When: 9:30-11:30 am, Friday, 8 April, 2016
Where: Room No. C-602, Building No. 26
Lecturer 1: Hon Ki TSANG, Professor & Chairman of Electronic Engineering Department, The Chinese University of Hong Kong
About the Lecturer: Hon Ki Tsang received the B.A. (Hons) degree in 1987 in Engineering (Electrical and Information Sciences), and the Ph.D. and M.A. degrees in 1991, all from the University of Cambridge. He joined the Chinese University of Hong Kong (CUHK) in 1993 as a lecturer, advancing to Associate Professor and Professor in 1996 and 2003 respectively. Since 2010 he has been serving as chairman of the Department of Electronic Engineering, CUHK. He is also concurrently Director of the Center for Advanced Research in Photonics at CUHK. Hon Tsang has published over 300 papers in journals or conference proceedings. His recent research interests are in silicon photonics and waveguide components for communication applications, graphene on silicon photonics and on-chip mode division multiplexing.
About the Lecture: Nanoscale photonic integration of hundreds of photonic components on a CMOS chip has been demonstrated, but the number of monolithic photonic devices are still many orders of magnitude less than the billions of transistors present in microprocessors. This large disparity in the number of photonic and electronic devices on the same chip arises because of the limitation in how small conventional silicon photonic devices can be made. In this talk we shall describe our recent work in two different approaches to enable the integration of smaller photonic devices. One approach for smaller photonic devices is to exploit the guiding of light at metal-dielectric interfaces from surface plasmon-polariton (SPP) modes. Another approach to make smaller photonic devices is to exploit the photonic bandgap of nanophotonic structures for highly compact resonators, filters or polarizers.
Lecturer 2: Sun Xiankai, Assistant Professor of Electronic Engineering Department, The Chinese University of Hong Kong
About the Lecturer: Sun Xiankai received his Ph.D. degree in Applied Physics from California Institute of Technology, USA, in 2010. After that, he worked in Department of Electrical Engineering at Yale University, USA, first as a Postdoctoral Research Associate and then as an Associate Research Scientist. He joined Department of Electronic Engineering at the Chinese University of Hong Kong, Hong Kong, in 2014, where he is currently an Assistant Professor. He is a finalist of the 2013 Blavatnik Awards for Young Scientists by New York Academy of Sciences. He received the 2015 Early Career Award by Hong Kong Research Grants Council. His research interests include nanophotonics, optoelectronics, optomechanics, and nanoelectromechanics.
About the Lecture: Optomechanics has witnessed its great success in detecting the first ever gravitational waves produced by collision and merger of two black holes about 1.3 billion light years away, which confirms a major prediction of Albert Einstein’s general theory of relativity and opens an unprecedented new window on the universe. Optomechanical systems have shown their unique advantages in fundamental research as well as practical applications in high-precision metrology, signal processing, and data communication. Optomechanical devices exhibit many variations with their sizes and mechanical masses spanning orders of magnitude. Going to the other end of the spectrum, I will talk about our experimental research of integrated nanoscale optomechanical and optoelectromechanical devices with pico/femtogram masses and gigahertz vibrational frequencies. These integrated devices hold great promise for many burgeoning areas in science and engineering, such as single-molecule detection, laser cooling, and quantum information processing.
Lecturer 3: Zhao Ni, Assistant Professor of Electronic Engineering Department, The Chinese University of Hong Kong
About the Lecturer: Zhao Ni received her doctoral degree in Physics from the University of Cambridge in 2008. From 2008-2010 she worked as a postdoctoral research fellow at the Massachusetts Institute of Technology (MIT). Her work at MIT involved developing novel hybrid solar cell structures that incorporate colloidal quantum dots with organic and inorganic materials as well as fundamental studies on the electronic processes in nanocrystalline films. Prior to MIT she worked in the Optoelectronic Group at the Cavendish Laboratory in Cambridge, UK. During her M.S Degree, Zhao worked in the Xerox Research Center of Canada on novel semiconducting polymers and their applications in field-effect transistors.
About the Lecture: Over the past two decades, there has been tremendous progress in discovering new solution-processed semiconductors for applications. Solution-processed materials are compatible with low-cost, large-area roll-to-roll processing, needing lower energy intensity for device fabrication; at the same time, solvent engineering of the materials enables tunability over their electronic and optical properties. In this talk, I will discuss the design and characterizations of optoelectronic and bioelectronic devices based on solution-processed semiconductors. I will start with introducing the optical spectroscopic tools we developed for in-situ material and device characterizations. I will then talk about the unique structure-property correlations in solution-processed semiconductors and how these correlations can be utilized to achieve tunable device performances. Lastly, I will describe the applications of our devices in energy, environmental, and biomedical sciences.
Organizer: Committee of Youth League
