Thanya Parametthanuwat, Sampan Rittidech*, Adisak Pattiya, Yulong Ding and Sanjeeva Witharana
* Corresponding author: Sampan Rittidech s_rittidej@hotmail.com
Nanoscale Research Letters 2011, 6:315 doi:10.1186/1556-276X-6-315
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