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Submitted on: 14 April 2015.
Revised on: 25 April 2015.
Accepted on: 04 May 2015.
Nanoscale Research Letters
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Submitted on: 05 September 2002.
Revised on: 03 October 2002.
Accepted on: 22 October 2002.
Nanoscale Research Letters
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Submitted on: 19 March 2022.
Revised on: 30 March 2022.
Accepted on: 13 April 2022.
Nanoscale Research Letters
Submitted on: 15 April 1999.
Revised on: 09 May 1999.
Accepted on: 21 May 1999.
Nanoscale Research Letters
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