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Issue 15, 2013
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Sensing dielectric media on the nanoscale with freely oriented gold nanorods

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Abstract

In this work we demonstrate that freely oriented individual gold nanorods (GNRs) can be used for sensing variations of the refractive index at the interface between two dielectric media. Both the elastic scattering and the luminescence signal of individual GNRs have been used to characterize the dielectric medium surrounding the particles. The scattering signal depends strongly on the distance from the focusing interface and the refractive index mismatch at the focusing interface, while the luminescence signal is only influenced by the last parameter. We used radially and azimuthally polarized light as an excitation source to directly determine the orientation of individual gold nanorods embedded within a dielectric medium.

Graphical abstract: Sensing dielectric media on the nanoscale with freely oriented gold nanorods

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Article information


Submitted
08 Nov 2012
Accepted
31 Jan 2013
First published
18 Feb 2013

Phys. Chem. Chem. Phys., 2013,15, 5407-5414
Article type
Paper

Sensing dielectric media on the nanoscale with freely oriented gold nanorods

F. Wackenhut, A. V. Failla and A. J. Meixner, Phys. Chem. Chem. Phys., 2013, 15, 5407
DOI: 10.1039/C3CP43988G

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