Zhang Zejun, a postdoctoral fellow in the Department of Modern Mechanics at the University of Science and Technology of China, is engaged in the research of nanocomposite ultra-black materials. He received a Bachelor of Science degree in Applied Physics from the Department of Physics at the University of Science and Technology of China in 2016, and a Doctor of Science degree in Particle Physics and Nuclear Physics from the University of Chinese Academy of Sciences (Shanghai Institute of Applied Physics, Chinese Academy of Sciences) in early 2023. He joined the Institute of Micro-Nano Composite Materials at the University of Science and Technology of China in March 2023.