Graphene is a nearly transparent material that has the highest room temperature electrical conductivity of any known substance. Graphene’s atoms are arranged in a hexagonal arrangement. Although it is a mere one-atom thick, the first two-dimensional material, graphene is also one of the strongest materials in the known universe. With a tensile strength of 130 GPa , graphene is more than 200 times stronger than steel. On top of that, graphene is an excellent conductor of heat and electricity and has interesting light absorption abilities. Thus, scientists and engineers predict that many future applications can be realized using graphene, such as ultrahigh-speed transistors and transparent electrodes, touchscreens (for LCD or OLED displays), solar cells and so on.