Manipulating Light Flow with 2D Materials Plasmons

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Date/Time:Monday, 07 Oct 2019 from 4:10 pm to 5:00 pm
Location:Phys 0005
Phone:515-294-5441
Channel:Colloquium
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Dr. Tony Low, University of Minnesota

Abstract: Recent years have witnessed a plethora of strong dipole type polaritonic excitations in 2D materials. In this talk, I will explain how atomically thin materials, through plasmons, can lead to strong light-matter interaction phenomenon and perfect light absorption. I will discuss our recent efforts in understanding plasmons behavior in 2D materials and using them to control the flow of light both in the far- and near-field. The general constitutive materials response of 2D materials, in conjunction with metasurface approaches, can potentially enable arbitrary control of phase, amplitude, polarization of light. The flow of light within the 2D materials can also exhibit rich transport behavior, such as hyperbolic rays, non-reciprocal chiral propagation, time reversal of waves and coupling of light spin to induce one-way propagation.

Biography: Tony Low leads the Theory & Computational Group at the department of Electrical & Computer Engineering at the University of Minnesota. Prior to this, Low worked as a research scientist at Columbia University and IBM Thomas J. Watson Research. While at IBM, from 2011-2014, Low served as an industry liaison to various Universities under the Semiconductor Research Consortium & National Science Foundation, with the goal of finding the next electronics switch. He obtained his doctoral degree from the National University of Singapore in 2008, and then a postdoctoral associate at Purdue University. Low received the Presidential McKnight Fellowship (2019), the IBM Pat Goldberg Memorial Best Paper Award (2014), and the IBM Invention Award (2013).