Shuqing Huang, Huicheng Sun, Xiaoming Huang, Quanxin Zhang, Dongmei Li, Yanhong Luo and Qingbo Meng*
* Corresponding author: Qingbo Meng qbmeng@iphy.ac.cn
Nanoscale Research Letters 2012, 7:222 doi:10.1186/1556-276X-7-222
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