Chorong Shin, James Manuel, Dul-Sun Kim, Ho-Suk Ryu, Hyo-Jun Ahn and Jou-Hyeon Ahn*
* Corresponding author: Jou-Hyeon Ahn jhahn@gnu.ac.kr
Nanoscale Research Letters 2012, 7:73 doi:10.1186/1556-276X-7-73