Xiaoxu Ji, Xintang Huang*, Jinping Liu, Jian Jiang, Xin Li, Ruimin Ding, Yingying Hu, Fei Wu and Qiang Li
* Corresponding author: Xintang Huang Volitation2009@163.com
Nanoscale Research Letters 2010, 5:649-653 doi:10.1007/s11671-010-9529-x
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