مرکز منطقه ای اطلاع رساني علوم و فناوري

Abstract :

Graphene attracted great attention, after Andre Geim and Konstantin Novoselov were awarded the Nobel prize (2010) in Physics because of their “groundbreaking experiments” on the “miracle material” graphene. Graphene is a two dimensional nanomaterial, which has superior properties, and a layer of covalently bound carbon atoms arranged in a perfect honeycomb (hexagonal) lattice. The carbon-carbon bond length of graphene is approximately 0.142 nm.The electrons on the structure of graphene acts as massless particles and therefore, it causes unique properties like quantum hall effect. Some main properties of graphene are large surface area (2630 m2 g-1), high electron mobility (200,000 cm2/(V s), high thermal conductivity (5000 Wm-1K-1) and high young modulus (~1,100 Gpa). Because of its superior properties, graphene found applications in many areas such as transparent conductors, clean energy devices, sensors, nanocomposites and organic photovoltaic devices. In this study the production methods of graphene will be discussed.