{
  "id": 11414115,
  "title": "Engineering Multipole Resonances in Dielectric Metasurfaces for Transmission, Reflection, and Absorption Control",
  "url": "https://urgent.news/2026/10/02/engineering-multipole-resonances-in-dielectric-metasurfaces-for",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-02T10:00:03.000Z",
  "source": {
    "name": "IEEE Spectrum",
    "slug": "ieee-spectrum",
    "url": "https://event.on24.com/wcc/r/5510255/64A1C3695631E727E756BFCA0490437A"
  },
  "original_language": "en",
  "account": "Dielectric metasurfaces are making a significant impact in nanophotonics, providing flat and low-loss alternatives to traditional optical elements. These structures' performance is driven by carefully engineered optical resonances. Researchers can predict and understand these resonances through full-wave finite element simulation and semianalytical multipole decomposition in COMSOL Multiphysics® software. Dr. Pavel Terekhov, a postdoctoral researcher at National Institute of Standards and Technology, will explain how a single quadrumer meta-atom, originally designed for magnetic octupole response, can exhibit two distinct light manipulation regimes. By arranging these quadrumers into a periodic crystalline silicon metasurface, anomalous absorption enhancement can be achieved, resulting from two independent multipole mechanisms working together. Dr. Terekhov will also discuss ongoing work on a gallium nitride metasurface, where four different multipoles interact to shape reflection and transmission spectra, including quasi-bound-states-in-the-continuum (q-BIC) manipulation. Through COMSOL Multiphysics® and multipole decomposition, attendees will learn how to transform abstract resonance behavior into practical design rules with COMSOL Multiphysics®. This multipole-based simulation approach is not just a diagnostic tool but a powerful design strategy that enables the precise control of absorption, reflection, and transmission in dielectric metasurfaces, with applications in sensing, energy harvesting, and flat optics.",
  "summary": "Dielectric metasurfaces have moved to the forefront of nanophotonics, offering flat, low-loss alternatives to conventional bulk optical elements for controlling the amplitude, phase, and polarization of light. These structures are of growing interest to researchers and engineers working on sensing, energy harvesting, and flat optics, as their performance hinges on precisely engineered optical…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}