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  1. APL_2011.pdf pdf

    Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

    The above article appeared in Applied Physics Letters, Volume 99, Issue 3 and may be found at http://link.aip.org/link/?APL/99/034104.

  2. APL_2012.pdf pdf

    Copyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

    The above article appeared in Applied Physics Letters, Volume 101, Issue 11 and may be found at http://link.aip.org/link/?APL/101/114105.