报告题目：New Developments in 3D Biomimetic Platforms and Biosensors
报告人：Prof. Stella PANG
Understanding cancer cell motility, which is important in metastasis process, potentially brings new insights in cancer therapy and prevention. Cells migrate in different ways depending on cell types and degree of differentiations. Nanoimprint technology and structured surfaces are used to generate three dimensional (3D) biomimetic platforms to control the migration characteristics of various cell lines. Using shallow topographical patterns, cells from different histological origins showed different migration speed and directionality. The nanoimprinted 3D platforms when integrated with advanced structured surfaces and biosensors could be a novel in vitro tool for invasiveness assessment.
Stella W. Pang is the Department Head and Chair Professor in the department of Electronic Engineering at the City University of Hong Kong, and also the Director of the Center for Biosystems, Neuroscience, and Nanotechnology. Her research interests include nanofabrication technology for microelectromechanical, biomedical, microelectronic, and optical devices. Prof. Pang has 9 patents granted in nanotechnology and microsystems. She is also a Fellow of Institute of Electrical and Electronics Engineers (IEEE), Electrochemical Society (ECS), and American Vacuum Society (AVS).
报告题目：Massive Random Access: Fundamental Limits, Optimal Design, and Applications to M2M Communications
报告人：Dr. Lin DAI
In this talk, Lin Dai will introduce my recent work on modeling and performance optimization of random-access networks. Lin Dai will first show that a random-access network in general can be regarded as a multi-queue-single-server system, and the key to performance analysis lies in proper characterization of the service time distribution, which is difficult to obtain with either each node’s queue completely ignored or interactions among nodes’ queues taken into full consideration. Lin Dai will then introduce our newly proposed node-centric model, and demonstrate how to establish a unified analytical framework to characterize the fundamental limits of random-access networks. Lin Dai will conclude the talk by demonstrating how to apply the proposed theory to guide the optimal access design of M2M communications in LTE networks.
Lin Dai was a co-recipient of the Best Paper Award at IEEE Wireless Communications and Networking Conference (WCNC) 2007, and the IEEE Guglielmo Marconi Prize Paper Award (the annual Best Paper Award of IEEE Transactions on Wireless Communications) in 2009. Since 2014, she has been serving as an editor for IEEE Transactions on Wireless Communications, and an assistant dean of College of Science and Engineering of City University of Hong Kong.
报告题目：Applications of Nonlinear Laser Dynamics in Microwave Photonics
报告人：Dr. Nelson S.C. CHAN
This talk will summarize some recent developments in the applications of these nonlinear dynamics as exemplified by the so-called period-one (P1) state and chaotic state. In P1 states, the laser can be applied for radio-over-fiber communication as a photonic microwave oscillator with high frequency-stability, optical controllability, and wide frequency-tunability. In chaotic states, the laser can be applied for random bit generation in cryptography with minimal electronics at bit rates exceeding 0.2 Tbps. Specifically, we recently developed a scheme employing a fiber Bragg grating (FBG) for a simple and high-quality generation of random bits. Some fundamental issues related to the entropy associated with the laser dynamics will also be discussed.
Nelson Sze-Chun Chan served as Guest/Feature Editor of IEEE Journal of Selected Topics in Quantum Electronics (Issue on Semiconductor Lasers) in 2013 and OSA Optics Express (Issue on Physics and Applications of Laser Dynamics) in 2018. His research interests include nonlinear dynamics of semiconductor lasers, optical chaos generation, radio-over-fiber, and photonic microwave generation.
报告题目：Spectral Arithmetic: Modular Arithmetic and Architecture in Public-key Cryptography
报告人：Dr. Ray C.C. CHEUNG
The main objective of this talk is to give an overview of applying spectral arithmetic in the modular computations for public-key cryptography, and share possible solutions to these two issues and provide arithmetic and hardware architecture level improvements for high-performance computation and area-time efficient hardware design.
Dr. Ray C.C. CHEUNG is the author of more than 120 journal and conference papers. His research team, CityU Architecture Lab for Arithmetic and Security (CALAS), focuses on the following research topics: reconfigurable trusted computing, applied cryptography, and high-performance biomedical VLSI designs. He is a member of the IEEE, the chair of IEEE HK Section CAS/COM Joint Chapter, the past chair of IEEE Industrial Electronics Society, Technical Committee, Electronic System-on-Chip (eSoC). the past vice-chair of IEEE HK Section Computer Chapter, the current IEEE HK Section Student Branch Counsellor (CityU).
报告题目：Wideband Circularly-Polarized Millimeter-Wave Antennas
报告人: Dr. Hang WONG
This talk will introduce a new antenna technology for high frequency antenna development and realization for recent fast-speed communication systems in millimeter-wave spectrum. The content of this talk includes linearly-polarized and circularly-polarized antenna designs with the help of 3D printing technology to develop low-cost, wideband, and high-gain directional beam antennas.
Dr. Hang WONG was awarded 17 US and China patents. He was the co-author of two antenna research book chapters. He was the chair of the IEEE Hong Kong Section of the Antennas and Propagation (AP)/Microwave Theory and Techniques (MTT) Chapter from 2011 to 2014. He is recently appointed as the IEEE APS Region-10 Representative. He is an associate editor of IEEE AWPL, Antennas and Wireless Propagation Letters, since 2012.
报告题目：Discrete Huygens‘Metasurface and Huygens’Box: Frontiers in Electromagnetic Metasurfaces
报告人：Dr. Alex M. H. WONG
The first part of this talk examines the benefits to designing and implementing an aggressively discretized metasurface. This will be exemplified by metasurface designs of a near-grazing angle retroreflector and a perfect anomalous electromagnetic reflector. The latter part of this talk explores possibilities which avails us as we wrap a metasurface around a closed area. Simulations and experimental results will be presented which demonstrate the generation of an arbitrary waveform inside a metallic cavity. The talk will conclude with on implications and inspirations drawn from the aforementioned endeavors.
Dr. Alex M. H. WONG has received several accolades which include an IEEE RWP King Award (for the best annual publication by a young author in the IEEE Transactions on Antennas and Propagation), an URSI Young Scientist Award, a Raj Mittra Grant, IEEE doctoral research awards from the AP and MTT societies and the national NSERC Canada Graduate Scholarship. He is a member of the IEEE (AP and MTT Societies).
报告题目：Integrated photonic devices from nonlinear optical materials
报告人:Dr. Xin GAI
In this talk, Xin Gai will present my work in design and fabrication of the on-chip photonic devices including highly nonlinear nano-waveguide for the high-speed all-optical signal processing and the correlated quantum photon pair generation, basing on nonlinear effects particularly with the four-wave mixing; and high quality-factor photonic crystal cavity for bistable optical switching. A series of progress on broadband, high-brightness MIR supercontinuum generation will also be discussed.
Xin Gai received his B.E. from Zhejiang University (ZJU) in 2007 and obtained his PhD degree from the Australian National University (ANU) in 2013. Since then he has started as Postdoctoral Fellow at ANU and promoted to Research Fellow from 2015. His PhD and postdoctoral projects are closely related to Flagship Projects of CUDOS, an ARC Centre of Excellence (2003-2017, AUD $50M).