1. Polymer Science Group, Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
2. International Business Machines—Almaden Research Center, 650 Harry Road, San Jose, California 95110, United States
3. Department of Electrical and Electronic Engineering, University of Cagliari, via Marengo, 09123 Cagliari, Italy
4. The Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007 Australia