Dr. Simiao Niu is a postdoctoral research fellow in Chemical Engineering, Stanford University, under the supervision of Dr. Zhenan Bao. He received his Ph.D. degree in School of Materials Science and Engineering at the Georgia Institute of Technology in May 2016, under the supervision of Dr. Zhong Lin Wang. He earned his master of science degree in Electrical and Computer Engineering at the Georgia Institute of Technology in 2015 and his bachelor of engineering degree in the Institute of Microelectronics at Tsinghua University in 2011 with the highest honors and outstanding undergraduate thesis award. His postdoctoral research interests include stretchable electronics and systems for personalized healthcare. In his doctoral research, his research focuses on theoretical and experimental studies on: mechanical energy harvesting by triboelectric nanogenerators and high-performance piezotronic and piezo-phototronic sensors based on piezoelectric nanowires.