Plasmon hybridization and field confinement in multilayer metal-dielectric nanocups

Frederiksen, M; Bochenkov, VE; Cortie, MB; Sutherland, DS

Plasmon hybridization and field confinement in multilayer metal-dielectric nanocups

Frederiksen, M Bochenkov, VE Cortie, MB

Sutherland, DS

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Publication Type:: Journal Article
Citation:: Journal of Physical Chemistry C, 2013, 117 (30), pp. 15782 - 15789
Issue Date:: 2013-08-01

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Field	Value	Language
dc.contributor.author	Frederiksen, M	en_US
dc.contributor.author	Bochenkov, VE	en_US
dc.contributor.author	Cortie, MB https://orcid.org/0000-0003-3202-6398	en_US
dc.contributor.author	Sutherland, DS	en_US
dc.date.issued	2013-08-01	en_US
dc.identifier.citation	Journal of Physical Chemistry C, 2013, 117 (30), pp. 15782 - 15789	en_US
dc.identifier.issn	1932-7447	en_US
dc.identifier.uri	http://hdl.handle.net/10453/26446
dc.description.abstract	Large-area arrays of dispersed multilayer gold-dielectric nanocups were fabricated by colloidal lithography and studied by extinction spectroscopy. Hybridization of the elemental plasmons of the individual nanocups gave rise to new resonance peaks in the visible and near-infrared regions of the extinction spectrum. Transmission electron microscopy was used to confirm the fabricated structure geometry, and the optical properties of the arrays were studied by UV-vis-NIR spectroscopy and finite-difference time-domain (FDTD) simulations. The nature of the resonances was elucidated from E-field plots and charge plots showing clear hybridized modes. We observe a dominant hybridized dipolar mode combining a bonding and antibonding mode at the two caps. A high-energy antibonding (antisymmetric) quadrupolar mode of an individual nanocup is revealed through hybridization with an elemental mode on the second nanocup. A low-energy tunable cavity mode with a very small mode volume is observed in the near-IR range. © 2013 American Chemical Society.	en_US
dc.relation.ispartof	Journal of Physical Chemistry C	en_US
dc.relation.isbasedon	10.1021/jp402613u	en_US
dc.subject.classification	Physical Chemistry	en_US
dc.title	Plasmon hybridization and field confinement in multilayer metal-dielectric nanocups	en_US
dc.type	Journal Article
utslib.citation.volume	30	en_US
utslib.citation.volume	117	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
utslib.for	10 Technology	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	closed_access
pubs.issue	30	en_US
pubs.publication-status	Published	en_US
pubs.volume	117	en_US

Abstract:

Large-area arrays of dispersed multilayer gold-dielectric nanocups were fabricated by colloidal lithography and studied by extinction spectroscopy. Hybridization of the elemental plasmons of the individual nanocups gave rise to new resonance peaks in the visible and near-infrared regions of the extinction spectrum. Transmission electron microscopy was used to confirm the fabricated structure geometry, and the optical properties of the arrays were studied by UV-vis-NIR spectroscopy and finite-difference time-domain (FDTD) simulations. The nature of the resonances was elucidated from E-field plots and charge plots showing clear hybridized modes. We observe a dominant hybridized dipolar mode combining a bonding and antibonding mode at the two caps. A high-energy antibonding (antisymmetric) quadrupolar mode of an individual nanocup is revealed through hybridization with an elemental mode on the second nanocup. A low-energy tunable cavity mode with a very small mode volume is observed in the near-IR range. © 2013 American Chemical Society.

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