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Electrical Engineering Seminars

A Look at Optical Nanoantennas and Quantitative Second-Harmonic Generation Microscopy

Kimani Toussaint, Professor of Engineering, Brown University

Friday, Nov 6, 2020

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The remarkable versatility of optical microscopy has helped to both elucidate our fundamental understanding of biological systems and enable the manipulation of matter at the nanoscale. This talk will highlight the major bio- and nanophotonics projects pursued by the laboratory for Photonics Research of Bio/nano Environments (PROBE). We will discuss our work developing quantitative second-harmonic generation (SHG) microscopy. Specifically, we will review the quantitative SHG microscopy techniques pursued by the PROBE lab for assessment of a variety of collagenous tissues, and discuss our approach to integrate polarimetry with this nonlinear optical imaging modality. The second part of the talk will highlight our work on multifunctional optical nanoantennas. In particular, we show how the optical parameter space, along with the nanoantenna geometric properties can be tuned for a range of applications from light-driven particle manipulation to recording the optical near field. The talk will conclude with a brief discussion of some of the very recent directions pursued by the PROBE lab.

Speaker Bio

K. C. Toussaint, Jr., Ph.D. is a Professor and Senior Associate Dean in the School of Engineering at Brown University. Prior to joining Brown, Dr. Toussaint was on faculty at the University of Illinois at Urbana-Champaign for 12 years, where he rose to the rank of Professor in the Department of Mechanical Science and Engineering. Dr. Toussaint directs the laboratory for Photonics Research of Bio/nano Environments (PROBE Lab), an interdisciplinary research group which focuses on both developing nonlinear optical imaging techniques for quantitative assessment of biological tissues, and novel methods for harnessing plasmonic nanostructures for light-driven control of matter. He is a recipient of a 2010 NSF CAREER Award, the 2014-2015 Dr. Martin Luther King, Jr. Visiting Associate Professor at MIT, the 2015 Illinois Dean’s Award for Excellence in Research, the 2017 Illinois Everitt Award for Teaching Excellence, and the 2019 Distinguished Promotion Award. Dr. Toussaint is also a Fellow of the OSA and SPIE, and Senior Member in the IEEE. In addition, he served as the PI and inaugural Director of the NSF Nanomanufacturing Node at the University of Illinois at Urbana-Champaign from 2017-2019.


Demba Ba


Jessica Brenn