Ji-Hong Kim, Kyung-Ju Lee, Ji-Hyung Roh, Sang-Woo Song, Jae-Ho Park, In-Hyung Yer and Byung-Moo Moon*
* Corresponding author: Byung-Moo Moon byungmoo@korea.ac.kr
Nanoscale Research Letters 2012, 7:11 doi:10.1186/1556-276X-7-11