Nanosphere Templated Metallic Grating Assisted Enhanced Fluorescence

Kannadorai, Ravi Kumar and Dinish, US and Fu, Chit Yaw and Hegde, Gopalkrishna and Olivo, Malini and Asundi, Anand (2012) Nanosphere Templated Metallic Grating Assisted Enhanced Fluorescence. In: JOURNAL OF FLUORESCENCE, 22 (2). pp. 609-614.

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Abstract

In this paper, enhanced fluorescence from a silver film coated nanosphere templated grating is presented. Initially, numerical simulation was performed to determine the plasmon resonance wavelength by varying the thickness of the silver film on top of a monolayer of 400 nm nanospheres. The simulation results are verified experimentally and tested for enhancing fluorescence from fluorescein isothiocyanate whose excitation wavelength closely matches with the plasmon resonance wavelength of the substrate with 100 nm silver film over nanosphere. The 12 times enhancement in the intensity is attributed to the local field enhancement in addition to the excitation of surface plasmon polaritons along the surface.

Item Type:	Journal Article
Publication:	JOURNAL OF FLUORESCENCE
Publisher:	SPRINGER/PLENUM PUBLISHERS
Additional Information:	Copyright for this article belongs to SPRINGER/PLENUM PUBLISHERS
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	30 Jul 2012 06:07
Last Modified:	30 Jul 2012 06:07
URI:	http://eprints.iisc.ac.in/id/eprint/44533

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