Issue 17, 2016
From the journal:

Analyst

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

Woong Kim,‡a   Nara Kim,‡b   Eunbyoul Lee,§c   Duckhoe Kim,a   Zee Hwan Kim*b  and  Joon Won Park*a  

* Corresponding authors

a Department of Chemistry, Pohang University of Science and Technology, Pohang, Republic of Korea
E-mail: jwpark@postech.ac.kr

b Department of Chemistry, Seoul National University, Seoul 151-742, Korea
E-mail: zhkim@snu.ac.kr

c Department of Chemistry, Korea University, Seoul 136-701, Korea

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

DOI
https://doi.org/10.1039/C6AN00035E
Article type
Communication
Submitted
06 янв 2016
Accepted
17 фев 2016
First published
17 фев 2016
This article is Open Access
Creative Commons BY license

Analyst, 2016,141, 5066-5070

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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

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