GoKawiilCOMSOL Webinar to Detail Multipole Design Method for Dielectric Metasurfaces
A webinar featuring Dr. Pavel Terekhov, a postdoctoral researcher at NIST, will explain how combining finite element simulation with multipole decomposition in COMSOL Multiphysics can predict and explain optical resonances in dielectric metasurfaces. The talk will cover a crystalline silicon metasurface built from quadrumer meta-atoms that shows enhanced absorption from two coexisting multipole mechanisms, as well as ongoing work on a gallium nitride metasurface using four interacting multipoles to control reflection, transmission, and quasi-bound-states-in-the-continuum behavior.
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The session frames multipole-based simulation not merely as a way to diagnose resonance behavior but as a potential design strategy, which could let engineers tailor absorption, reflection, and transmission properties in advance rather than through trial and error. This approach may be useful to researchers developing flat optics, sensors, and energy-harvesting devices, since precise control over light-matter interaction at the nanoscale underlies those applications. The gallium nitride work remains ongoing, so its eventual practical impact is not yet established.
- Webinar led by NIST's Dr. Pavel Terekhov focuses on multipole decomposition combined with COMSOL simulation
- Silicon metasurface made of quadrumer meta-atoms shows anomalous absorption via two multipole mechanisms
- Ongoing gallium nitride metasurface work uses four multipoles to shape reflection and transmission, including q-BIC effects
Source: event.on24.com, 2026-10-02
Published there as: “Engineering Multipole Resonances in Dielectric Metasurfaces for Transmission, Reflection, and Absorption Control”
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