**About the Editors**

#### **Qiongfeng Shi**

Qiongfeng Shi has been a Research Fellow in the Department of Electrical and Computer Engineering at the National University of Singapore (NUS) since 2018. He received his B.Eng. degree from the Department of Electronic Engineering and Information Science at the University of Science and Technology of China (USTC) in 2012, and received his Ph.D. degree from the Department of Electrical and Computer Engineering at the National University of Singapore in 2018. His research interests include energy harvesters, nanogenerators, sensors, MEMS, wearable electronics, human-machine interfaces, and intelligent systems, etc. Dr. Shi has authored and co-authored more than 80 international journal papers and conference papers in his research fields, which have received more than 3200 citations with an H-index of 35 according to Google Scholar. Until now, Dr. Shi has served as a Guest Editor for several MDPI journals, and as a reviewer for multiple international journals.

#### **Huicong Liu**

Huicong Liu is currently a Professor with the Robotics and Microsystems Center, School of Mechanical and Electrical Engineering, Soochow University, China. She received the B.Eng. and M.Sc. Degrees from the Department of Mechanical Engineering, University of Science and Technology Beijing, China, in 2006 and 2008, respectively, and the Ph.D. degree from the Department of Mechanical Engineering, National University of Singapore (NUS), in 2013. She was a Research Fellow with the Department of Electrical and Computer Engineering, NUS, from 2012 to 2013. Her research interests are vibration-based MEMS/NEMS energy harvesters, self-powered MEMS/NEMS system for IoTs, flexible and intelligent sensing for human-machine interface. Prof. Liu has contributed 2 academic books, and more than 100 academic papers. Her work has been cited for more than 2800 times with H-index of 29. She was the co-chairman of the 2nd International Conference on Vibration Energy Harvesting (VEH 2019), TPC member of IEEE NEMS 2018-2019, 2021, and TPC member of Transducers 2021.
