Abstract:
The present invention provides a method for n-doping graphene, an n-doped graphene prepared thereby, and an element including the n-dope graphene, the method comprising: a step of growing the graphene on a substrate by supplying a reaction gas containing a carbon source and heat on the substrate and reacting same; and n-doping the graphene by means of a doping solution or a vapor containing an n-type dopant.
Abstract:
The present application relates to a method for shielding electromagnetic waves by using graphene inside or outside an electromagnetic wave generating source and/or by using graphene formed on a substrate, and an electromagnetic shielding material including the graphene.
Abstract:
The present invention relates to a transparent graphene electrode, a flexible silicon thin film semiconductor device containing the same, and a preparation method thereof. A flexible and transparent thin film semiconductor device can be easily prepared by using the transparent graphene electrode comprising a large-area graphene film prepared by chemical vapor deposition as a conductive film.
Abstract:
Ultralong carbon nanotubes can be formed by placing a secondary chamber within a reactor chamber to restrict a flow to provide a laminar flow. Inner shells can be successively extracted from multi-walled carbon nanotubes (MWNTs) such as by applying a lateral force to an elongated tubular sidewall at a location between its two ends. The extracted shells can have varying electrical and mechanical properties that can be used to create useful materials, electrical devices, and mechanical devices.
Abstract:
The present invention relates to a method for transferring graphene using a hot press, comprising: a step of contacting graphene, having a heat-peelable sheet attached thereto, with a target substrate; and a step of pressing and heating the graphene having the heat-peelable sheet attached thereto and the target substrate using the upper press and lower press of a hot press so as to separate the heat-peelable sheet and the graphene and transfer the separated graphene to the target substrate. The present invention also relates to a graphene-transfer hot press apparatus for said transfer process.
Abstract:
A method and an apparatus for synthesizing graphene. The method includes loading catalyst metals into a chamber in the horizontal direction or the vertical direction; increasing sizes of grains of the catalyst metals by heating the catalyst metals; raising a temperature inside the chamber while providing a vapor carbon source in the catalyst metals; and forming graphene by cooling the catalyst metals.
Abstract:
The present invention relates to a method for forming a graphene protective film having gas and moisture barrier properties, to a graphene protective film formed by the method, and to the use thereof. A single-layer or multi-layer graphene protective film can be used as a material for a barrier coating or bags, and improves the gas and moisture barrier properties of a variety of devices in a wide array of industrial fields to thereby maintain the electrical characteristics of devices over a long period of time.
Abstract:
The invention relates to an optic fiber having a core in which carbon nano-structures are formed at a predetermined locus, a fiber optic chemical sensor using the optic fiber, and a method of forming the carbon nano-structure layer in the core of the optic fiber. The invention utilizes gas refractive index and the adsorption sensitivity of particles on the surface of the carbon nano-structure layer, and uses the carbon nano-structure layer in the core of the optic fiber as a sensor for particles of gas, liquid and the like.
Abstract:
Provided is a touch sensor for measuring a touch position and/or the degree of touching pressure by using graphin as an electrode and/or a strain gauge, and more particularly, to a touch sensor for simultaneously detecting pressure and position by means of change in resistance by using the graphin.
Abstract:
The present invention relates to a method for forming graphene at a low temperature, to a method for direct transfer of graphene using same, and to a graphene sheet. The method for forming graphene at a low temperature comprises supplying a carbon-source-containing gas to a metal catalyst layer for graphene growth formed on a substrate, and forming graphene at a low temperature of 500°C or less by means of inductively coupled plasma-chemical vapor deposition (ICP-CVD).