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Issue 17, 2016

A tunable Au core–Ag shell nanoparticle tip for tip-enhanced spectroscopy

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Abstract

A single Au nanoparticle (NP) with a diameter of 5 nm was transferred to the end of a Si-tip through a picking process, and an Ag shell with a controlled thickness was formed on the Au core. By carrying out tip-enhanced Raman scattering (TERS) measurements on biphenyl-4-thiol (BPT) with the Au@Ag NP–tip (overall diameter of 22–60 nm), we confirm that such tips show a plasmonic local-field enhancement which is sufficient for tip-enhanced spectro-microscopy.

Graphical abstract: A tunable Au core–Ag shell nanoparticle tip for tip-enhanced spectroscopy

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Article information


Submitted
06 Jan 2016
Accepted
17 Feb 2016
First published
17 Feb 2016

This article is Open Access

Analyst, 2016,141, 5066-5070
Article type
Communication

A tunable Au core–Ag shell nanoparticle tip for tip-enhanced spectroscopy

W. Kim, N. Kim, E. Lee, D. Kim, Z. Hwan Kim and J. Won Park, Analyst, 2016, 141, 5066 DOI: 10.1039/C6AN00035E

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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