Jizong Zhang, Xin Hu, Jian Zhang, Yushang Cui, Changsheng Yuan, Haixiong Ge*, Yanfeng Chen, Wei Wu and Qiangfei Xia*
* Corresponding authors: Haixiong Ge haixiong@nju.edu.cn - Qiangfei Xia qxia@ecs.umass.edu
Nanoscale Research Letters 2012, 7:380 doi:10.1186/1556-276X-7-380
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