Giving to CREOL CREOL, The College of Optics & Photonics

Seminar: "Lorentz forces in plasmonic systems" by Dr. Luat Vong

Thursday, January 25, 2018 12:00 PM to 1:00 PM
CREOL Room 103

Dr. Luat Vong


Today, our knowledge of the light-induced forces on small objects is relevant to research across disciplines. In many respects, the technology is mature, since several companies sell turn-key equipment that optomechanically confine or “tweeze” microparticles in 3D; however, these commercially-available systems function reliably only with dielectric and insulating materials. In other words, the widespread predictive control over the light-induced forces on metals or conducting nanomaterials has not yet been achieved.
I will discuss the nonlinear Lorentz force in plasmonic structures, which results in electrical potentials and mechanical forces associated with turbulent dynamics. We show that light-induced plasmonc dynamics lead to reliable pattern formation in plasmonic nanoparticles in liquids. We provide experimental, theoretical, and new numerical results that demonstrate consistent long-range self-assembly via plasmon-induced forces. Our results are relevant to nascent models of plasmonically-powered processes.


Luat received her Ph.D. in Applied Physics at Cornell, studying optical vortex collapse and filamentation dynamics in Alexander L. Gaeta's Quantum and Nonlinear Photonics Group. With a Fulbright in 2007, she joined the Delft University of Technology Optics Group in the Netherlands, where she studied the near-field scattering in plasmonic structures.  She segued into research on nanostructured organic photovoltaics at ICFO- The Institute of Photonic Sciences in Spain with a European Commission MC-IIF Postdoctoral Fellowship and joined Queens College in 2010. Luat is a 2012 recipient of the NSF Career Award and co-chair for a Gordon Research Conference that she has recently initiated, "Plasmonically Powered Processes", to take place next in Hong Kong, 2019. 

For additional information:

Kyle Renshaw

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