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Chiro-optical response in helically arranged achiral dielectric nanoparticles

Singh, HJ and Ghosh, A (2018) Chiro-optical response in helically arranged achiral dielectric nanoparticles. In: Journal of Materials Chemistry C, 6 (10). pp. 2430-2434.

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Official URL: https://doi.org/10.1039/c8tc00085a


We demonstrate experimentally how achiral dielectric nanoparticles when arranged in a chiral geometry can exhibit chiro-optical activity. Such a response originates in the dynamic electromagnetic interactions between the resonant modes of the individual nanoparticles, as confirmed by numerical simulations. When such nanoparticles are extended into an infinite periodic array, additional chiro-optical bands were induced at the lattice/collective modes of the nanoparticle system which have been experimentally observed. Our fabrication method is wafer scale and the material platform is low loss and CMOS-compatible, which together can allow a seamless integration of this novel material system into existing optoelectronic technologies.

Item Type: Journal Article
Publication: Journal of Materials Chemistry C
Publisher: Royal Society of Chemistry
Additional Information: The copyright for this article belongs to the Royal Society of Chemistry.
Keywords: Electromagnetic simulation; Optical lattices, Dielectric nanoparticles; Dynamic electromagnetic; Fabrication method; Individual nanoparticles; Nanoparticle systems; Novel material system; Optoelectronic technology; Seamless integration, Nanoparticles
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 22 Aug 2022 09:07
Last Modified: 22 Aug 2022 09:07
URI: https://eprints.iisc.ac.in/id/eprint/76113

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