Sumalin Phokha, Supree Pinitsoontorn, Prae Chirawatkul, Yingyot Poo-arporn and Santi Maensiri*
* Corresponding author: Santi Maensiri santimaensiri@g.sut.ac.th
Nanoscale Research Letters 2012, 7:425 doi:10.1186/1556-276X-7-425
Fields marked * are required