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Illumination Dependent Optical Properties of Plasmonic Nanorods Coupled to Thin-Film Cavities
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO.
2016 (English)In: Plasmonics, ISSN 1557-1955, E-ISSN 1557-1963, Vol. 11, no 4, 1101-1107 p.Article in journal (Refereed) PublishedText
Abstract [en]

The scattering spectra and intensity of gold nanorods placed at varied distances above gold films have been simulated and measured under various conditions, demonstrating that scattering characteristics of the nanorod-film system are highly dependent on illumination conditions. Studying the surrounding electric fields of nanorods reveals that the illumination-dependent properties of the system are induced by the interference in the nanorod-film system. Both simulations and experiments show that optimising the nanorod-film distance can greatly enhance scattering magnitudes up to similar to 20 times for certain illumination conditions. We propose an application of the studied system in facilitating photo-thermal conversion.

Place, publisher, year, edition, pages
2016. Vol. 11, no 4, 1101-1107 p.
Keyword [en]
Gold nanorod, Thin-film, Fabry-Perot cavity, Illumination-dependence photo-thermal effect
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:kth:diva-190658DOI: 10.1007/s11468-015-0148-3ISI: 000379179300020ScopusID: 2-s2.0-84949525208OAI: diva2:953217

QC 20160817

Available from: 2016-08-17 Created: 2016-08-12 Last updated: 2016-08-17Bibliographically approved

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Qiu, Min
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