Submitted on: 20 May 2009.
Revised on: 06 June 2009.
Accepted on: 11 June 2009.
NULL
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http://reply.papertrans.cn/3/219/21881/21881-33.png
Submitted on: 25 January 2012.
Revised on: 07 February 2012.
Accepted on: 01 March 2012.
NULL
Submitted on: 27 December 2013.
Revised on: 23 January 2014.
Accepted on: 13 February 2014.
Micro and Nano Systems Letters
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