Wen-Hsiang Liao, Da-Hua Wei* and Chii-Ruey Lin*
* Corresponding authors: Da-Hua Wei dhwei@ntut.edu.tw - Chii-Ruey Lin crlin@ntut.edu.tw
Nanoscale Research Letters 2012, 7:82 doi:10.1186/1556-276X-7-82