[1] Univ Southern Calif, Dept Elect Engn, Los Angeles, CA 90089 USA
[2] Univ Southern Calif, Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USA
[3] King Abdulaziz City Sci & Technol, Joint Ctr Excellence Program, Ctr Excellence Green Nanotechnol, POB 6086, Riyadh 11442, Saudi Arabia
[4] Univ Calif Los Angeles, Dept Elect Engn, 420 Westwood Plaza,5412 Boelter Hall, Los Angeles, CA 90095 USA