1. a Department of Chemistry, Institute of Nanoscience and Technology , University of Massachusetts Lowell , Lowell, MA, 01854
2. b Division of Applied Chemistry, Graduate School of Engineering , Osaka University , Suita, Osaka, 565-0871, Japan
3. c Materials & Manufacturing Directorate, AFRL/RXBN, Air Force Research Laboratory , Wright-Patterson Air Force Base , Dayton, OH, 45433