Intrinsic Superchirality in Planar Plasmonic Metasurfaces

• DOI: 10.1021/acs.nanolett.4c02530
• Publication Date: 2024-08-06T18:12:10Z
• Authors: Giovanna Palermo; Massimo Rippa; Dante M. Aceti; Alexa Guglielmelli; Liliana Valente; Domenico Sagnelli; Amalia D’Avino; Bryan Guilcapi; Nicolò Maccaferri; Lucia Petti; Giuseppe Strangi
• Keywords: Nanophotonics; Equilateral triangle

Plasmonic metasurfaces with spatial symmetry breaking are crucial materials significant applications in fields such as polarization-controlled photonic devices and nanophotonic platforms for chiral sensing. In this paper, we introduce planar plasmonic metasurfaces, less than one-tenth of a wavelength thick, featuring nanocavities formed by three equilateral triangles. This configuration creates uniform, thin metasurfaces. Through combination experimental measurements numerical modeling, demonstrate the inherent superchirality these We address challenge achieving strong enhancement optical chirality visible spectrum, reaching levels comparable to those 3D