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Submitted on: 11 March 2005.
Revised on: 09 April 2005.
Accepted on: 27 April 2005.
Nanoscale Research Letters---SPRINGER HEIDELBERGN/A
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http://reply.papertrans.cn/3/226/22595/22595-34.png
Submitted on: 15 June 2014.
Revised on: 15 July 2014.
Accepted on: 30 July 2014.
Nanoscale Research Letters---SPRINGER HEIDELBERGN/A
Submitted on: 22 January 1998.
Revised on: 14 February 1998.
Accepted on: 23 February 1998.
Nanoscale Research Letters