[IEEE AP-S Seminar] Metamaterials and Metasurfaces from THz to Visible: Active Devices, Displays, LiDAR, and Sensing

Please join us for an upcoming seminar by Dr. Jisoo Kyoung, faculty member in the Department of Physics at Dankook University, South Korea, and visiting professor in the Edward S. Rogers Sr. Department of Electrical and Computer Engineering at the University of Toronto. Date: 4 November 2026 Time: 5 - 6 pm (ET) Location: University of Toronto, Earth Sciences Centre (ES), 5 Bancroft Avenue, Toronto, ON M5S 3J1, Room ES B142 (Placer Dome Classroom), Basement level (B-level). https://www.classfind.com/toronto/room/ESB142 This event is supported by the IEEE AP-S Technical Committee on Electromagnetics and Fundamentals (TC5) and the IEEE Toronto Section. Abstract: Metamaterials and metasurfaces provide a versatile platform for controlling electromagnetic waves at subwavelength scales across a wide range of frequencies. Realizing them in each spectral band, however, brings different material, fabrication, and device challenges. This talk presents research on metamaterials, metasurfaces, and their applications from the terahertz (THz) to the visible regime. In the THz regime, active metamaterials based on nanoscale slot antennas and vanadium dioxide (VO2) will be discussed. In the visible, a meta Fabry-Pérot cavity enabled an ultrahigh-resolution OLED display. In the near-infrared, a metal-insulator-metal active metasurface achieved, to our knowledge, the first demonstration of full 360° phase modulation, with relevance to LiDAR. In the mid-infrared, machine learning combined with slot-antenna structures was used to realize a protein-sensing chip. Finally, ongoing work on near-field meta-optics based on THz meta-emitters will be introduced. Across these examples, the talk highlights how design strategies and practical constraints change with wavelength and application, and what can be carried over from one spectral band to another. Biography: Jisoo Kyoung is a faculty member in the Department of Physics at Dankook University, South Korea, and is currently a Visiting Professor in the Edward S. Rogers Sr. Department of Electrical and Computer Engineering at the University of Toronto. After receiving a Ph.D. in 2012, he conducted research at Samsung Advanced Institute of Technology (SAIT) before joining Dankook University in 2020. His research focuses on metamaterials and metasurfaces for electromagnetic wave manipulation and device applications across a broad range of frequencies, from visible light and infrared to terahertz. His work spans metasurface-based OLED displays, LiDAR, infrared biosensors, and terahertz meta-optics.