Yi Shi has been a Changjiang Professor at Nanjing University since 2006. He has published extensively on advanced electronic and optoelectronic materials and devices as well as on nanotechnology. Currently, his research interests are focused on nanostructured materials and the applications in optoelectronics. Shancheng Yan joined Nanjing University of Posts and Telecommunications as a Professor in May 2010. His research interests focus on novel nanomaterials, controlled synthesis, characterization, assembly, and their biological/optoelectronic applications.