Zai-xing Yang, Wei Zhong*, Yan-xue Yin, Xin Du, Yu Deng, Chaktong Au and You-wei Du
* Corresponding author: Wei Zhong wzhong@mail.nju.edu.cn
Nanoscale Research Letters 2010, 5:961-965 doi:10.1007/s11671-010-9589-y
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