Cuifeng Zhou, Zongwen Liu*, Xusheng Du*, David RG Mitchell, Yiu-Wing Mai, Yushan Yan and Simon Ringer
* Corresponding authors: Zongwen Liu zongwen.liu@sydney.edu.au - Xusheng Du xdu@usyd.edu.au
Nanoscale Research Letters 2012, 7:165 doi:10.1186/1556-276X-7-165