09 November 2001
Vol 294, Issue 5545

About The Cover

Cover image expansion

COVER Carbon nanotube molecules lying on aluminum gates and coupled by gold wires. Field-effect transistors based on single nanotubes can now be assembled into the logic circuits that are the building blocks of computers. The realization of single-molecule logic circuits has been a long-standing goal within molecular electronics. 1317 [Image: TU Delft/Gripp]