title: Diameter control of tungsten oxide nanowires as grown by thermal evaporation.
abstract: Tungsten oxide nanowires with controllable diameter were synthesized on Si substrates by thermal evaporation of tungsten trioxide powder in a tube furnace. Depending on the temperature of the source (900-1000 °C), tungsten oxide W(18)O(49) nanowires with diameters ranging from 10 to 100 nm are obtained with high yield. The exponential dependence of the nanowire diameter on the source temperature leads to an energy of about 2.0 eV. The growth process is discussed; it is believed to be a kinetic effect.
authors: Physics Department and the HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China.
authors: Kunquan
authors: K
authors: Hong
authors: Maohai
authors: M
authors: Xie
authors: Rong
authors: R
authors: Hu
authors: Huasheng
authors: H
authors: Wu