Facile fabrication of nanoapertures with tunable plasmonic resonances

Pillanagrovi, Jayakumar and Dutta-Gupta, S. (2022) Facile fabrication of nanoapertures with tunable plasmonic resonances. In: 2022 Workshop on Recent Advances in Photonics, WRAP 2022, 4 March 2022 through 6 March 2022, Mumbai.

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Abstract

In the present work, we fabricate nano-apertures (NAs) in gold thin films using shadow sphere lithography exhibiting tunable plasmonic resonances. The control over the plasmon resonances is achieved by varying the conditions used for the shadow sphere lithography process. Two different sizes of masks have been used to realize apertures of different diameters. Furthermore, the effect of thickness on the optical response have been investigated. From single aperture scattering measurements, it is seen that on increasing the mask size, the resonance wavelength shifted towards higher wavelengths. In contrary, increasing the thickness of the gold thin films results in a blue shift of the resonance. © 2022 IEEE.

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IITH Creators:	IITH Creators ORCiD Dutta-Gupta, S. UNSPECIFIED
Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	nano apertures; Plasmonics; shadow sphere lithography; thickness of film
Subjects:	Others > Metallurgy Metallurgical Engineering Materials Engineering > Materials engineering
Divisions:	Department of Material Science Engineering
Depositing User:	. LibTrainee 2021
Date Deposited:	20 Jul 2022 07:38
Last Modified:	20 Jul 2022 07:38
URI:	http://raiithold.iith.ac.in/id/eprint/9802
Publisher URL:	http://doi.org/10.1109/WRAP54064.2022.9758360
Related URLs:	Author

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