Whisky tasting using a bimetallic nanoplasmonic tongue
Macias, Gerard and Sperling, Justin Ryan and Peveler, William J. and Burley, Glenn A and Neale, Steven L. and Clark, Alasdair W. (2019) Whisky tasting using a bimetallic nanoplasmonic tongue. Nanoscale, 11 (32). pp. 15216-15223. ISSN 2040-3372
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Abstract
Metallic nanostructures are ideal candidates for optical tongue devices thanks to their chemical stability, the sensitivity of their plasmonic resonance to environmental changes, and their ease of chemical-functionalization. Here, we describe a reusable optical tongue comprising multiplexed gold and aluminum nano-arrays: a bimetallic device which produces two distinct resonance peaks for each sensing region. Through specific modification of these plasmonic arrays with orthogonal surface chemistries, we demonstrate that a dual-resonance device allows us to halve sensor sizes and data-acquisition times when compared to single-resonance, monometallic devices. We applied our bimetallic tongue to differentiate off-the-shelf whiskies with >99.7% accuracy by means of linear discriminant analysis (LDA). This advance in device miniaturization, functionalization, and multiplexed readout indicates nanoplasmonic tongues will have future applications in chemical mixture identification in applications where portability, reusability, and measurement speed are key.
Creators(s): | Macias, Gerard, Sperling, Justin Ryan, Peveler, William J., Burley, Glenn A, Neale, Steven L. and Clark, Alasdair W.; | Item type: | Article |
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ID code: | 69121 |
Keywords: | metallic nanostructures, optical tongue, bimetallic tongue, whisky, Chemistry, Chemistry(all) |
Subjects: | Science > Chemistry |
Department: | Faculty of Science > Pure and Applied Chemistry Technology and Innovation Centre > Bionanotechnology |
Depositing user: | Pure Administrator |
Date deposited: | 29 Jul 2019 14:25 |
Last modified: | 12 Feb 2021 03:52 |
URI: | https://strathprints.strath.ac.uk/id/eprint/69121 |
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