Affiliation: | 1. Department of Physics, Auburn University, Auburn, AL, 36849, USA 2. Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA 3. Department of Chemistry, Columbus State University, Columbus, GA, 31907, USA 4. Electrical Engineering Department, Tuskegee University, Tuskegee, AL, 36088, USA
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