1. Interdisciplinary Materials Science Program Vanderbilt University Nashville TN 37212 USA
2. Photonics Initiative Advanced Science Research Center City University of New York New York NY 10031 USA
3. John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA 02138 USA
4. Department of Materials Science and Engineering University of Delaware Newark DE 19716 USA
5. Department of Mechanical Engineering Vanderbilt University Nashville TN 37212 USA
6. School of Physics and Astronomy Tel Aviv University Tel Aviv 69978 Israel