Silicon chip speed record broken on a lead-coated track - tech - 16 July 2010 - New Scientist

Silicon chip speed record broken on a lead-coated track - tech - 16 July 2010 - New Scientist: "Yeom's team added an atom-thick layer of lead to the surface of a silicon block. Because the lead layer is so thin, the arrangement of its atoms is influenced by the silicon atoms underneath. The team suspected that the lead's electrons would, in turn, influence the electronic structure of the silicon at the interface."