BBC Focus Magazine

[Shadowwolf]

The smallest wires ever developed in silicon -- just one atom tall and four atoms wide -- have been shown by a team of researchers from the University of New South Wales, Melbourne University and Purdue University to have the same current-carrying capability as copper wires.

Experiments and atom-by-atom supercomputer models of the wires have found that the wires maintain a low capacity for resistance despite being more than 20 times thinner than conventional copper wires in microprocessors.

http://www.sciencedaily.com/releases/2012/01/120105161826.htm