Cargando…

Surface Enhancement Using Black Coatings for Sensor Applications

The resolution of a quartz crystal microbalance (QCM) is particularly crucial for gas sensor applications where low concentrations are detected. This resolution can be improved by increasing the effective surface of QCM electrodes and, thereby, enhancing their sensitivity. For this purpose, various...

Descripción completa

Detalles Bibliográficos
Autores principales: Hruška, Martin, More-Chevalier, Joris, Fitl, Přemysl, Novotný, Michal, Hruška, Petr, Prokop, Dejan, Pokorný, Petr, Kejzlar, Jan, Gadenne, Virginie, Patrone, Lionel, Vrňata, Martin, Lančok, Jan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9738287/
https://www.ncbi.nlm.nih.gov/pubmed/36500920
http://dx.doi.org/10.3390/nano12234297
_version_ 1784847502515634176
author Hruška, Martin
More-Chevalier, Joris
Fitl, Přemysl
Novotný, Michal
Hruška, Petr
Prokop, Dejan
Pokorný, Petr
Kejzlar, Jan
Gadenne, Virginie
Patrone, Lionel
Vrňata, Martin
Lančok, Jan
author_facet Hruška, Martin
More-Chevalier, Joris
Fitl, Přemysl
Novotný, Michal
Hruška, Petr
Prokop, Dejan
Pokorný, Petr
Kejzlar, Jan
Gadenne, Virginie
Patrone, Lionel
Vrňata, Martin
Lančok, Jan
author_sort Hruška, Martin
collection PubMed
description The resolution of a quartz crystal microbalance (QCM) is particularly crucial for gas sensor applications where low concentrations are detected. This resolution can be improved by increasing the effective surface of QCM electrodes and, thereby, enhancing their sensitivity. For this purpose, various researchers have investigated the use of micro-structured materials with promising results. Herein, we propose the use of easy-to-manufacture metal blacks that are highly structured even on a nanoscale level and thus provide more bonding sites for gas analytes. Two different black metals with thicknesses of 280 nm, black aluminum (B-Al) and black gold (B-Au), were deposited onto the sensor surface to improve the sensitivity following the Sauerbrey equation. Both layers present a high surface roughness due to their cauliflower morphology structure. A high response (i.e., resonant frequency shift) of these QCM sensors coated with a black metal layer was obtained. Two gaseous analytes, H(2)O vapor and EtOH vapor, at different concentrations, are tested, and a distinct improvement of sensitivity is observed for the QCM sensors coated with a black metal layer compared to the blank ones, without strong side effects on resonance frequency stability or mechanical quality factor. An approximately 10 times higher sensitivity to EtOH gas is reported for the QCM coated with a black gold layer compared to the blank QCM sensor.
format Online
Article
Text
id pubmed-9738287
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-97382872022-12-11 Surface Enhancement Using Black Coatings for Sensor Applications Hruška, Martin More-Chevalier, Joris Fitl, Přemysl Novotný, Michal Hruška, Petr Prokop, Dejan Pokorný, Petr Kejzlar, Jan Gadenne, Virginie Patrone, Lionel Vrňata, Martin Lančok, Jan Nanomaterials (Basel) Article The resolution of a quartz crystal microbalance (QCM) is particularly crucial for gas sensor applications where low concentrations are detected. This resolution can be improved by increasing the effective surface of QCM electrodes and, thereby, enhancing their sensitivity. For this purpose, various researchers have investigated the use of micro-structured materials with promising results. Herein, we propose the use of easy-to-manufacture metal blacks that are highly structured even on a nanoscale level and thus provide more bonding sites for gas analytes. Two different black metals with thicknesses of 280 nm, black aluminum (B-Al) and black gold (B-Au), were deposited onto the sensor surface to improve the sensitivity following the Sauerbrey equation. Both layers present a high surface roughness due to their cauliflower morphology structure. A high response (i.e., resonant frequency shift) of these QCM sensors coated with a black metal layer was obtained. Two gaseous analytes, H(2)O vapor and EtOH vapor, at different concentrations, are tested, and a distinct improvement of sensitivity is observed for the QCM sensors coated with a black metal layer compared to the blank ones, without strong side effects on resonance frequency stability or mechanical quality factor. An approximately 10 times higher sensitivity to EtOH gas is reported for the QCM coated with a black gold layer compared to the blank QCM sensor. MDPI 2022-12-03 /pmc/articles/PMC9738287/ /pubmed/36500920 http://dx.doi.org/10.3390/nano12234297 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Hruška, Martin
More-Chevalier, Joris
Fitl, Přemysl
Novotný, Michal
Hruška, Petr
Prokop, Dejan
Pokorný, Petr
Kejzlar, Jan
Gadenne, Virginie
Patrone, Lionel
Vrňata, Martin
Lančok, Jan
Surface Enhancement Using Black Coatings for Sensor Applications
title Surface Enhancement Using Black Coatings for Sensor Applications
title_full Surface Enhancement Using Black Coatings for Sensor Applications
title_fullStr Surface Enhancement Using Black Coatings for Sensor Applications
title_full_unstemmed Surface Enhancement Using Black Coatings for Sensor Applications
title_short Surface Enhancement Using Black Coatings for Sensor Applications
title_sort surface enhancement using black coatings for sensor applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9738287/
https://www.ncbi.nlm.nih.gov/pubmed/36500920
http://dx.doi.org/10.3390/nano12234297
work_keys_str_mv AT hruskamartin surfaceenhancementusingblackcoatingsforsensorapplications
AT morechevalierjoris surfaceenhancementusingblackcoatingsforsensorapplications
AT fitlpremysl surfaceenhancementusingblackcoatingsforsensorapplications
AT novotnymichal surfaceenhancementusingblackcoatingsforsensorapplications
AT hruskapetr surfaceenhancementusingblackcoatingsforsensorapplications
AT prokopdejan surfaceenhancementusingblackcoatingsforsensorapplications
AT pokornypetr surfaceenhancementusingblackcoatingsforsensorapplications
AT kejzlarjan surfaceenhancementusingblackcoatingsforsensorapplications
AT gadennevirginie surfaceenhancementusingblackcoatingsforsensorapplications
AT patronelionel surfaceenhancementusingblackcoatingsforsensorapplications
AT vrnatamartin surfaceenhancementusingblackcoatingsforsensorapplications
AT lancokjan surfaceenhancementusingblackcoatingsforsensorapplications