Multi-Platform Nanophotonics: From Artificial Metasurfaces to Natural Materials
Date:
29 Oct, 2021 (Fri)
Time:
3:00 pm
Webinar Link:
https://hku.zoom.us/j/92786636299?pwd=eEh6M3oxell4VXJzVWM2Z2k1ZFRxQT09

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Speaker

Dr. Guangwei Hu,
National University of Singapore (NUS)

Abstract

Nanophotonics is a rapidly growing field that studies and engineers the light-matter interactions at the nanoscale, which is essential in modern optics. Central in nanophotonic technologies is the material platforms. In this talk, I will show our recent results on molding the light flow at the nanoscale in various exciting platforms, from artificially designed structural materials such as metasurfaces [1] to natural materials presenting exotic optical properties including low-dimensional quantum materials [2,3] and traditional crystals [4,5], for nanophotonic applications from visible to infrared to terahertz frequency ranges. Several physics concepts such as hyperbolic responses, topological transitions, flat band, non-Hermitian photonics and polaritonics will be included in this talk. Other results on hybridizing nanophotonic metasurfaces with monolayer semiconductors will also be discussed [6]. Those engineered novel nanophotonic platforms will be important for many technologies such as infrared sensing, bio-imaging, optical computations, quantum optics, lasing, photonic circuits and many others.

[1]. Nano Letters 20, 3217-3224, 2020; [2]. Nature 582, 209–213, 2020; [3]. Nature 597, 187–195, 2021; [4]. Nature 596, 362–366, 2021. [5]. Nature in press. [6]. Nature Photonics 13, 467-472, 2019.


Join Zoom Meeting:

https://hku.zoom.us/j/92786636299?pwd=eEh6M3oxell4VXJzVWM2Z2k1ZFRxQT09
Meeting ID: 927 8663 6299 
Password: 883956 

 

Biography of the speaker: 

Dr. Guangwei Hu is currently a research fellow in National University of Singapore (NUS). He received the B.Sc. in physics from Harbin Institute of Technology in July 2016 and Ph.D. from NUS in Oct. 2020. His current research interests are developing novel nanophotonic platforms by combining metasurfaces with low-dimensional quantum nanomaterials and traditional crystals for nonlinear, valleytronic, polaritonic, topological, twistronic and other new concepts and applications. He has published more than 50 papers, including 4 in Nature, 1 in Nature Photonics, 4 in Nature Communications, 1 in PRL (corresponding author) and many others. His work has been featured as Top 10 Breakthrough in Physics of 2020 by Physics World, Optics and Photonics News (Year of Optics in 2021) and many others. He received the Rising Star of Light in 2020 by Light: Science & Applications, NUS President’s Graduate Fellowships and various other awards.

 

All are welcome.


Organizer

Prof. K.K.Y. Wong

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For enquiries, please contact:
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Tel: (852) 3917 7093
Email: seminar@eee.hku.hk