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Low Power Gas Sensors and Its Applications

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".

Deadline for manuscript submissions: 30 April 2024 | Viewed by 1779

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Guest Editor
Departament de Ciència de Materials i Química Física, Universitat de Barcelona, c/Martí i Franquès 1, E-08028 Barcelona, Spain
Interests: gas sensor applications and energy storage systems; gas sensors;photoelectrochemical
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Special Issue Information

Dear Colleagues,

With the advent of the Industry 4.0, IoT, and Smart City concepts, the need for cheaper, smaller, smarter, and, above all, less power-hungry gas sensor devices is a reality that requires and demands paramount effort from the research and engineering community. Among the requisites, the most constraining and challenging is the need for less power-hungry sensors, meaning, from nearly-zero to microwatt power devices. The miniaturization of devices has been the pre-eminent approach despite it having been proved insufficient in most cases. Therefore, other approaches have also been explored: light-driven sensors, room temperature sensors, passive sensors, colorimetric sensors, NFC tags, etc.

This Special Issue of Sensors will focus on recent developments in low power gas sensor technologies. Original papers describing completed and unpublished work that are not currently under review by any other journal or magazine are solicited. Both reviews and articles are welcome.

Prof. Dr. Cristian Fabrega Gallego
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Gas sensors
  • Gas sensors application
  • Optical gas sensors
  • Gas detection
  • Colorimetric gas sensors
  • Environmental gas sensors
  • Safety food gas sensors

Published Papers (1 paper)

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Research

15 pages, 4976 KiB  
Article
A Threshold Helium Leakage Detection Switch with Ultra Low Power Operation
by Sulaiman Mohaidat and Fadi Alsaleem
Sensors 2023, 23(8), 4019; https://0-doi-org.brum.beds.ac.uk/10.3390/s23084019 - 15 Apr 2023
Viewed by 1318
Abstract
Detecting helium leakage is important in many applications, such as in dry cask nuclear waste storage systems. This work develops a helium detection system based on the relative permittivity (dielectric constant) difference between air and helium. This difference changes the status of an [...] Read more.
Detecting helium leakage is important in many applications, such as in dry cask nuclear waste storage systems. This work develops a helium detection system based on the relative permittivity (dielectric constant) difference between air and helium. This difference changes the status of an electrostatic microelectromechanical system (MEMS) switch. The switch is a capacitive-based device and requires a very negligible amount of power. Exciting the switch’s electrical resonance enhances the MEMS switch sensitivity to detect low helium concentration. This work simulates two different MEMS switch configurations: a cantilever-based MEMS modeled as a single-degree-freedom model and a clamped-clamped beam MEMS molded using the COMSOL Multiphysics finite-element software. While both configurations demonstrate the switch’s simple operation concept, the clamped-clamped beam was selected for detailed parametric characterization due to its comprehensive modeling approach. The beam detects at least 5% helium concentration levels when excited at 3.8 MHz, near electrical resonance. The switch performance decreases at lower excitation frequencies or increases the circuit resistance. The MEMS sensor detection level was relatively immune to beam thickness and parasitic capacitance changes. However, higher parasitic capacitance increases the switch’s susceptibility to errors, fluctuations, and uncertainties. Full article
(This article belongs to the Special Issue Low Power Gas Sensors and Its Applications)
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