1. Department of Physics Florida A&M University Tallahassee FL 32307 USA
2. Department of Chemistry Virginia Commonwealth University Richmond VA 23284 USA
3. Institute for Problems of Chemical Physics of the Russian Academy of Sciences (ICP RAS) Semenov prospect 1 Chernogolovka 142432 Russia
4. Institute for Micromanufacturing Louisiana Tech University Ruston LA 71272 USA