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Microelectromechanical Transducer to Monitor High-Doses of Nuclear Irradiation

This paper reports the design, fabrication and measured performance of a passive microelectromechanical transducer for the wireless monitoring of high irradiation doses in nuclear environments. The sensing device is composed of a polymer material (high-density polyethylene) sealed inside a cavity. S...

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Autores principales: Philippe, Julien, Ferry, Muriel, Charlot, Samuel, Assié, Sandrine, Lecestre, Aurélie, Libaude, Guillaume, Ferrand, André, Pons, Patrick, Aubert, Hervé
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8433841/
https://www.ncbi.nlm.nih.gov/pubmed/34502802
http://dx.doi.org/10.3390/s21175912
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author Philippe, Julien
Ferry, Muriel
Charlot, Samuel
Assié, Sandrine
Lecestre, Aurélie
Libaude, Guillaume
Ferrand, André
Pons, Patrick
Aubert, Hervé
author_facet Philippe, Julien
Ferry, Muriel
Charlot, Samuel
Assié, Sandrine
Lecestre, Aurélie
Libaude, Guillaume
Ferrand, André
Pons, Patrick
Aubert, Hervé
author_sort Philippe, Julien
collection PubMed
description This paper reports the design, fabrication and measured performance of a passive microelectromechanical transducer for the wireless monitoring of high irradiation doses in nuclear environments. The sensing device is composed of a polymer material (high-density polyethylene) sealed inside a cavity. Subjected to ionizing radiation, this material releases various gases, which increases the pressure inside the cavity and deflects a dielectric membrane. From the measurement of the deflection, the variation of the applied pressure can be estimated, and, in turn, the dose may be determined. The microelectromechanical structure can also be used to study and validate the radiolysis properties of the polymer through its gas emission yield factor. Measurement of the dielectric membrane deflection is performed here to validate on the one hand the required airtightness of the cavity exposed to doses about 4 MGy and on the other hand, the functionality of the fabricated dosimeter for doses up to 80 kGy. The selection of appropriate materials for the microelectromechanical device is discussed, and the outgassing properties of the selected high-density polyethylene are analysed. Moreover, the technological fabrication process of the transducer is detailed.
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spelling pubmed-84338412021-09-12 Microelectromechanical Transducer to Monitor High-Doses of Nuclear Irradiation Philippe, Julien Ferry, Muriel Charlot, Samuel Assié, Sandrine Lecestre, Aurélie Libaude, Guillaume Ferrand, André Pons, Patrick Aubert, Hervé Sensors (Basel) Article This paper reports the design, fabrication and measured performance of a passive microelectromechanical transducer for the wireless monitoring of high irradiation doses in nuclear environments. The sensing device is composed of a polymer material (high-density polyethylene) sealed inside a cavity. Subjected to ionizing radiation, this material releases various gases, which increases the pressure inside the cavity and deflects a dielectric membrane. From the measurement of the deflection, the variation of the applied pressure can be estimated, and, in turn, the dose may be determined. The microelectromechanical structure can also be used to study and validate the radiolysis properties of the polymer through its gas emission yield factor. Measurement of the dielectric membrane deflection is performed here to validate on the one hand the required airtightness of the cavity exposed to doses about 4 MGy and on the other hand, the functionality of the fabricated dosimeter for doses up to 80 kGy. The selection of appropriate materials for the microelectromechanical device is discussed, and the outgassing properties of the selected high-density polyethylene are analysed. Moreover, the technological fabrication process of the transducer is detailed. MDPI 2021-09-02 /pmc/articles/PMC8433841/ /pubmed/34502802 http://dx.doi.org/10.3390/s21175912 Text en © 2021 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
Philippe, Julien
Ferry, Muriel
Charlot, Samuel
Assié, Sandrine
Lecestre, Aurélie
Libaude, Guillaume
Ferrand, André
Pons, Patrick
Aubert, Hervé
Microelectromechanical Transducer to Monitor High-Doses of Nuclear Irradiation
title Microelectromechanical Transducer to Monitor High-Doses of Nuclear Irradiation
title_full Microelectromechanical Transducer to Monitor High-Doses of Nuclear Irradiation
title_fullStr Microelectromechanical Transducer to Monitor High-Doses of Nuclear Irradiation
title_full_unstemmed Microelectromechanical Transducer to Monitor High-Doses of Nuclear Irradiation
title_short Microelectromechanical Transducer to Monitor High-Doses of Nuclear Irradiation
title_sort microelectromechanical transducer to monitor high-doses of nuclear irradiation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8433841/
https://www.ncbi.nlm.nih.gov/pubmed/34502802
http://dx.doi.org/10.3390/s21175912
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