Recently, the Institute of Materials Physics, School of Physics, Zhengzhou University has made progress in the lifetime control of luminescent carbon dots and its application in time-division dual-channel encryption. The relevant results are published in a paper entitledLifetime-Engineered Carbon Nanodots for Time Division Duplexingin the internationally renowned journalAdvanced Science. The first author of the thesis is Liang Yachuan, a doctoral student in the School of Physics, and the corresponding authors are Dr. Liu Kaikai, a young teacher of the College of physics, Professor Shan Chongxin and Dr. Sui Laizhi of Dalian Institute of Chemical Physics.