Duy-Cuong Nguyen, Souichirou Tanaka, Hitoshi Nishino, Kyohei Manabe and Seigo Ito*
* Corresponding author: Seigo Ito itou@eng.u-hyogo.ac.jp
Nanoscale Research Letters 2013, 8:8 doi:10.1186/1556-276X-8-8