What Is Graphene Material
Graphene is the thinnest and most powerful material found so far. Thin because graphene is composed of carbon atoms of the two-dimensional crystals, the thickness of only one atom. Although thin to the extreme but very dense, even the smallest atomic size of helium can not penetrate it.
What is graphene? Graphene is a honeycomb planar film formed by sp2 hybridization of carbon atoms. It is a quasi-two-dimensional material with only one atomic layer thickness, so it is also called monatomic layer graphite. Its thickness is about 0.335nm, according to the different ways of production there are different ups and downs, usually in the vertical direction of the height of about 1nm, horizontal width of about 10nm to 25nm, is in addition to all the carbon crystal (zero-dimensional fullerenes , One-dimensional carbon nanotubes, three-dimensional to graphite).
Long before there is a physicist in theory to predict, quasi-two-dimensional crystal itself thermodynamic nature of instability, at room temperature will be quickly decomposed or curled, so it can not exist alone.
Until 2004, the British University of Manchester physicist Andrei Gem and Constantine Novo Shuo Luofu, with micro-mechanical stripping method successfully separated from the graphite graphene, confirmed that it can exist alone, for graphene Of the research began to be active, the two also won the 2010 Nobel Prize in Physics.
The most promising application of graphene is the replacement of silicon, making ultra-miniature transistors for the production of future supercomputers. With graphene instead of silicon, the computer processor will run hundreds of times faster.
In addition, graphene is almost completely transparent, only absorb 2.3% of the light. On the other hand, it is very dense, even the smallest gas molecules (helium) can not penetrate. These features make it ideal for use as a transparent electronic product, such as a transparent touch screen, a light-emitting panel and a solar panel.
As a new type of nanomaterials with the strongest, strongest and most conductive conductivity, graphene is known as "black gold" and "king of new materials", scientists even predict that graphene will "completely change the 21st century " It is likely to set off a sweeping global disruptive new technology and new industrial revolution.