1. College of Optics and Photonics,
CREOL, University of Central Florida, Orlando,
Florida 32816, United States
2. NanoScience Technology Center, University of Central Florida, Orlando, Florida 32826,
United States
3. Department
of Mechanical Engineering
and Materials Science, Rice University,
Houston, Texas 77005, United States
4. Department of Physics, Cochin University of Science and Technology, Kochi
682 022, India
5. Department
of Material Science
and Engineering, University of Central Florida, Orlando, Florida 32816, United States