1. Department of Physics, Georgetown University, Washington, DC 20057, USA
2. Department of Computer Science, Vanderbilt University, Nashville, TN 37235, USA
3. Department of Physics, University of Louisville, Louisville, KY 40292, USA
4. Department of Food Science, University of Tennessee, Knoxville, TN, 37996, USA
5. Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA