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Light Manipulation with Four-Dimensional (4D) Metastructures
It is well known that electromagnetic waves can be controlled and manipulated with materials. More specifically, the spatial inhomogeneity of material parameters can be used to tailor the EM waves. In recent years, there has been a growing interest in light-matter interaction in spatiotemporal media, i.e., material platforms in which the material parameters can change in time, in addition to (or instead of) their variation in space. In this webinar, I will present some of our ongoing work on wave-matter interaction in such four-dimensional (4D) metastructures and I will discuss how we can achieve useful functionality by having this extra degree of freedom in wave manipulation (including polarization manipulation). I will present our most recent results and we will forecast future directions in these research areas.

Aug 30, 2022 06:00 AM in Pacific Time (US and Canada)

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Nader Engheta
Professor in Electrical & Systems Engineering @University of Pennsylvania
Nader Engheta is the H. Nedwill Ramsey Professor at the Univ. of Pennsylvania in Philadelphia, with affiliations in the Departments of Electrical and Systems Engineering, Physics and Astronomy, Bioengineering, and Materials Science and Engineering. He received his BS degree from the University of Tehran, and his MS and Ph.D. degrees from Caltech. His current research activities span a broad range of areas including photonics, metamaterials, electrodynamics, microwaves, nano-optics, graphene photonics, imaging and sensing inspired by eyes of animal species, microwave and optical antennas, and physics and engineering of fields and waves. He is a Fellow of nine international scientific and technical organizations: IEEE, OPTICA, APS, MRS, SPIE, URSI, AAAS, IOP and NAI. He received honorary doctoral degrees from the Aalto University in Finland in 2016, the University of Stuttgart, Germany in 2016, and Ukraine’s National Technical University Kharkov Polytechnic Institute in 2017.