1. Plasma Sources and Applications Center (PSAC), NIE; Nanyang Technological University; 1 Nanyang Walk 637616 Singapore Singapore
2. Plasma Nanoscience Laboratories, Industrial Innovation; CSIRO Manufacturing Flagship; P.O. Box 218 Lindfield NSW 2070 Australia
3. Institute for Future Environments and School of Chemistry, Physics, and Mechanical Engineering; Queensland University of Technology; Brisbane QLD 4000 Australia