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Single crystal gold tips for tip-enhanced Raman spectroscopy.

Roy, D; Williams, C M; Mingard, K (2010) Single crystal gold tips for tip-enhanced Raman spectroscopy. J. Vac. Sci. Technol. B, 28 (3). pp. 631-634.

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Abstract

The authors have investigated the structures of gold tips suitable for TERS fabricated by electrochemical etching technique reported before1.In this work they attempt to find an answer- why some of the chemically etched tips did not produce TERS signal and suggest possible ways of improving the reproducibility of the enhancement factor by fabricating single-crystal tips. Tips with single crystalline tip-ends and polycrystalline tip-ends were studied by electron backscattered diffraction (EBSD). It was also checked whether they produced appreciable TERS signals. Tips with single crystalline tip-end appeared to improve their chances of producing TERS signal. The surface plasmon resonance energy of these less defective single crystal tips is more reproducible in comparison to polycrystalline tips containing grain-boundaries and various other defects.

Item Type: Article
Subjects: Nanoscience
Nanoscience > Surface and Nanoanalysis
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/4676

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