Cargando…

A Multiparameter Gas-Monitoring System Combining Functionalized and Non-Functionalized Microcantilevers

The aim of the study is to develop a compact, robust and maintenance free gas concentration and humidity monitoring system for industrial use in the field of inert process gases. Our multiparameter gas-monitoring system prototype allows the simultaneous measurement of the fluid physical properties (...

Descripción completa

Detalles Bibliográficos
Autores principales: Huber, Christof, Pina, Maria Pilar, Morales, Juan José, Mehdaoui, Alexandre
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143659/
https://www.ncbi.nlm.nih.gov/pubmed/32164168
http://dx.doi.org/10.3390/mi11030283
_version_ 1783519664370876416
author Huber, Christof
Pina, Maria Pilar
Morales, Juan José
Mehdaoui, Alexandre
author_facet Huber, Christof
Pina, Maria Pilar
Morales, Juan José
Mehdaoui, Alexandre
author_sort Huber, Christof
collection PubMed
description The aim of the study is to develop a compact, robust and maintenance free gas concentration and humidity monitoring system for industrial use in the field of inert process gases. Our multiparameter gas-monitoring system prototype allows the simultaneous measurement of the fluid physical properties (density, viscosity) and water vapor content (at ppm level) under varying process conditions. This approach is enabled by the combination of functionalized and non-functionalized resonating microcantilevers in a single sensing platform. Density and viscosity measuring performance is evaluated over a wide range of gases, temperatures and pressures with non-functionalized microcantilevers. For the humidity measurement, microporous Y-type zeolite and mesoporous silica MCM48 are evaluated as sensing materials. An easily scalable functionalization method to high-throughput production is herein adopted. Experimental results with functionalized microcantilevers exposed to water vapor (at ppm level) indicate that frequency changes cannot be attributed to a mass effect alone, but also stiffness effects dependent on adsorption of water and working temperature must be considered. To support this hypothesis, the mechanical response of such microcantilevers has been modelled considering both effects and the simulated results validated by comparison against experimental data.
format Online
Article
Text
id pubmed-7143659
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-71436592020-04-14 A Multiparameter Gas-Monitoring System Combining Functionalized and Non-Functionalized Microcantilevers Huber, Christof Pina, Maria Pilar Morales, Juan José Mehdaoui, Alexandre Micromachines (Basel) Article The aim of the study is to develop a compact, robust and maintenance free gas concentration and humidity monitoring system for industrial use in the field of inert process gases. Our multiparameter gas-monitoring system prototype allows the simultaneous measurement of the fluid physical properties (density, viscosity) and water vapor content (at ppm level) under varying process conditions. This approach is enabled by the combination of functionalized and non-functionalized resonating microcantilevers in a single sensing platform. Density and viscosity measuring performance is evaluated over a wide range of gases, temperatures and pressures with non-functionalized microcantilevers. For the humidity measurement, microporous Y-type zeolite and mesoporous silica MCM48 are evaluated as sensing materials. An easily scalable functionalization method to high-throughput production is herein adopted. Experimental results with functionalized microcantilevers exposed to water vapor (at ppm level) indicate that frequency changes cannot be attributed to a mass effect alone, but also stiffness effects dependent on adsorption of water and working temperature must be considered. To support this hypothesis, the mechanical response of such microcantilevers has been modelled considering both effects and the simulated results validated by comparison against experimental data. MDPI 2020-03-10 /pmc/articles/PMC7143659/ /pubmed/32164168 http://dx.doi.org/10.3390/mi11030283 Text en © 2020 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
Huber, Christof
Pina, Maria Pilar
Morales, Juan José
Mehdaoui, Alexandre
A Multiparameter Gas-Monitoring System Combining Functionalized and Non-Functionalized Microcantilevers
title A Multiparameter Gas-Monitoring System Combining Functionalized and Non-Functionalized Microcantilevers
title_full A Multiparameter Gas-Monitoring System Combining Functionalized and Non-Functionalized Microcantilevers
title_fullStr A Multiparameter Gas-Monitoring System Combining Functionalized and Non-Functionalized Microcantilevers
title_full_unstemmed A Multiparameter Gas-Monitoring System Combining Functionalized and Non-Functionalized Microcantilevers
title_short A Multiparameter Gas-Monitoring System Combining Functionalized and Non-Functionalized Microcantilevers
title_sort multiparameter gas-monitoring system combining functionalized and non-functionalized microcantilevers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143659/
https://www.ncbi.nlm.nih.gov/pubmed/32164168
http://dx.doi.org/10.3390/mi11030283
work_keys_str_mv AT huberchristof amultiparametergasmonitoringsystemcombiningfunctionalizedandnonfunctionalizedmicrocantilevers
AT pinamariapilar amultiparametergasmonitoringsystemcombiningfunctionalizedandnonfunctionalizedmicrocantilevers
AT moralesjuanjose amultiparametergasmonitoringsystemcombiningfunctionalizedandnonfunctionalizedmicrocantilevers
AT mehdaouialexandre amultiparametergasmonitoringsystemcombiningfunctionalizedandnonfunctionalizedmicrocantilevers
AT huberchristof multiparametergasmonitoringsystemcombiningfunctionalizedandnonfunctionalizedmicrocantilevers
AT pinamariapilar multiparametergasmonitoringsystemcombiningfunctionalizedandnonfunctionalizedmicrocantilevers
AT moralesjuanjose multiparametergasmonitoringsystemcombiningfunctionalizedandnonfunctionalizedmicrocantilevers
AT mehdaouialexandre multiparametergasmonitoringsystemcombiningfunctionalizedandnonfunctionalizedmicrocantilevers