Plasmon resonances on opto-capacitive nanostructures

Shahcheraghi, N; Dowd, AR; Arnold, M; Cortie, M

Plasmon resonances on opto-capacitive nanostructures

Shahcheraghi, N Dowd, AR Arnold, M

Cortie, M

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Publisher:: SPIE
Publication Type:: Journal Article
Citation:: Proceedings Volume 9668, Micro+Nano Materials, Devices, and Systems, 2015, 9668
Issue Date:: 2015-12-22

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Field	Value	Language
dc.contributor.author	Shahcheraghi, N	en_US
dc.contributor.author	Dowd, AR	en_US
dc.contributor.author	Arnold, M https://orcid.org/0000-0003-4164-0242	en_US
dc.contributor.author	Cortie, M https://orcid.org/0000-0003-3202-6398	en_US
dc.date.issued	2015-12-22	en_US
dc.identifier.citation	Proceedings Volume 9668, Micro+Nano Materials, Devices, and Systems, 2015, 9668	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125634
dc.description.abstract	Silver is considered as one of the most desirable materials for plasmonic devices due to it having low loss, low epsilon2, across the visible spectrum. In addition, silver nanotriangles can self-assemble into complex structures that can include tip-totip or base-to-base arrangements. While the optical properties of tip-to-tip dimers of nanotriangles have been quite intensively studied, the geometric inverse, the base-to-base configuration, has received much less attention. Here we report the results of a computational study of the optical response of this latter configuration. Calculations were performed using the discrete dipole approximation. The effect of gap size and substrate are considered. The results indicate that the base-to-base configuration can sustain a strong coupled dipole and various multimode resonances. The pairing of the parallel triangle edges produces a strongly capacitive configuration and very intense electric fields over an extended volume of space. Therefore, the base-to-base configuration could be suitable for a range of plasmonic applications that require a strong and uniform concentration of electric field. Examples include refractometeric sensing or metal-enhanced fluorescence.	en_US
dc.publisher	SPIE	en_US
dc.relation	http://purl.org/au-research/grants/arc/DP120102545
dc.relation.ispartof	Proceedings Volume 9668, Micro+Nano Materials, Devices, and Systems	en_US
dc.relation.isbasedon	10.1117/12.2202282	en_US
dc.rights	Copyright 2015 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.	en_US
dc.title	Plasmon resonances on opto-capacitive nanostructures	en_US
dc.type	Journal Article
utslib.citation.volume	9668	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access
pubs.consider-herdc	false	en_US
pubs.publication-status	Published	en_US
pubs.volume	9668	en_US

Abstract:

Silver is considered as one of the most desirable materials for plasmonic devices due to it having low loss, low epsilon2, across the visible spectrum. In addition, silver nanotriangles can self-assemble into complex structures that can include tip-totip or base-to-base arrangements. While the optical properties of tip-to-tip dimers of nanotriangles have been quite intensively studied, the geometric inverse, the base-to-base configuration, has received much less attention. Here we report the results of a computational study of the optical response of this latter configuration. Calculations were performed using the discrete dipole approximation. The effect of gap size and substrate are considered. The results indicate that the base-to-base configuration can sustain a strong coupled dipole and various multimode resonances. The pairing of the parallel triangle edges produces a strongly capacitive configuration and very intense electric fields over an extended volume of space. Therefore, the base-to-base configuration could be suitable for a range of plasmonic applications that require a strong and uniform concentration of electric field. Examples include refractometeric sensing or metal-enhanced fluorescence.

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http://hdl.handle.net/10453/125634