Prof. Makoto Iwasaki, IEEE Fellow |
Short Bio: Makoto Iwasaki received the B.S., M.S., and Dr. Eng. degrees in electrical and computer engineering from Nagoya Institute of Technology, Nagoya, Japan, in 1986, 1988, and 1991, respectively. He is currently a Professor at the Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology. As professional contributions of the IEEE, he has participated in various organizing services, such as, a Co-Editors-in-Chief for IEEE Transactions on Industrial Electronics from 2016 to 2022, a Vice President for Planning and Development in term of 2018 to 2021, etc. He is IEEE fellow class 2015 for "contributions to fast and precise positioning in motion controller design". He has received many academic, foundation, and government awards, like the Best Paper and Technical Awards of IEE Japan, the Nagamori Award, the Ichimura Prize, and the Commendation for Science and Technology by the Japanese Minister of Education, respectively. He is also a fellow of IEE Japan, and a member of Science Council of Japan. His current research interests are the applications of control theories to linear/nonlinear modeling and precision positioning, through various collaborative research activities with industries.
Prof. C.W. Lim |
Short Bio: Currently a fellow of ASME, ASCE, EMI and HKIE, Ir Professor Lim received a B.Eng. from University of Technology of Malaysia, M.Eng. and PhD from National University of Singapore and Nanyang Technological University, respectively. Prior to joining City University of Hong Kong, he was a post-doctoral research fellow at The University of Queensland and The University of Hong Kong. He is also a visiting professor at various universities worldwide. He has expertise in theory of plates and shells, dynamics of smart piezoelectric structures, nanomechanics, metamaterials and symplectic elasticity. He is currently the subject editor for Journal of Sound and Vibration, joint-editor for Journal of Mechanics of Material and Structures, subject editor for Applied Mathematical Modelling, Managing Editor (Asia-Pacific Region) for Journal of Vibration Engineering & Technologies, Associate Editor for International Journal of Bifurcation and Chaos, etc. and also on the editorial board of some other top-ranked international journals. He has published one very well-selling title entitled “Symplectic Elasticity”, co-authored with W.A. Yao and W.X. Zhong from Dalian University of Technology, as recorded by the publisher, World Scientific, in Engineering Mechanics and Mechanical Engineering. He has published more than 370 international journal papers and have more than 14,500 citations. His paper on the nonlocal strain gradient theory has attracted over 1,150 citations since first published in 2015. Professor Lim was awarded the prestigious 2020 JN Reddy Medal as a recognition “for significant and original contributions to vibration of plates and shells, smart piezoelectric structures, nanomechanics, and symplectic elasticity”. Recently he was elected by secret votes to deliver a Plenary Lecture at WCCM/APCOM 2022, the largest biennial meet for computational scientists worldwide. He was also invited to chair another plenary lecture. WCCM 2020 recorded over 400 mini-symposia and over 5,000 papers accepted. He was also previously awarded Top Referees in 2009, Proceedings A, The Royal Society. Professor Lim is a registered professional engineer in Hong Kong.
Speech Title: Voltage Controlled Topologically Protected Wave Propagation in Dielectric Membrane-type Acoustic Metamaterials
Abstract: Topological acoustic metamaterials have attracted enormous research attention in recent years. A significant hallmark of these structures is that they can support interface modes that are robust to structural disturbance and protected by topology. However, most of the studies are often limited to the passive structures that manifest wave propagation at fixed frequency ranges. In view of the shortage of non-passive topological acoustic metamaterials, this work has a primary motive to study the active control of topologically protected wave propagation in soft dielectric membrane-type metamaterials (MAM) based on quantum spin Hall effect (QSHE). The unit cell of the periodic structure is designed with symmetry. Then, the plane wave expansion method is adopted to analytically capture the system dispersion properties. A finite element model is further developed and excellent convergence with the analytical result is presented. By adjusting locations of spraying discs in the honeycomb unit cell, mode shape inversion is observed, separating the topologically trivial state from the nontrivial counterpart. Consequently, the topologically protected interface modes (TPIMs) are observed. Additionally, an electrical voltage that lies within the locking-up limit is applied to MAM to actively control the working frequency of the TPIM. Further, several waveguide paths are designed to control the robust wave propagation in the structure. Conclusively, a voltage-controlled topological metamaterial is designed to actively tune the working frequency range of the device.
Prof. Teresa Zielinska |
Short Bio: Full professor of technical sciences. Deputy director for research at the Institute of Aeronautics and Applied Mechanics of the Warsaw University of Technology (WUT) and Rector’s Proxy of WUT for internationalization and doctoral education. Member of the Control and Robotics Committee of the Polish Academy of Sciences, Vice-President of the Polish Section of Robotics and Automation IEEE (2016-2019) and Secretary General of the International Federation for the Promotion of Mechanism and Machine Science (IFToMM) (2011-2019). Local coordinator of the Japan-Europe Master of Advanced Robotics (JEMARO), member of the Experts Team of the Ministry of Science and Higher Education (2017-2018), member of the Council of the National Science Center (2019-2022). She conducted research at several international universities, e.g. Polytechnic University of Turin (grant from the Italian Ministry of Education), Loughborough University of Technology (UK, grant from the Science and Engineering Research Council), Nanyang Technological University (Singapore) - senior research fellow. Visiting professor at: National University of Singapore, Nanyang Technological University (Singapore), Griffith University (Australia), Keio University (Japan), Shanghai Jiaotong University (China), Tianjin University of Technology (China). She is the co-holder of 2 national patents and the author or co-author of over 300 publications. Teresa Zielińska received the award of the Minister of Higher Education (Poland) for her scientific monograph, the Gold Cross of Merit and the Medal of the National Education Commission, as well as many university awards for her scientific activity. She graduated from the Faculty of Electronics of the Warsaw University of Technology, specializing in control, received her doctorate in robotics, and obtained her habilitation at the Institute of Biocybernetics of the Polish Academy of Sciences. Her research interests concern robotics, in particular biorobotics. Teresa Zielinska deals with the design and implementation of real-time control systems, motion synthesis and the design of novel robotic systems inspired by biology. She designed a prototype of a shear force sensor, developed and implemented a model of a biological Central Pattern Generator to generate motion for a humanoid robot, implemented a control system for an autonomous team of biologically inspired autonomous walking machines. Currently, her research interests focus on predicting human movement and actions. She is a laureate of the 1000 Talents Experts Program of Tianjin Municipality. She serves as Vice President of HERITAGE Network (Europe-India, is a member of the advisory board of Chist-Era and coordinates of academic cooperation between WUT - NTU and NUS (Singapore).