Wallace C. H. Choy received his PhD Degree in Electronic Engineering from the University of Surrey, UK. His work at Surrey was supported by the Croucher Foundation Scholarship. He then joined National Research Council of Canada as a member of research staff to work on optical device structures of polarization independent optical amplifiers and modulators. He joined Fujitsu at San Jose, US in 2001 to develop real-time wavelength tunable lasers. He is now an associate professor of Department of Electrical and Electronic Engineering, the University of Hong Kong (HKU). His current research interests are concerned with organic optoelectronic devices and nano-material devices. Dr. Choy has published over 100 internationally technical journal papers, contributed to two book chapters and US patents. He received Outstanding Achievement Award from National Research Council of Canada in 2001 and overseas visiting fellowships from HKU to take a sabbatical leave at George Malliaras's Group, Cornell University in 2008, visits to Prof. Yang Yang, UCLA in the summer of 2009 and 2011, a visit to Prof. Karl Leo, Institut fuer Angewandte Photophysik (IAPP), Technische Universitaet Dresden, Germany in the summer of 2010, as well as Prof. Hong and Prof. Kido, Yamagata University, Japan in the summer of 2012  He has been serving a technical consultant of HK-Ulvac (a member of stock-listed Ulvac Corp) since 2005.  He has delivered invited talks and served as a committee member in internationally industrial and academic conferences organized by various organizations such as IEEE, OSA and Plastic  Electronics Foundation.  He is now a senior member of IEEE, CEng and Member IET.