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Journals
Chemosensors
Special Issues
Innovative Gas Sensors: Development and Application
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Innovative Gas Sensors: Development and Application

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Applied Chemical Sensors".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 360

Special Issue Editor

Prof. Dr. Bin Ai

E-Mail Website
Guest Editor
School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, China
Interests: intelligent nanosensor system; plasmonic sensors; gas sensors; nanofabrication; artificial intelligence
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Gas sensors play a crucial role in various fields, including environmental monitoring, industrial safety, healthcare, and smart technologies. Recent advancements in materials science, nanotechnology, and sensor fabrication techniques have led to the development of highly sensitive, selective, and reliable gas sensors. This Special Issue will showcase innovative research in gas sensing, covering novel materials, fabrication processes, sensing mechanisms, and real-world applications. We welcome contributions that address challenges in enhancing sensor performance, improving stability, and integrating sensors into practical systems.

This Special Issue aligns perfectly with the scope of Chemosensors, which focuses on the design, development, and application of chemical sensors. Gas sensors are a key category of chemical sensors, and advancements in this field contribute significantly to the advancement of the broader scientific community. The topics covered in this Special Issue, including novel sensing materials, fabrication methods, and application-driven innovations, fall within the journal’s scope in chemical sensing technologies. Additionally, the integration of gas sensors with emerging technologies such as IoT and AI for smart sensing solutions further expands the interdisciplinary nature of Chemosensors.

Prof. Dr. Bin Ai
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. Chemosensors is an international peer-reviewed open access monthly 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 2000 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
  • nanomaterials for sensing
  • portable and wearable sensors
  • internet of things (IoT) sensors
  • electronic nose
  • artificial intelligence in gas sensing

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Published Papers (1 paper)

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Research

19 pages, 2963 KiB  
Article
Theoretical Design of Composite Stratified Nanohole Arrays for High-Figure-of-Merit Plasmonic Hydrogen Sensors
by Jiyu Feng, Yuting Liu, Xinyi Chen, Mingyu Cheng and Bin Ai
Chemosensors 2025, 13(8), 309; https://doi.org/10.3390/chemosensors13080309 - 15 Aug 2025
Viewed by 223
Abstract
Fast, spark-free detection of hydrogen leaks is indispensable for large-scale hydrogen deployment, yet electronic sensors remain power-intensive and prone to cross-talk. Optical schemes based on surface plasmons enable remote read-out, but single-metal devices offer either weak H2 affinity or poor plasmonic quality. Here [...] Read more.
Fast, spark-free detection of hydrogen leaks is indispensable for large-scale hydrogen deployment, yet electronic sensors remain power-intensive and prone to cross-talk. Optical schemes based on surface plasmons enable remote read-out, but single-metal devices offer either weak H2 affinity or poor plasmonic quality. Here we employ full-wave finite-difference time-domain (FDTD) simulations to map the hydrogen response of nanohole arrays (NAs) that can be mass-produced by colloidal lithography. Square lattices of 200 nm holes etched into 100 nm films of Pd, Mg, Ti, V, or Zr expose an intrinsic trade-off: Pd maintains sharp extraordinary optical transmission modes but shifts by only 28 nm upon hydriding, whereas Mg undergoes a large dielectric transition that extinguishes its resonance. Vertical pairing of a hydride-forming layer with a noble metal plasmonic cap overcomes this limitation. A Mg/Pd bilayer preserves all modes and red-shifts by 94 nm, while the predicted optimum Ag (60 nm)/Mg (40 nm) stack delivers a 163 nm shift with an 83 nm linewidth, yielding a figure of merit of 1.96—surpassing the best plasmonic hydrogen sensors reported to date. Continuous-film geometry suppresses mechanical degradation, and the design rules—noble-metal plasmon generator, buried hydride layer, and thickness tuning—are general. This study charts a scalable route to remote, sub-ppm, optical hydrogen sensors compatible with a carbon-neutral energy infrastructure. Full article
(This article belongs to the Special Issue Innovative Gas Sensors: Development and Application)
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