[6] The authors acknowledge the support from Air Force Office of Scientific Research (FA9550-14-1-0182) and National Science Foundation Graduate Research Fellowship (DGE-1252376). We thank analytical Instrumentation Facility (AIF) at North Carolina State University supported by the State of North Carolina, the National Science Foundation (ECCS-1542015) and the North Carolina Research Triangle Nanotechnology Network from the National Nanotechnology Coordinated Infrastructure.
Google Scholar