Liu-Jun Xu received the Ph.D. degree from the Department of Physics, Fudan University, Shanghai, China, in June 2022.
Ji-Ping Huang received the Ph.D degree in Physics from The Chinese University of Hong Kong, Hong Kong, China, in 2003. Since 2005, he has been a Professor in the Department of Physics, Fudan University, Shanghai, China. He was a Research Fellow of the Alexander von Humboldt foundation (Germany) in 2004–2005. His current research interests include theoretical thermotics and thermal metamaterials.