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Submitted on: 23 May 1999.
Revised on: 12 July 1999.
Accepted on: 23 August 1999.
___________________Journal of Experimental Nanoscience
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Submitted on: 23 July 2005.
Revised on: 29 October 2005.
Accepted on: 13 December 2005.
___________________Journal of Experimental Nanoscience
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Submitted on: 08 June 2019.
Revised on: 08 September 2019.
Accepted on: 26 October 2019.
___________________Journal of Experimental Nanoscience
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Submitted on: 17 April 2016.
Revised on: 11 May 2016.
Accepted on: 08 June 2016.
___________________Journal of Experimental Nanoscience
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