Junrui Liang
Associate Professor
Graduated School:Ph.D., The Chinese University of Hong Kong, China
Tel:(021) 20685268
Office:Room 3-526, SIST Building
Research Interests
Selected Publications


  • Low energy embedded system

  • Ubiquitous Internet of Things (IoT)

  • Power management integrated circuit (PMIC)

  • Energy harvesting

  • Mechatronics


Junrui Liang is currently the CiPES Director, the Resource Management Committee Director and the Deputy director of EHS Committee.

Dr. Junrui Liang is an assistant professor at Shanghaitech University, China. He has received the B.E. and M.E. degrees in Instrument Science and Technology from Shanghai Jiao Tong University and the Ph.D. degree in Mechanical and Automation Engineering from The Chinese University of Hong Kong. Dr. Liang is an Associate Editor of the SCI-indexed journal IET Circuits, Devices & Systems since 2018. He is a member of the Technical Committee of Power and Energy Circuits and Systems in IEEE Circuits and Systems Society and the Energy Harvesting Technical Committee in the ASME Aerospace Division. He is also the General Chair of the 2nd International Conference on Vibration and Energy Harvesting Applications (VEH 2019). Dr. Liang’s research interests include energy conversion and power electronics, kinetic energy harvesting and vibration control, mechatronics, and Smart IoT devices. As of March 2019, his research has led to the publications of over 90 technical papers in international journals and conference proceedings and four China patent applications. Dr. Liang is a recipient of Best Student Contributions Award in the 19th International Conference on Adaptive Structures and Technologies; two Best Paper Awards in the IEEE International Conference on Information and Automation in 2009 and 2010; the 2010 Postgraduate Research Output Award from The Chinese University of Hong Kong; and the 2018 Research Excellence Award from the School of Information Science and Technology, ShanghaitehUniversity. He has supervised students and got Excellent Final Year Project (FYP) Supervisor from Tongji University, Second Runner-up in b2019 IEEE Industrial Society (IES) Inter-Chapter Paper Competition, Best Student Hardware Finalist in ASME Smart Materials, Adaptive Structures, and Intelligent Systems Conference (SMASIS), and two Third Awards in 2018 and 2020 Innovation and Entrepreneurship Competition at ShanghaiTech University.


Internet of Things:

  1. Xin Li, Li Teng, Hong Tang, Jingying Chen, Haoyu Wang, Yu Liu, Minfan Fu, and Junrui Liang*, “ViPSN: a vibration-powered IoT platform,” IEEE Internet of Things Journal, vol. 8, no. 3, pp. 1728-1739, 2021.

Power electronics, circuits and systems:

  1. Bao Zhao, Jiahua Wang, Junrui Liang*, and Wei-Hsin Liao*, “A bidirectional energy conversion circuit towards multi-functional piezoelectric energy harvesting and vibration excitation purposes,” IEEE Transactions on Power Electronics, doi: 10.1109/TPEL.2021.3083256.

  2. Bao Zhao, Kang Zhao, Xinchen Wang, Junrui Liang*, and Zhiyuan Chen, Series synchronized triple bias-flip circuit: maximizing the usage of single storage capacitor for piezoelectric energy harvesting enhancement, IEEE Transactions on Power Electronics, vol. 36, no. 6, pp. 6787-6796, 2021.

  3. Junrui Liang*, Yuheng Zhao, and Kang Zhao, “Synchronized triple bias-flip interface circuit for piezoelectric energy harvesting enhancement,” IEEE Transactions on Power Electronics, vol. 34, no. 1, pp. 275-286, 2019.

  4. Junrui Liang*, Synchronized bias-flip interface circuits for piezoelectric energy harvesting enhancement: a general model and prospects, Journal of Intelligent Material Systems and Structures, vol. 28, no. 3, pp. 339–356, 2017.

  5. Junrui Liang and Wei-Hsin Liao*, Improved design and analysis of self-powered synchronized switch interface circuit for piezoelectric energy harvesting systems, IEEE Transactions on Industrial Electronics, vol. 59, no. 4, pp. 1950–1960, 2012.

  6. Junrui Liang* and Wei-Hsin Liao, Steady-state simulation and optimization of Class-E power amplifiers with extended impedance method, IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 58, no. 6, pp. 1433–1445, 2011.

Mechanical design and dynamics analysis:

  1. Yiming Gao, Junrui Liang*, and Yabin Liao, “Multiple harmonics extended impedance model of piezoelectric energy harvesting system,” IEEE/ASME Transactions on Mechatronics, doi: 10.1109/TMECH.2021.3083319.

  2. Guobiao Hu, Junrui Liang*, Chunbo Lan, and Lihua Tang*, “A twist piezoelectric beam for multi-directional energy harvesting,” Smart Materials and Structures, vol. 29, no. 11, art. no. 11LT01, 2020.

  3. Bao Zhao, Jiahua Wang, Junrui Liang*, and Wei-Hsin Liao, A dual-effect solution for broadband piezoelectric energy harvesting, Applied Physics Letters, vol. 116, no. 6, p. 063901, 2020.
  4. Chen Chen, Bao Zhao, and Junrui Liang*, Revisit of synchronized electric charge extraction (SECE) in piezoelectric energy harvesting by using impedance modeling, Smart Materials and Structures, vol. 28, no. 10, art. no. 105053, 2019.

  5. Haili Liu, Junrui Liang*, and Cong Ge, A mechatronic power boosting design for piezoelectric generators, Applied Physics Letters, vol. 107, no. 14, art. no. 141902, 2015.

  6. Junrui Liang*, Henry Shu-Hung Chung, and Wei-Hsin Liao, Dielectric loss against piezoelectric power harvesting, Smart Materials and Structures, vol. 23, no. 9, art. no. 092001, 2014.

  7. Junrui Liang and Wei-Hsin Liao*, Impedance modeling and analysis for piezoelectric energy harvesting systems, IEEE/ASME Transactions on Mechatronics, vol. 17, no. 6, pp. 1145-1157, 2012.