Xusheng Du*, Hong-Yuan Liu, Guipeng Cai, Yiu-Wing Mai* and Avinash Baji
* Corresponding authors: Xusheng Du xdu@usyd.edu.au - Yiu-Wing Mai yiu-wing.mai@sydney.edu.au
Nanoscale Research Letters 2012, 7:111 doi:10.1186/1556-276X-7-111