Xianqi Wei*, Ranran Zhao, Minghui Shao, Xijin Xu* and Jinzhao Huang
* Corresponding authors: Xianqi Wei xqwei666@sohu.com - Xijin Xu sps_xuxj@ujn.edu.cn
Nanoscale Research Letters 2013, 8:112 doi:10.1186/1556-276X-8-112
Fields marked * are required