Hybrid metal-dielectric resonator for anapole-assisted enhanced chiral sensing applications

Guillermo Serrera; Javier González-Colsa; Pablo Albella

doi:10.1117/12.3016259

11 June 2024 Hybrid metal-dielectric resonator for anapole-assisted enhanced chiral sensing applications

Guillermo Serrera, Javier González-Colsa, Pablo Albella

Proceedings Volume PC12990, Metamaterials XIV; PC1299006 (2024) https://doi.org/10.1117/12.3016259
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

The concept of chirality is of utmost importance for the biological functionality of many molecules in the human body and pharmacological compounds. This fact has led to a growing industrial interest into the discrimination of molecular chirality, where the challenge to enhance the intrinsically weak Circular Dichroism (CD) chiroptical effect has been approached from the field of nanophotonics, using metals, high refractive index dielectric materials and hybrid structures with electric and magnetic resonances. Here, we will present our current research on this topic. Using numerical simulations aided by multipole decomposition analysis, we demonstrate how a simple hybrid gold-silicon metasurface can exploit the superposition of several resonances with non-radiating anapole states, providing remarkable conditions for the enhancement of the CD effect in the near-infrared spectrum. We will also show how the usage of these anapole states can be linked to enhanced Third Harmonic Generation, paving the way towards background-free CD signals.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Guillermo Serrera, Javier González-Colsa, and Pablo Albella "Hybrid metal-dielectric resonator for anapole-assisted enhanced chiral sensing applications", Proc. SPIE PC12990, Metamaterials XIV, PC1299006 (11 June 2024); https://doi.org/10.1117/12.3016259

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