Submitted on: 24 July 1998.
Revised on: 19 August 1998.
Accepted on: 08 September 1998.
___________________IEEE TRANSACTIONS ON NANOTECHNOLOGY
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Submitted on: 04 April 2016.
Revised on: 28 April 2016.
Accepted on: 01 June 2016.
___________________IEEE TRANSACTIONS ON NANOTECHNOLOGY
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