Hybridized Metasurfaces: A New Twist in Flat Optics: Nano Seminar Series

Seminar | March 9 | 2-3 p.m. | 60 Evans Hall | Note change in time and location

 Prof. Cheng-Wei Qiu, Nat'l University of Singapore, ECE

 Berkeley Nanosciences and Nanoengineering Institute

I will report some of the most recent developments in my group as well as in the field of the interfacial engineering of manipulation of light-matter interactions, via the artificially constructed structures of ultrathin thickness compared to the wavelength. In particular, the low-dimension and high-frequency scaling may promise a lot more interesting applications, while the challenges in design principle and fabrication capability will become critical limits.

Nano-patterned surfaces to modulate and structure novel light behavior will be studied and the following advanced functionalities will be discussed: 3D meta-hologram, high-pixelated nanoprinting, dynamic OAM generation, and more interestingly, the 2D-material meta-lens of less-than-1nm thickness, etc.

Our work paves a roadmap to design sophisticated and advanced optical devices, with low dimension, miniaturization, randomness, and scaled-up capability.

Cheng-Wei Qiu did his PhD in 2007 and postdoc at MIT. He joined NUS in 2009 and was recently promoted to Dean's Chair in the Faculty of Engineering. He is recipient of several young investigator awards including the 2018 SPIE Rising Researcher. He has published over 160 papers, and is associate editor of several journals, including EPJ and ACS Photonics.