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Tuning the chiro-plasmonic response using high refractive index-dielectric templates

Nair, Greshma and Singh, Haobijam Johnson and Ghosh, Ambarish (2015) Tuning the chiro-plasmonic response using high refractive index-dielectric templates. In: JOURNAL OF MATERIALS CHEMISTRY C, 3 (26). pp. 6831-6835.

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Official URL: http://dx.doi.org/10.1039/c5tc00922g

Abstract

Chiral metamaterials have recently gained attention due to their applicability in developing polarization devices and in the detection of chiral molecules. A common approach towards fabricating plasmonic chiral nanostructures has been decorating metallic nanoparticles on dielectric chiral scaffolds, such as a helix. This resulted in the generation of a large chiro-optical response over a wide range of the electromagnetic spectrum. It has been shown previously that the optical tunability of these chiral metamaterials depends on the geometrical aspects of the overall structure, as well as the nature of the plasmonic constituents. In this study, we have investigated the role of the underlying dielectric scaffold with numerical simulations, and experimentally demonstrated that it is possible to enhance and engineer their chiro-plasmonic response significantly by choosing dielectric scaffolds of appropriate materials.

Item Type: Journal Article
Additional Information: Copyright for this article is belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Division of Interdisciplinary Research > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 01 Aug 2015 05:17
Last Modified: 01 Aug 2015 05:17
URI: http://eprints.iisc.ac.in/id/eprint/52012

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