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New Trend for Gas Sensor Development: From Sensing Materials to Metrological Evaluation

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

Deadline for manuscript submissions: closed (15 January 2025) | Viewed by 2770

Special Issue Editors

Dr. Mariangela Catena Latino

E-Mail Website
Guest Editor
CNR-IPCF, Institute for Chemical-Physical Processes, Viale F. Stagno D'Alcontres, 37, 98158 Messina, Italy
Interests: morphological–structural characterization and analysis of the sensing properties of nanostructured materials
Special Issues, Collections and Topics in MDPI journals
Dr. Giovanni Gugliandolo

E-Mail Website
Guest Editor
Department of Engineering, University of Messina, 98166 Messina, Italy
Interests: the development and metrological characterization of sensors for environmental monitoring
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is with great pleasure that we invite you to contribute to our Special Issue entitled "New Trend for Gas Sensor Development: From Sensing Materials to Metrological Evaluation" for Sensors, MDPI.

Gas sensors are an integral part of everyday life and are crucial for monitoring indoor and outdoor air quality. The constant emissions from industry, households and vehicles have a profound effect on our living environment, making the monitoring of these pollutants essential for the well-being of all organisms on Earth. Furthermore, the continuous development of gas sensing technology has extended its application to areas of medical diagnostics and monitoring.

In this context, there is an urgent need for research and development focused on gas sensors based on innovative materials with improved metrological performance. Sensitivity, selectivity, a fast response and fast recovery times are among the parameters that are critical for various applications spanning from environmental monitoring to human health.

Our Special Issue seeks both research and review papers that contribute to the meteorological characterization of chemical–physical innovative materials for the design and fabrication of sensors and sensor-based measurement systems.

We are particularly interested in papers detailing the structural characterization and analysis of sensing properties in advanced and novel materials, such as nanostructured ones. We also welcome new theoretical and experimental insights into gas sensing mechanisms, as well as innovative transduction mechanisms operating across a wide frequency range, from DC to microwave frequencies.

Dr. Mariangela Catena Latino
Dr. Giovanni Gugliandolo
Guest Editors

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

  • VOCs
  • Nox
  • nanomaterials
  • health monitoring
  • material characterization
  • nanoparticles
  • environmental monitoring
  • safety
  • gas sensing

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Published Papers (2 papers)

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Research

14 pages, 4786 KiB  
Article
Room Temperature NO2-Sensing Properties of N-Doped ZnO Nanoparticles Activated by UV-Vis Light
by Angelo Ferlazzo, Giovanni Neri, Andrea Donato, Giovanni Gugliandolo and Mariangela Latino
Sensors 2025, 25(1), 114; https://doi.org/10.3390/s25010114 - 27 Dec 2024
Viewed by 761
Abstract
Zinc oxide nanoparticles (ZnO NPs) with varying levels of nitrogen (N) doping were synthesized using a straightforward sol–gel approach. The morphology and microstructure of the N-doped ZnO NPs were examined through techniques such as SEM, XRD, photoluminescence, and Raman spectroscopy. The characterization revealed [...] Read more.
Zinc oxide nanoparticles (ZnO NPs) with varying levels of nitrogen (N) doping were synthesized using a straightforward sol–gel approach. The morphology and microstructure of the N-doped ZnO NPs were examined through techniques such as SEM, XRD, photoluminescence, and Raman spectroscopy. The characterization revealed visible changes in the morphology and microstructure resulting from the incorporation of nitrogen into the ZnO lattice. These N-doped ZnO NPs were used in the fabrication of conductometric gas sensors designed to operate at room temperature (RT) for detecting low concentrations of NO2 in the air, under LED UV-Vis irradiation (λ = 400 nm). The influence of nitrogen doping on sensor performance was systematically studied. The findings indicate that N-doping effectively enhances ZnO-based sensors’ ability to detect NO2 at RT, achieving a notable response (S = R/R0) of approximately 18 when exposed to 5 ppm of NO2. These improvements in gas-sensing capabilities are attributed to the reduction in particle size and the narrowing of the optical band gap. Full article
(This article belongs to the Special Issue New Trend for Gas Sensor Development: From Sensing Materials to Metrological Evaluation)
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15 pages, 3386 KiB  
Article
Open-Path Cavity Ring-Down Spectroscopy for Simultaneous Detection of Hydrogen Chloride and Particles in Cleanroom Environment
by Muhammad Bilal Khan, Christian L’Orange, Cheongha Lim, Deokhyeon Kwon and Azer P. Yalin
Sensors 2024, 24(17), 5611; https://doi.org/10.3390/s24175611 - 29 Aug 2024
Viewed by 1347
Abstract
The present study addresses advanced monitoring techniques for particles and airborne molecular contaminants (AMCs) in cleanroom environments, which are crucial for ensuring the integrity of semiconductor manufacturing processes. We focus on quantifying particle levels and a representative AMC, hydrogen chloride (HCl), having known [...] Read more.
The present study addresses advanced monitoring techniques for particles and airborne molecular contaminants (AMCs) in cleanroom environments, which are crucial for ensuring the integrity of semiconductor manufacturing processes. We focus on quantifying particle levels and a representative AMC, hydrogen chloride (HCl), having known detrimental effects on equipment longevity, product yield, and human health. We have developed a compact laser sensor based on open-path cavity ring-down spectroscopy (CRDS) using a 1742 nm near-infrared diode laser source. The sensor enables the high-sensitivity detection of HCl through absorption by the 2-0 vibrational band with an Allan deviation of 0.15 parts per billion (ppb) over 15 min. For quantifying particle number concentrations, we examine various detection methods based on statistical analyses of Mie scattering-induced ring-down time fluctuations. We find that the ring-down distributions’ 3rd and 4th standard moments allow particle detection at densities as low as ~105 m−3 (diameter > 1 μm). These findings provide a basis for the future development of compact cleanroom monitoring instrumentation for wafer-level monitoring for both AMC and particles, including mobile platforms. Full article
(This article belongs to the Special Issue New Trend for Gas Sensor Development: From Sensing Materials to Metrological Evaluation)
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