Kyoseung Sim, Shi-Joon Sung*, Eun-Ae Jung, Dae-Ho Son, Dae-Hwan Kim, Jin-Kyu Kang and Kuk Y Cho
* Corresponding author: Shi-Joon Sung sjsung@dgist.ac.kr
Nanoscale Research Letters 2012, 7:46 doi:10.1186/1556-276X-7-46