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Surface-enhanced infrared spectroscopy using metal oxide plasmonic antenna arrays

Surface-enhanced infrared spectroscopy using metal oxide plasmonic antenna arrays
Surface-enhanced infrared spectroscopy using metal oxide plasmonic antenna arrays
We successfully demonstrate surface-enhanced infrared spectroscopy using arrays of indium tin oxide (ITO) plasmonic nanoantennas. The ITO antennas show a strongly reduced plasmon wavelength, which holds promise for ultracompact antenna arrays and extremely subwavelength metamaterials. The strong plasmon confinement and reduced antenna cross section allows ITO antennas to be integrated at extremely high densities with no loss in performance due to long-range transverse interactions. By further reducing the spacing of antennas in the arrays, we access the regime of plasmonic near field coupling where the response is enhanced for both Au and ITO devices. Ultracompact ITO antennas with high spatial and spectral selectivity in spectroscopic applications offer a viable new platform for infrared plasmonics, which may be combined with other functionalities of these versatile materials in devices.
1530-6984
346-352
Abb, Martina
d1aa3add-7761-4c4f-8a3d-7da3084deb33
Wang, Yudong
c48bcc7c-4cb4-468c-af4e-d1e601222009
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
de Groot, C.H.
92cd2e02-fcc4-43da-8816-c86f966be90c
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9
Abb, Martina
d1aa3add-7761-4c4f-8a3d-7da3084deb33
Wang, Yudong
c48bcc7c-4cb4-468c-af4e-d1e601222009
Papasimakis, Nikitas
f416bfa9-544c-4a3e-8a2d-bc1c11133a51
de Groot, C.H.
92cd2e02-fcc4-43da-8816-c86f966be90c
Muskens, Otto L.
2284101a-f9ef-4d79-8951-a6cda5bfc7f9

Abb, Martina, Wang, Yudong, Papasimakis, Nikitas, de Groot, C.H. and Muskens, Otto L. (2014) Surface-enhanced infrared spectroscopy using metal oxide plasmonic antenna arrays. Nano Letters, 14 (1), 346-352. (doi:10.1021/nl404115g).

Record type: Article

Abstract

We successfully demonstrate surface-enhanced infrared spectroscopy using arrays of indium tin oxide (ITO) plasmonic nanoantennas. The ITO antennas show a strongly reduced plasmon wavelength, which holds promise for ultracompact antenna arrays and extremely subwavelength metamaterials. The strong plasmon confinement and reduced antenna cross section allows ITO antennas to be integrated at extremely high densities with no loss in performance due to long-range transverse interactions. By further reducing the spacing of antennas in the arrays, we access the regime of plasmonic near field coupling where the response is enhanced for both Au and ITO devices. Ultracompact ITO antennas with high spatial and spectral selectivity in spectroscopic applications offer a viable new platform for infrared plasmonics, which may be combined with other functionalities of these versatile materials in devices.

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Accepted/In Press date: 10 December 2013
e-pub ahead of print date: 16 December 2013
Published date: 8 January 2014
Organisations: Optoelectronics Research Centre, Nanoelectronics and Nanotechnology, Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 362790
URI: http://eprints.soton.ac.uk/id/eprint/362790
ISSN: 1530-6984
PURE UUID: 18ca4e9b-e1ba-471f-a3dc-9ae12b2934be
ORCID for Nikitas Papasimakis: ORCID iD orcid.org/0000-0002-6347-6466
ORCID for C.H. de Groot: ORCID iD orcid.org/0000-0002-3850-7101
ORCID for Otto L. Muskens: ORCID iD orcid.org/0000-0003-0693-5504

Catalogue record

Date deposited: 10 Mar 2014 12:02
Last modified: 03 Dec 2019 01:52

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