Yasuhiko Hayashi*, Tomoharu Tokunaga, Toru Iijima, Takuya Iwata, Golap Kalita, Masaki Tanemura, Katsuhiro Sasaki and Kotaro Kuroda
* Corresponding author: Yasuhiko Hayashi hayashi.yasuhiko@nitech.ac.jp
Nanoscale Research Letters 2012, 7:448 doi:10.1186/1556-276X-7-448
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