Date: July 20, 2017 (Thursday)
Time: 4:00pm - 5:00pm (Reception 3:30pm)
Venue: Lecture Theatre A, Chow Yei Ching Building, HKU
Speaker: Professor L. Jay Guo
Department of Electrical Engineering and Computer Science
The University of Michigan
We find rich and pleasing colors in the world around us, mostly with the use of colored pigments. Many insects produce vivid colors by the nanostructures on their wings, made of materials that can be entirely colorless. It is now possible to engineer different electromagnetic responses in the visible, infrared, THz or radio frequency range by designing structures using dielectric and metallic elements. For example, structural colors can benefit compact and high-efficiency displays and imagers, new vehicle coatings, and building integrated photovoltaics; certain photonic structures can modify the thermal emission properties of heated objects, benefiting thermal-light interconversion efficiencies; surface structure with broadband RF absorptions can help achieve stealth functionality. This talk will present the guiding principles, with an emphasis on structural simplicity, and scalability to practical manufacturing, e.g. by roll-to-roll patterning and deposition processes.
Professor L. Jay Guo started his academic career at the University of Michigan in 1999, and has been a full professor of Electrical Engineering and Computer Science since 2011, and affiliated with Applied Physics, Mechanical Engineering, Macromolecular Science and Engineering. He has more than 200 refereed journal publications with over 25,000 citations, and close to 20 US patents. Many published work from his lab have been featured by numerous media. He was the recipient of the Research Excellence Award from the College of Engineering at UM and Outstanding Achievement Award from the EECS department. His group’s researches include polymer-based photonic devices and sensor applications, organic and hybrid photovoltaics, plasmonic nanophotonics, nanoimprint-based and roll to roll nanomanufacturing technologies.
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All are welcome!