Qingying Ren is a Lecturer at the College of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications. She completed her Ph.D. studies in Microelectronics and Solid State Electronics from the Southeast University in 2017. Afterward, she joined the Nanjing University of Posts and Telecommunications. Her research interests include temperature and humidity sensors; passive wireless sensors; MEMS; and sensor functional materials.