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Imaging and Sensing (Waves) Seminar

October 25, 2022 - 3:00pm

Where: 362B (ACS building)

When: 15:00-16:00

Speaker: Ben Latham

Title: Investigating Plasmonic Scattering by a Sphere using Enriched Finite Element Methods

Abstract: We will investigate scattering by as sphere under surface plasmonic conditions. Surface plasmons are highly oscillatory waves localized to the interface between a dielectric (air, vacuum) and a metal (gold, silver). As surface plasmons lead to large field enhancements, they are useful for high-resolution imaging and other applications. It is challenging to capture them numerically, and standard methods do not succeed. In the context of a spherical scatterer, we identify where plasmonic excitations can arise, and investigate FEM-based methods for addressing the numerical issues.