The Influence of Graphene Sheets Ionization on Their Structures

In order to investigate the influence of graphene ionization on its structure, it is necessary to first define some useful parameters. There are two kinds of bonds in the graphene sheet. One is "horizontal" (b1), the other is "vertical" (b2) (Figure 2). The model used in this document to define the structural parameters of the graphene sheet: "horizontal" (b1) and "vertical" (b2) coupling length. While measuring the length of the sheet the carbon atoms ended in black. For clarity, hydrogen atoms are omitted. Please note that we use these symbols to emphasize the fundamental difference between these bonds.

Graphene is the only form of carbon (or solid material) that each atom can chemically react from both sides (due to the 2D structure). The atoms at the edge of the graphene sheet have special chemical reactivity. Graphene has the highest percentage of edge atoms among allotropes. Sheet defects enhance their chemical reactivity. The reaction onset temperature between the base surface of monolayer graphene and oxygen is lower than 260 ° C. (530 K). Graphene burns at 350 ° C (620 K). Graphene is usually modified with oxygen containing and nitrogen containing functional groups and is analyzed by infrared spectroscopy and X-ray photoelectron spectroscopy. However, determining the structure of graphene with oxygen and nitrogen functional groups requires good control of its structure.

First, graphene is a monolayer of carbon atoms. Since this is a piece of paper, you can create circuits with graphene using many existing techniques. In addition, graphene is also a very good semiconductor, and it is possible to switch the transistor faster than any other material. The reality is not so optimistic. What are all these excellent attributes? They exist only in perfect graphene. However, it is impossible to make a perfect graphene sheet covering the entire area required for the chip. In fact, we can not even make incomplete graphene sheets on wafers used in integrated circuits.

In addition to the regular graphene sheet (as it faces, some of the graphene is difficult to use), since scientists have discovered graphene, scientists strive to divide graphene into several different forms I have the greatest potential in the vicinity. The future is three dimensional graphene, graphene airgel, bucky paper, graphene oxide. All of these materials have very different characteristics. 3D graphene has ten times the strength of graphene, but density is less than 95%, 3D printing is possible. This material also has the property that it becomes more stable as graphene becomes thinner. Scientists began studying the use of three-dimensional graphene to build bridges, cars, even filtration systems.