Yan Zhao, Chunlan Zhou*, Xiang Zhang, Peng Zhang, Yanan Dou, Wenjing Wang, Xingzhong Cao, Baoyi Wang, Yehua Tang and Su Zhou
* Corresponding author: Chunlan Zhou zhouchl@mail.iee.ac.cn
Nanoscale Research Letters 2013, 8:114 doi:10.1186/1556-276X-8-114