Dr. Michael Z. Q. Chen is currently a Professor at the School of Automation, Nanjing University of Science and Technology, Nanjing, China. He pursued his PhD degree at Cambridge University during 2003-2007, under the supervision of Professor Malcolm C. Smith (Fellow of the Royal Academy of Engineering), who introduced the concept of inerter in 2002. Dr. Chen has been working on inerter, passive mechanical systems, and other related topics for more than 15 years. 

Dr. Yinlong Hu is currently a Lecturer at the College of Energy and Electrical Engineering, Hohai University, Nanjing, China. He received his PhD degree from the School of Automation, Nanjing University of Science and Technology, under the supervision of Dr. Michael Z. Q. Chen.