1. School of Mechanical & Industrial Engineering University of Toronto Toronto ON M5S 3G8 Canada
2. Department of Mechanical Engineering McMaster University Hamilton ON L8S 4L7 Canada
3. NanoGenerators and NanoEngineering Laboratory School of Mechanical & Industrial Engineering University of Toronto Toronto ON M5S 3G8 Canada
4. Department of Chemistry University of Connecticut Storrs CT 06269 USA
5. Department of Surgery and Neag Cancer Center UConn Health Farmington CT 06032 USA
6. School of Chemistry National University of Ireland Galway H91 TK33 Ireland
7. Department of Mechanical and Aerospace Engineering and Research and Education in Energy Environment & Water (RENEW) Institute University at Buffalo The State University of New York Buffalo NY 14260 USA