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Electronics
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Electronic Nose: From Fundamental Research to Applications
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Electronic Nose: From Fundamental Research to Applications

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Microelectronics".

Deadline for manuscript submissions: 15 July 2025 | Viewed by 4262

Special Issue Editors

Prof. Dr. Fengdong Qu

E-Mail Website
Guest Editor
School of Microelectronics, Northwestern Polytechnical University, Xi’an 710071, China
Interests: gas sensors; metal nitrides; MEMS; electronic nose; healthcare sensor
Dr. Dong Yao

E-Mail Website
Guest Editor
College of Chemistry, Jilin University, Changchun 130012, China
Interests: quantum-dot material, quantum-dot light-emitting diode, oxide semiconductor, gas sensing

Special Issue Information

Dear Colleagues,

Electronic nose devices have received considerable attention in the field of sensor technology during the past twenty years, largely due to the discovery of numerous applications derived from research on diverse fields of applied sciences. This Special Issue aims to collect recent research on electronic nose devices and their applications in agricultural, biomedical, cosmetics, environmental, food, manufacturing, military, pharmaceutical, regulatory, and various other scientific research fields, in addition to highlighting the future development of this rapidly expanding research area.

We are looking for submissions of original studies that highlight gas-sensing materials and electronic nose devices. Reviews that cover well-summarized prospects are also encouraged. The topics include, but are not limited to, the following:

  1. Electronic noses;
  2. Optoelectronic noses;
  3. Gas sensors;
  4. Signal processing.

Prof. Dr. Fengdong Qu
Dr. Dong Yao
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. Electronics 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 2400 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

  • artificial olfactory
  • gas sensor array
  • e-nose
  • artificial neural networks

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

12 pages, 3349 KiB  
Communication
Accelerated Life Tests for Time-Dependent Response Characterization of Functionalized Piezoelectric Microcantilever-Based Gas Sensors
by Lawrence Nsubuga and Roana de Oliveira Hansen
Electronics 2024, 13(22), 4525; https://doi.org/10.3390/electronics13224525 - 18 Nov 2024
Viewed by 814
Abstract
This article explores the accelerated lifetime test approach to characterize the time-dependent response of a piezoelectrically driven microcantilever (PD-MC) based gas sensor. The novelty here relies on demonstrating how accelerated lifetime tests can be useful to differentiate sensing mechanisms for non-linear gas sensors. [...] Read more.
This article explores the accelerated lifetime test approach to characterize the time-dependent response of a piezoelectrically driven microcantilever (PD-MC) based gas sensor. The novelty here relies on demonstrating how accelerated lifetime tests can be useful to differentiate sensing mechanisms for non-linear gas sensors. The results show the determination of the sensor’s optimum operation time while maintaining result validity. The approach is demonstrated for 1,5-diaminopentane (cadaverine), a volatile organic compound (VOC) whose concentration in meat and fish products has been proven viable for determining the shelf life. A PD-MC functionalized with a cadaverine-specific binder was therefore incorporated into a hand-held electronic nose, and the response was found to be highly reliable within a specific resonance frequency shift, enabling the accurate prediction of meat and fish expiration dates. To identify the limits of detection in terms of cadaverine concentration and sensor lifetime, this study applies the results of accelerated life tests into a Weibull distribution analysis to extract the expected time to failure. For the accelerated life tests, a functionalized PD-MC was exposed to high concentrations of cadaverine, i.e., 252.3 mg/kg, 335.82 mg/kg, and 421.08 mg/kg, compared to the nominal concentration of 33 mg/kg observed in meat and fish samples. Furthermore, we demonstrate the differentiation of the response mechanisms of the system accruing from the concentration-dependent interaction of cadaverine with the binder. This enables the determination of the upper limit of the analyte concentration for a stable response. The findings suggest that the functionalized PD-MC sensor exhibits a linear and predictable response when exposed to a standard cadaverine concentration of 33 mg/kg for up to 93.01 min. Full article
(This article belongs to the Special Issue Electronic Nose: From Fundamental Research to Applications)
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21 pages, 3482 KiB  
Article
Geosmin and 2-Methylisoborneol Detection in Water Using Semiconductor Gas Sensors
by Andrzej Szczurek, Monika Maciejewska, Małgorzata Kabsch-Korbutowicz, Małgorzata Wolska and Anna Solipiwko-Pieścik
Electronics 2024, 13(1), 63; https://doi.org/10.3390/electronics13010063 - 22 Dec 2023
Cited by 2 | Viewed by 2551
Abstract
Geosmin and 2-methylisoborneol (MIB) are the most common causes of unpleasant odours in drinking water. A method was proposed to detect and recognise these compounds in water and determine their concentrations. The method utilises commercial solid-state gas sensors and data analysis. Sample preparation [...] Read more.
Geosmin and 2-methylisoborneol (MIB) are the most common causes of unpleasant odours in drinking water. A method was proposed to detect and recognise these compounds in water and determine their concentrations. The method utilises commercial solid-state gas sensors and data analysis. Sample preparation plays an important role. The aqueous solution is converted into a gas sample using a specially designed dynamic headspace. The responses of the sensors are recorded during exposure to headspace vapours in a dynamic mode. The best limit of detection for geosmin, LOD = 6.20 µg/L, was attained with a TGS2602 sensor. The best limit of detection for MIB, LOD = 0.52 µg/L, was attained with a TGS826 sensor. Geosmin and MIB recognition was 100% successful based on TGS826 and TGS2602 response classifications. Geosmin and MIB concentrations were effectively determined in solutions containing one or both compounds. The respective mathematical models utilised the responses of TGS826 and TGS2602. The smallest concentration prediction error was RMSE = 2.19 µg/L (for geosmin) and RMSE = 0.33 µg/L (for MIB). The study demonstrated the application potential of non-specific gas sensors for the early warning monitoring of geosmin and MIB presence in water. Further studies are needed to develop a system that can be tested in field conditions. Full article
(This article belongs to the Special Issue Electronic Nose: From Fundamental Research to Applications)
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