Yongke Yan 1, 2, Jie E. Zhou 3, Deepam Maurya 1, Shashank Priya 1, 2
1 Center for Energy Harvesting Materials and Systems (CEHMS), Virginia Tech, Blacksburg, United States, 2 Institute for Critical Technology and Applied Science (ICTAS), Virginia Tech, Blacksburg, United States, 3 Department of Materials Science and Engineering, Michigan Tech, Houghton, United States