Shuxi Dai, Yanqiang Wu, Toshio Sakai, Zuliang Du*, Hideki Sakai* and Masahiko Abe
* Corresponding authors: Zuliang Du zld@henu.edu.cn - Hideki Sakai hisakai@rs.noda.tus.ac.jp
Nanoscale Research Letters 2010, 5:1829-1835 doi:10.1007/s11671-010-9720-0