Jinxia Xu, Xiangheng Xiao*, Andrey L Stepanov, Fen Ren, Wei Wu, Guangxu Cai, Shaofeng Zhang, Zhigao Dai, Fei Mei and Changzhong Jiang*
* Corresponding authors: Xiangheng Xiao xxh@whu.edu.cn - Changzhong Jiang czjiang@whu.edu.cn
Nanoscale Research Letters 2013, 8:73 doi:10.1186/1556-276X-8-73
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