Prof. Chi Zhang received his Ph.D. degree from Tsinghua University in 2009. After graduation, he worked in Tsinghua University as a postdoc fellow and NSK Ltd., Japan as a visiting scholar. He now is the principal investigator of Tribotronics Group in Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences. Prof. Chi Zhang's research interests are triboelectric nanogenerator, tribotronics, self-powered MEMS/NEMS, and applications in sensor networks, human-computer interaction and wearable electronics. He has been awarded by National Natural Science Foundation of China for Excellent Young Scientist Award. He has published over 120 papers and been cited for over 5000 times with an h-index of 40.