Dai Jiyan is an internationally renowned scholar in the research on the structure of functional thin film materials and devices such as high-frequency and broadband ultrasonic transducers used in medical imaging. He has published more than 300 papers, which have been cited by more than 15,000 times (H index 57). He has published a monograph book "Ferroic Materials for Smart Systems-from Fundamentals to Device Application" (2020 Wiley).  He has completed a number of science and technology projects funded by the Hong Kong government and National 973 Project "Development of Advanced Ultrasonic Probes". He won the first prize of Guangdong Natural Science in 2020. He is currently a committee member of the National Dielectric Physics Society and the National Micro-Nano Technology Society of China.