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Through-bottle whisky sensing and classification using Raman spectroscopy in an axicon-based backscattering configuration

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Fleming_2020_AM_Whisky_CC.pdf (629.4Kb)
Date
07/10/2020
Author
Fleming, Holly
Chen, Mingzhou
Bruce, Graham D.
Dholakia, Kishan
Keywords
QC Physics
DAS
Metadata
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Abstract
Non-intrusive detection systems have the potential to characterise materials through various transparent glass and plastic containers. Food and drink adulteration is increasingly problematic, representing a serious health risk as well as an economic issue. This is of particular concern for alcoholic spirits such as Scotch whisky which are often targeted for fraudulent activity. We have developed a Raman system with a novel geometry of excitation and collection, exploiting the beam propagation from an axicon lens, which results in an annular beam at the bottle surface before focusing within the sample. This facilitates the efficient acquisition of Raman signals from the alcoholic spirit contained inside the bottle, while avoiding the collection of auto-fluorescence signals generated by the bottle wall. Therefore, this technique provides a way of non-destructive and non-contact detection to precisely analyse the contents without the requirement to open the bottle.
Citation
Fleming , H , Chen , M , Bruce , G D & Dholakia , K 2020 , ' Through-bottle whisky sensing and classification using Raman spectroscopy in an axicon-based backscattering configuration ' , Analytical Methods , vol. 12 , no. 37 , pp. 4572-4578 . https://doi.org/10.1039/D0AY01101K
Publication
Analytical Methods
Status
Peer reviewed
DOI
https://doi.org/10.1039/D0AY01101K
ISSN
1759-9660
Type
Journal article
Rights
Copyright © 2020 The Author(s). Open Access article. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Description
Authors thank the UK Engineering and Physical Sciences Research Council for funding through grants EP/R004854/1 and EP/P030017/1.
Collections
  • University of St Andrews Research
URL
https://arxiv.org/abs/2005.13538
URI
http://hdl.handle.net/10023/20591

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