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Submitted on: 25 March 2004.
Revised on: 09 May 2004.
Accepted on: 02 July 2004.
___________________Journal of Nano Research---TRANS TECH PUBLICATIONS LTD
Submitted on: 26 September 2002.
Revised on: 05 November 2002.
Accepted on: 25 November 2002.
___________________Journal of Nano Research---TRANS TECH PUBLICATIONS LTD
Submitted on: 03 February 1998.
Revised on: 07 April 1998.
Accepted on: 09 May 1998.
___________________Journal of Nano Research---TRANS TECH PUBLICATIONS LTD
Submitted on: 15 February 2013.
Revised on: 28 April 2013.
Accepted on: 15 May 2013.
___________________Journal of Nano Research---TRANS TECH PUBLICATIONS LTD