Hyung Won Lee, Jong-Ki Jeon, Sung Hoon Park, Kwang-Eun Jeong, Ho-Jeong Chae and Young-Kwon Park*
* Corresponding author: Young-Kwon Park catalica@uos.ac.kr
Nanoscale Research Letters 2011, 6:500 doi:10.1186/1556-276X-6-500