Professor Chi Zhang received his PhD from Tsinghua University in 2009. After graduation, he worked at Tsinghua University as a postdoc research fellow and at NSK Ltd., Japan, as a visiting scholar. He is the principal investigator of the Tribotronics Group at the Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences (CAS), Fellow of the NANOSMAT Society, and a Member of the Youth Innovation Promotion Association, CAS. Prof. Chi Zhang’s research interests are triboelectric nanogenerators, tribotronics, self-powered MEMS/ NEMS, and applications in sensor networks, human-computer interaction and new energy technology. He received the National Science Fund Award for Excellent Young Scholars.