Steering Photons to Control Light and Heat on the Nanoscale

Who: Ognjen Ilic, University of Minnesota
Wednesday, November 18, 2020 - 12:00pm

Abstract: Nanoscale photonic structures such as metamaterials and metasurfaces are enabling manipulation of light and heat in unprecedented ways. In this talk, I will present our research on shaping and controlling electromagnetic fields associated with thermal and mechanical applications. In the first part of my talk, I will present the work on tailoring high-temperature thermal emission by photonic elements that enable light recycling, relevant for high-efficiency heat-to-electricity energy harvesting. Next, I will show how nano-structured two-dimensional materials can challenge conventional thermal radiation, from radiative energy exchange that overcomes the Planck’s blackbody limit to nanoscale thermal switches and modulators. Finally, I will discuss how optical manipulation of objects with engineered nanostructure can open up new frontiers in optomechanics. By embedding nanoscale elements to locally control the scattering of light, it becomes possible to manipulate macroscopic objects at arbitrary distances. These concepts of nanophotonic engineering could lead to novel long-range levitation and manipulation paradigms with unique new terrestrial and space applications.

This talk is hosted by the Pitt ECE Department. Zoom session info will be updated shortly.