Jihyeon Gim, Jinju Song, Hyosun Park, Jungwon Kang, Kangkun Kim, Vinod Mathew and Jaekook Kim*
* Corresponding author: Jaekook Kim jaekook@chonnam.ac.kr
Nanoscale Research Letters 2012, 7:60 doi:10.1186/1556-276X-7-60