People – XU Wanghuai's Group

Prof. XU Wanghuai

Dr. Xu Wanghuai received his PhD degrees from City University of Hong Kong and University of Science and Technology of China in 2020, after which he worked as a postdoctoral fellow (under the RGC postdoctoral fellowship scheme) in the Department of Mechanical Engineering at City University of Hong Kong. In November 2022, he joined the Department of Mechanical Engineering at The Hong Kong Polytechnic University as an RGC postdoctoral fellow and then was appointed as an Assistant Professor in the Department of Electrical and Electronic Engineering in August 2023.

Over the past several years, he has published more than 40 papers in Journals such as Nature, Science Advances, Joule, and PNAS. He currently serves as a guest editor of Journal Micromachines.

His works have been recognized by many awards, including Young Innovative Researcher Award (2025), the Hong Kong Youth Scientist Award (2022), MRS Graduate Student Silver Award (2021), RGC postdoctoral fellowship (2021), Hiwin Doctoral Dissertation Outstanding Award (2021), and Chow Yei Ching School of Graduate Studies Outstanding Doctoral Research Award (2020).

Dr XU Xiaote

XU Xiaote earned his B.Sc. degree in Information Engineering from South China Normal University (SCNU) in 2015, followed by an M.Sc. degree in Microelectronics and Solid-state Electronics from Peking University (PKU) in 2018. In 2023, he completed his Ph.D. in Mechanical Engineering from the City University of Hong Kong. His research focuses on energy harvesting and self-powered sensing, specifically in the areas of triboelectric, piezoelectric, and hydrovoltaic nanogenerators. In his spare time, he enjoys listening to music, watching documentaries, hiking, and playing board games.

Dr SUN Jinhong

Sun Jinhong, is currently a postdoctoral researcher at the Department of Electrical and Electronic Engineering, The Hong Kong Polytechnic University. Her main research areas include power electronics control, motion control of electric vehicles, and autonomous driving strategies. She obtained her Master’s degree in Electronic and Information Engineering from City University of Hong Kong in 2015 and her Ph.D. in Electrical Engineering from The Hong Kong Polytechnic University in May 2021. She has published over 10 SCI journal articles and has been dedicated to the fields of power electronics control and vehicle control for nearly a decade. So far, she has participated in seven million-level projects and holds two US patents.

Dr WANG Jingjing

Dr. Jingjing Wang is a postdoctoral researcher at The Hong Kong Polytechnic University. She received her B.Sc. in Chemistry from Zhengzhou University in 2017 and her Ph.D. in Physics from Henan University in 2023. Her research focuses on interfacial charge dynamics, droplet-based energy conversion, and self-powered sensing. Combining her background in chemistry and physics, she investigates charge separation and transport at solid–liquid–gas interfaces and develops functional surfaces and devices for water energy harvesting and intelligent sensing.

Zhou Nannan

Mr. Zhou Nannan is currently pursuing Dual PhD degrees at The Hong Kong Polytechnic University and Harbin Institute of Technology since 2021. His research focuses on digital ultraviolet lithography (Optical 3D μ-printing) and flexible piezo/triboelectric sensors, with developing their wide applications in wearable and haptic fields. During his PhD program, he has published 5 papers on flexible electronics in journals such as Energy Conversion and Management, Nano Research, and Chemical Engineering Journal. He attended IEEE MEMS 2025, a top conference in micro-nano fabrication, to present his latest works.

JIN Lihan

Lihan JIN received his Bachelor’s degree in Vehicle Engineering from Beijing Institute of Technology in 2019, and Master degree in Mechanical Engineering from the City University of Hong Kong in 2020. Before joining Dr. XU’s Group, he was a research assistant at the City University of Hong Kong, and the Hong Kong Polytechnic University. He is currently pursuing a Ph. D. degree in Dr. XU’s Group with research interests focused on droplet energy harvesting, piezoelectric materials, wireless power transfer and the applications of all these new technologies.