Nantero Carbon Nanotube Memory
As reported here, Nantero is using carbon nanotubes (CNTs) for a mechanical-switch type non-volatile memory (NRAM). Ribbons of nanotubes are suspended between raised points on a substrate. Applying a voltage to an electrode beneath a CNT bridge, causes the nanotubes to bend downwards until in contact with the substrate. Due to van der Waals forces, the nanotubes remain in the bent position without any applied voltage. The resulting non-volatility is a big advantage, but apparently speed and memory density are also higher than for standard DRAM.
The Economist (May 2003) likes the technology, too.
[Update:] coverage by Nature (Oct. 2004), for those with access.
