Abstract: A method for producing graphene includes: a pretreatment process of drying and pulverizing a vegetable material to obtain a carbon source; a carbonization process of carbonizing the carbon source to obtain a carbide; and a purification process of removing an impurity containing silica from the carbide obtained in the carbonization process, wherein the carbonization process including a heating process of supplying an inert gas into a chamber and heating the carbon source in the chamber in a plasma atmosphere.

Abstract: A method for producing amorphous silica includes: a pretreatment process of pulverizing vegetable material to obtain a silica source; a burning process of burning the silica source and extracting silica; and a purification process of removing carbon from burning material obtained in the burning process. The burning process includes a heating process of supplying an inert gas into a chamber and heating the silica source in the chamber in a plasma atmosphere.

Abstract: A method for producing graphene includes: a pretreatment process of drying and pulverizing a vegetable material to obtain a carbon source; a carbonization process of carbonizing the carbon source to obtain a carbide; and a purification process of removing an impurity containing silica from the carbide obtained in the carbonization process, wherein the carbonization process including a heating process of supplying an inert gas into a chamber and heating the carbon source in the chamber in a plasma atmosphere.

Abstract: A thermal interface material, a method for preparing a thermal interface material, a thermally conductive pad, and a heat dissipation system are provided. In one example, the thermal interface material includes a metal zirconium coil and carbon nanotube arrays, where the metal zirconium coil has a first surface and a second surface that is opposite to the first surface. The carbon nanotubes in the carbon nanotube arrays are distributed on the first surface and the second surface. Further, the first surface and the second surface of the metal zirconium coil include exposed metal zirconium. Therefore, interface thermal resistance of the thermal interface material is reduced, and a heat conducting property of the thermal interface material is improved.

Abstract: An optical member related to the present application includes a metal substrate or inorganic carbon substrate having a rough surface on at least a part, and the metal substrate or inorganic carbon substrate does not melt at a growth temperature of a carbon nanostructure, an inorganic material layer containing inorganic fine particles comprised from a metal oxide and the inorganic material layer being formed on the rough surface of the metal substrate or the inorganic carbon substrate; a catalyst metal fine particle layer supported on the inorganic material layer; and a carbon nanostructure formed on the catalyst metal fine particle layer. The material of the metal substrate may be a metal selected from a group comprising of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Pd, Pt, Cu, Au and Ag or an alloy of these as a main component, an isotropic graphite or glassy carbon.