Hyung Bum An, Mi Jin Yu, Ji Man Kim, Mingshi Jin, Jong-Ki Jeon, Sung Hoon Park, Seung-Soo Kim and Young-Kwon Park*
* Corresponding author: Young-Kwon Park catalica@uos.ac.kr
Nanoscale Research Letters 2012, 7:7 doi:10.1186/1556-276X-7-7