-layered graphene.
Publication number: US2015158730A1 | Search similar patents
Method of using chemical reaction transparencyy of graphene
The present invention relates to a method of using chemical reaction transparency of graphene and, more specifically, to a method capable of forming a desired material through a catalytic reaction on a surface of graphene by utilizing the graphene which prevents the diffusion of oxygen without interfering with electron transport, and to an application method thereof.
Publication number: WO2016089164A2 | Search similar patents
Method for manufacturing graphene
In a method for manufacturing graphene, a graphene layer is formed on a base substrate, a target substrate is attached onto the graphene layer, and the graphene layer is separated from the base substrate so as to transfer the graphene layer onto the target substrate.
Publication number: WO2013129807A1 | Search similar patents
Apparatus and method for testing conductivity of graphene
According to the present invention, oxidized and reduced regions of graphene can be accurately detected in a short time using a terahertz wave so as to measure the conductivity of graphene, and thus the time required to test the conductivity of graphene can be reduced. In addition, when an oxidized region exists in graphene, the oxidized region can be immediately reduced by irradiating an electromagnetic wave thereto so as to increase the conductivity of graphene and thus minimize the time required to restore graphene.
Publication number: WO2015126111A1 | Search similar patents
Graphene material-based dispersive solid phase extraction method
A graphene material-based dispersive solid phase extraction method, comprising steps of performing pore-forming and activation on a graphene material, and obtaining an activated graphene material, the graphene material being graphene or modified graphene; and adding the activated graphene material to a chemical sample to be processed to obtain a mixture, and performing shaking and extraction on the mixture, the supernatant after centrifugal separation containing a target component to be detected. The method operates simply, and the separation effect is good.
Publication number: WO2016045030A1 | Search similar patents
Graphene transfer method and graphene transfer apparatus using vacuum heat treatment
Provided are a graphene transfer method and a graphene transfer apparatus. Specifically, the present invention provides a graphene transfer method and a graphene transfer apparatus that can carry out the same, the method comprising the steps of: manufacturing a graphene stack having a support substrate and graphene coupled to each other; and vacuum heat-treating the graphene stack and a transfer-target substrate so as to transfer the graphene of the graphene stack to the transfer-target substrate. Accordingly, the graphene transfer process is performed under the vacuum atmosphere so that elements causing doping between the graphene and the transfer-target substrate are removed, thereby transferring the graphene while maintaining the characteristic of the graphene. In addition, a bonding force between the graphene and the transfer-target substrate is increased by heat treatment when the graphene is transferred, thereby enhancing the graphene transfer state.
Publication number: WO2015102459A1 | Search similar patents
Graphene nanoribbon sensor
Provided is a graphene nanoribbon sensor. The sensor includes a substrate, a graphene layer formed on the substrate in a first direction, and an upper dielectric layer on the graphene layer. Here, the graphene layer may have a plurality of electrode regions respectively separated in the first direction and a channel between the plurality of electrode regions.
Publication number: US2014103296A1 | Search similar patents
Carbon based biosensors and processes of manufacturing the same
Sensors, processes for manufacturing the sensors, and processes of detecting a target molecule with the sensor generally includes a substrate including a channel and first and second electrodes electrically connected to the channel, wherein the channel includes a monolayer of surface functionalized graphene or surface functionalized carbon nanotubes, wherein the surface functionalized graphene or surface functionalized carbon nanotubes include an imidazolidone compound.
Publication number: US2014158551A1 | Search similar patents
Cvd-grown graphite nanoribbons
The nanoribbon structure includes a plurality of thin graphite ribbons having long and highly crystalline structure. A voltage is applied across the length of the thin graphite ribbons to cause current flow so as to increase crystallinity as well as establishing interplanar stacking order and well-defined graphene edges of the thin graphite ribbons.
Publication number: US2009226361A1 | Search similar patents