Growth of Group IV nanowires with a substrate and a Group IV metalloid is performed using resistive or inductive heating of the substrate. A roll-to-roll process enables a metal surface to move through a reaction environment while reacting with a stream or bath of precursor to form the nanowire-metal complex. The Group IV nanowires on a surface of the substrate can have a surface loading greater than 10 mg/cm.sup.2.
STATEMENT REGARDING FEDERALLY-SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with government support under Grant Number DE-FG02-87ER45298 awarded by the Department of Energy. The government has certain rights in the invention.