Changcheng Hu, Huiqi Ye, Gang Wang, Haitao Tian, Wenxin Wang, Wenquan Wang, Baoli Liu* and Xavier Marie*
* Corresponding authors: Baoli Liu blliu@iphy.ac.cn - Xavier Marie marie@insa-toulouse.fr
Nanoscale Research Letters 2011, 6:149 doi:10.1186/1556-276X-6-149
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