Weijie Song is a research professor and group leader at the Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences. He received both his Bachelor’s degree and his Ph.D. at Tsinghua University in 1997 and 2002, respectively. He was engaged in postdoctoral research at the National Institute for Materials Science, Japan (2002–2006). His main research focuses on functional thin films and devices. Currently, he is mainly working on materials and devices for flexible electronics, including transparent conductive materials, antireflection coatings, thin film photovoltaics, thin films for lithium ion batteries, smart windows, and wearable sensors.