Cargando…

Identification of Tequila with an Array of ZnO Thin Films: A Simple and Cost-Effective Method

An array of ZnO thin film sensors was obtained by thermal oxidation of physical vapor deposited thin Zn films. Different conditions of the thermal treatment (duration and temperature) were applied in view of obtaining ZnO sensors with different gas sensing properties. Films having undergone a long t...

Descripción completa

Detalles Bibliográficos
Autores principales: Acuña-Avila, Pedro Estanislao, Calavia, Raúl, Vigueras-Santiago, Enrique, Llobet, Eduard
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5751739/
https://www.ncbi.nlm.nih.gov/pubmed/29257051
http://dx.doi.org/10.3390/s17122943
_version_ 1783290010789740544
author Acuña-Avila, Pedro Estanislao
Calavia, Raúl
Vigueras-Santiago, Enrique
Llobet, Eduard
author_facet Acuña-Avila, Pedro Estanislao
Calavia, Raúl
Vigueras-Santiago, Enrique
Llobet, Eduard
author_sort Acuña-Avila, Pedro Estanislao
collection PubMed
description An array of ZnO thin film sensors was obtained by thermal oxidation of physical vapor deposited thin Zn films. Different conditions of the thermal treatment (duration and temperature) were applied in view of obtaining ZnO sensors with different gas sensing properties. Films having undergone a long thermal treatment exhibited high responses to low ethanol concentrations, while short thermal treatments generally led to sensors with high ethanol sensitivity. The sensor array was used to distinguish among Tequilas and Agave liquor. Linear discriminant analysis and the multilayer perceptron neural network reached 100% and 86.3% success rates in the discrimination between real Tequila and Agave liquor and in the identification of Tequila brands, respectively. These results are promising for the development of an inexpensive tool offering low complexity and cost of analysis for detecting fraud in spirits.
format Online
Article
Text
id pubmed-5751739
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-57517392018-01-10 Identification of Tequila with an Array of ZnO Thin Films: A Simple and Cost-Effective Method Acuña-Avila, Pedro Estanislao Calavia, Raúl Vigueras-Santiago, Enrique Llobet, Eduard Sensors (Basel) Article An array of ZnO thin film sensors was obtained by thermal oxidation of physical vapor deposited thin Zn films. Different conditions of the thermal treatment (duration and temperature) were applied in view of obtaining ZnO sensors with different gas sensing properties. Films having undergone a long thermal treatment exhibited high responses to low ethanol concentrations, while short thermal treatments generally led to sensors with high ethanol sensitivity. The sensor array was used to distinguish among Tequilas and Agave liquor. Linear discriminant analysis and the multilayer perceptron neural network reached 100% and 86.3% success rates in the discrimination between real Tequila and Agave liquor and in the identification of Tequila brands, respectively. These results are promising for the development of an inexpensive tool offering low complexity and cost of analysis for detecting fraud in spirits. MDPI 2017-12-19 /pmc/articles/PMC5751739/ /pubmed/29257051 http://dx.doi.org/10.3390/s17122943 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Acuña-Avila, Pedro Estanislao
Calavia, Raúl
Vigueras-Santiago, Enrique
Llobet, Eduard
Identification of Tequila with an Array of ZnO Thin Films: A Simple and Cost-Effective Method
title Identification of Tequila with an Array of ZnO Thin Films: A Simple and Cost-Effective Method
title_full Identification of Tequila with an Array of ZnO Thin Films: A Simple and Cost-Effective Method
title_fullStr Identification of Tequila with an Array of ZnO Thin Films: A Simple and Cost-Effective Method
title_full_unstemmed Identification of Tequila with an Array of ZnO Thin Films: A Simple and Cost-Effective Method
title_short Identification of Tequila with an Array of ZnO Thin Films: A Simple and Cost-Effective Method
title_sort identification of tequila with an array of zno thin films: a simple and cost-effective method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5751739/
https://www.ncbi.nlm.nih.gov/pubmed/29257051
http://dx.doi.org/10.3390/s17122943
work_keys_str_mv AT acunaavilapedroestanislao identificationoftequilawithanarrayofznothinfilmsasimpleandcosteffectivemethod
AT calaviaraul identificationoftequilawithanarrayofznothinfilmsasimpleandcosteffectivemethod
AT viguerassantiagoenrique identificationoftequilawithanarrayofznothinfilmsasimpleandcosteffectivemethod
AT llobeteduard identificationoftequilawithanarrayofznothinfilmsasimpleandcosteffectivemethod