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Issue 18, 2015
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Guided formation of sub-5 nm interstitial gaps between plasmonic nanodisks

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Abstract

To achieve a reliable formation of a surface-enhanced Raman scattering (SERS) sensor with evenly distributed hot spots on a wafer scale substrate, we propose a hybrid approach combining physical nanolithography for preparing Au nanodisks and chemical Au reduction for growing them. During the chemical growth, the interstitial distance between the nanodisks decreased from 60 nm to sub-5 nm. The resulting patterns of the nanogap-rich Au nanodisks successfully enhance the SERS signal, and its intensity map shows only a 5% or less signal variation on the entire sample.

Graphical abstract: Guided formation of sub-5 nm interstitial gaps between plasmonic nanodisks

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Publication details

The article was received on 27 Feb 2015, accepted on 06 Apr 2015 and first published on 13 Apr 2015


Article type: Communication
DOI: 10.1039/C5NR01317H
Author version available: Download Author version (PDF)
Citation: Nanoscale, 2015,7, 8338-8342
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    Guided formation of sub-5 nm interstitial gaps between plasmonic nanodisks

    J. G. Son, S. W. Han, J. Wi and T. G. Lee, Nanoscale, 2015, 7, 8338
    DOI: 10.1039/C5NR01317H

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