Enable structural color & transparent conductors for real world applications
Date: 2022/06/24 - 2022/06/24
Academic Seminar: Enable structural color & transparent conductors for real world applications
Speaker: L. Jay Guo, Professor, Department of Electrical Engineering and Computer Science, University of Michigan
Time: 10:00 - 11:30, June 24, 2022 (Beijing Time)
Location: via Feishu (Meeting ID: 917 8115 4800, Passcode: umsjtu)
Abstract
Light interacting with metallic and dielectric structures can produce various interesting optical effects. Structural colors can be produced by exploiting optical resonances in various resonator structures, offering advantages over conventional colored pigments such as high brightness, durability, and environmental safety and sustainability. To enable many scientific findings for real world applications, means to practically fabricate the structures often presents a bottleneck. We show that scalable fabrication techniques, such as roll to roll nanoimprint and plasmonic waveguide lithography can facilitate large area manufacturing. Structure colors can also be designed with layered thin film structures, which can be easily made by additive physical vapor deposition processes, or even with solution process. Machine learning based design can significantly speed up the search for the optimal structure to achieve the desired color effect. As a special case, a flexible transparent conductor based on ultra-thin Ag film was developed that can find applications in flexible displays and touch screens, and can be made in large area format by industrial sputtering process.
Biography
Jay Guo is a Professor at the University of Michigan. Dr. Guo’s research is highly interdisciplinary, covering polymer-based photonic devices and sensor applications, flexible transparent conductors, nanophotonics, hybrid photovoltaics and photodetectors, to nanomanufacturing technologies, and are contributed by students from Electrical Engineering and Optics, Macromolecular Science & Engineering, Applied Physics, and Mechanical Engineering. He has over 260 journal publications; with citation over 25,000 times, and an H-index of 79 (by google scholar). He was an Associate Editor of Optica; and currently Associate Editor of IEEE J. Photovoltaics, and serves on the Editorial Advisory Board of Advanced Optical Materials; and an editorial board member of a new journal: Opto-electric Science.