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Lookup NU author(s): Dr Billy Murdoch, Dr Jose Portoles, Dr Sabrina Tardio, Dr Anders Barlow, Professor Ian Fletcher, Professor Peter Cumpson
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
Visible wavelength surface-enhanced Raman spectroscopy (SERS) has been observed from bovine serum albumin (BSA) using In-InP nanopillars synthesised by Ar gas cluster ion beam sputtering of InP wafers. InP provides a high local refractive index for plasmonic In structures, which increases the wavelength of the In surface plasmon resonance. The Raman scattering signal was determined to be up to 285 times higher for BSA deposited onto In-InP nanopillars when compared with Si wafer substrates. These substrates demonstrate the label-free detection of biomolecules by visible wavelength SERS, without the use of noble metal particles.
Author(s): Murdoch B, Portoles J, Tardio S, Barlow A, Fletcher I, Cumpson P
Publication type: Article
Publication status: Published
Journal: Applied Physics Letters
Year: 2016
Volume: 109
Issue: 25
Print publication date: 19/12/2016
Online publication date: 19/12/2016
Acceptance date: 07/12/2016
Date deposited: 14/12/2016
ISSN (print): 0003-6951
ISSN (electronic): 1077-3118
Publisher: AIP Publishing
URL: http://dx.doi.org/10.1063/1.4972558
DOI: 10.1063/1.4972558
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