Macias, G., Sperling, J. R. , Peveler, W. J. , Burley, G. A., Neale, S. L. and Clark, A. W. (2019) Whisky tasting using a bimetallic nanoplasmonic tongue. Nanoscale, 11(32), pp. 15216-15223. (doi: 10.1039/C9NR04583J) (PMID:31384879)
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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 comprised of 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.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Peveler, Dr William and Clark, Professor Alasdair and Burley, Dr Glenn and Sperling, Dr Justin and Macias Sotuela, Dr Gerard and Neale, Professor Steven |
| Authors: | Macias, G., Sperling, J. R., Peveler, W. J., Burley, G. A., Neale, S. L., and Clark, A. W. |
| College/School: | College of Science and Engineering > School of Chemistry College of Science and Engineering > School of Engineering > Biomedical Engineering College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Nanoscale |
| Publisher: | Royal Society of Chemistry |
| ISSN: | 2040-3364 |
| ISSN (Online): | 2040-3372 |
| Published Online: | 03 July 2019 |
| Copyright Holders: | Copyright © 2019 The Royal Society of Chemistry |
| First Published: | First published in Nanoscale 11(32): 15216-15223 |
| Publisher Policy: | Reproduced under a Creative Commons License |
| Data DOI: | 10.5525/gla.researchdata.760 |
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