Yong-Il Jung, Bum-Young Noh, Young-Seok Lee, Seong-Ho Baek, Jae Hyun Kim* and Il-Kyu Park*
* Corresponding authors: Jae Hyun Kim jaehyun@dgist.ac.kr - Il-Kyu Park ikpark@ynu.ac.kr
Nanoscale Research Letters 2012, 7:43 doi:10.1186/1556-276X-7-43