
Researchers at IBM demonstrated a radio-frequency graphene transistor with the highest cut-off frequency achieved so far for any graphene device - 100 billion cycles/second (100 GigaHertz). Graphene is a single atom-thick layer of carbon atoms bonded in a hexagonal honeycomb-like arrangement. IBM said this two-dimensional form of carbon has unique electrical, optical, mechanical and thermal properties and its technological applications are being...