Christopher Jameson Love;Kripa K. Varanasi;J. David Smith
发明人:
Christopher Jameson Love,J. David Smith,Kripa K. Varanasi
申请号：
US13363706
公开号：
US20120201759A1
申请日:
2012.02.01
申请国别(地区):
US
年份:
2012
代理人:
摘要：
Hierarchical nanostructures and methods of fabrication. The structures include particles having a metal oxide outer shell with metal oxide wires extending from the outer shell. A multiscale structure according to the invention has particles above and below a critical size wherein the particles above the critical size have wires extending from the surface. These structures may be fabricated from a mixture prepared of relatively smaller metal particles having a size threshold below a threshold for nanowire formation and of relatively larger metal particles having a size above the threshold for nanowire formation. The mixture is oxidized at a selected temperature and for a selected time whereby the relatively smaller particles sinter and nanowires grow on the relatively larger particles thereby creating tunable hierarchical structures with metal-to-metal contact between the particles.
