Jingjing Jiang, Han Wang, Huaihong Guo, Teng Yang, Wen-Shu Tang, Da Li*, Song Ma, Dianyu Geng, Wei Liu and Zhidong Zhang
* Corresponding author: Da Li dali@imr.ac.cn
Nanoscale Research Letters 2012, 7:238 doi:10.1186/1556-276X-7-238
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