Thursday, September 27, 2012

Observation of intermediate template directed SiC nanowire growth in Si–C–N systems

Min Xia, Shize Yang, Hongyan Guo, Wei Hao, Qingzhi Yan and Changchun Ge



SiC nanowires (NWs) are commonly prepared in a Si–C–N system, but its formation mechanism is not fully understood. High resolution transmission electron microscopy and electron energy loss spectroscopy observation recorded the growth process of how Si 3 N 4 NWs were transformed into SiC NWs, and demonstrated the validity of an intermediate template directed SiC NW growth via carbothermal reduction of intermediate Si 3 N 4 NWs in a Si–C–N system. Based on this discovery, an intermediate-template growth mechanism of SiC NWs was proposed.



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