Special Issue "Challenges in Gas Detection and Sensing"

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "C:Chemistry".

Deadline for manuscript submissions: 31 January 2024 | Viewed by 96

Special Issue Editor

Dr. Maddaka Reddeppa
E-Mail Website
Guest Editor
Division of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48105, USA
Interests: gas sensor; µLED; III-mitrides; optoelectronics

Special Issue Information

Dear Colleagues,

Gas detection technology has already become an indispensable technology for various aspects in fields such as safety systems, environmental monitoring applications, disease diagnosis, and industrial process controls. However, conventional gas sensors operate at elevated temperatures, which leads to high power consumption. Gas sensing depends on chemical adsorption and the reaction of desired gas molecules on semiconductor surfaces requiring activation energy. Hence, the room temperature gas sensor shows poor performance. However, gas sensor low temperatures provide reliable and safe sensing in explosive and flammable environments. Huge efforts have been devoted to enhancing room temperature gas sensor performance. For example, light irradiations have replaced the thermal energy required to promote surface reactions of the sensor without increasing the substrate temperature.

Sensor malfunctioning is one of the major challenges in gas sensing technology, and selectivity is one of the key parameters in gas sensor technology. Selectivity is the capability of the sensor device to identify the desired gas among the gas mixtures. It can be measured by the ratio of the sensor signal induced by the target gas to the interface gases. However, conventional resistive gas sensors generally exhibit non-discriminative responses toward a range of interfering gases, such as carbon monoxide, ethanol benzene, toluene, and xylene. If a particular sensor aims to detect formaldehyde, typically resistive gas sensors show a higher response to ethanol than formaldehyde. Moreover, ethanol is omnipresent, and its concentration is higher than formaldehyde indoors, which can cause formaldehyde malfunction. Thus, special attention needs to be paid to the selective detection of the desired gas. Accordingly, this Special Issue seeks to showcase research papers, communications, and review articles that focus on overcoming challenges such as sensor malfunctioning, susceptibility to pollution, and contaminations on the sensor surfaces in gas sensing technology.

We look forward to receiving your submissions.

Dr. Maddaka Reddeppa
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. Micromachines 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 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.


  • gas sensor
  • sensing device
  • room temperature
  • selectivity
  • light irradiation
  • malfunctioning

Published Papers

This special issue is now open for submission.
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