Nano-challenge: Molecular switch Team lays foundation for a
carbon-nanotube-based molecular gate In these visualizations of
a carbon nanotube, the F4-TCNQ molecule in the top image is
oriented sideways, blocking electric current. In the bottom
image the F4-TCNQ molecule is aligned with the length of the
nanotube, which would allow current through—thus, a switch.
Among the information technology wonders of the modern world,
most are based on one simple question: Is it on or is it off?
Two ORNL researchers, one specializing in theoretical physics,
the other in chemistry, have discovered a carbon nanotube-based
system that functions like an atom-scale switch. The Computer
Science & Mathematics Division researchers believe their work
could be laying the foundation for a binary bonanza. "The
semiconductor industry is always working against Moore's Law-the
finite capacity of a silicon chip to store information," says
Vincent Meunier, the physicist in the team. He's working with
CMSD chemist Bobby Sumpter. Their app