sensors-logo

Journal Browser

Journal Browser

Advanced Techniques for Fluctuation-Enhanced Sensing and Gas Sensor Applications

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

Deadline for manuscript submissions: 30 November 2024 | Viewed by 1389

Special Issue Editor

Special Issue Information

Dear Colleagues,

Fluctuation-enhanced sensing (FES) techniques arise from the observation that the microscopic, random fluctuation phenomena in sensors are rich sources of information. Unlike traditional sensing methods, FES acts in a way completely analogous to biological sensing, taking advantage of the fact that the sensed agent changes the statistics of the generated output given that it is the noise (the signal fluctuations) that carries the useful sensory information. The application of FES enables the attainment of sensitivity orders of magnitude higher than those of classical sensing methods, even when compared to standard commercial electronic noses. In order to reach the highest sensitivity, particular attention must be paid to the dedicated instrumentation necessary for the application of the FES technique, and suitable methods for the identification of the agents starting from the measurements must be developed. For this Special Issue, we want to collect contributions that are relevant in the field of FES, focused on sensors, on measurement techniques and instruments, and on algorithms and techniques for the identification of gases and odors.

Dr. Graziella Scandurra
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 sensor
  • fluctuation-enhanced sensing
  • low noise instrumentation
  • noise measurements
  • spectral analysis and spectrum analyzers
  • identification algorithms and techniques

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

19 pages, 2659 KiB  
Article
Flicker Noise in Resistive Gas Sensors—Measurement Setups and Applications for Enhanced Gas Sensing
by Janusz Smulko, Graziella Scandurra, Katarzyna Drozdowska, Andrzej Kwiatkowski, Carmine Ciofi and He Wen
Sensors 2024, 24(2), 405; https://doi.org/10.3390/s24020405 - 9 Jan 2024
Viewed by 1154
Abstract
We discuss the implementation challenges of gas sensing systems based on low-frequency noise measurements on chemoresistive sensors. Resistance fluctuations in various gas sensing materials, in a frequency range typically up to a few kHz, can enhance gas sensing by considering its intensity and [...] Read more.
We discuss the implementation challenges of gas sensing systems based on low-frequency noise measurements on chemoresistive sensors. Resistance fluctuations in various gas sensing materials, in a frequency range typically up to a few kHz, can enhance gas sensing by considering its intensity and the slope of power spectral density. The issues of low-frequency noise measurements in resistive gas sensors, specifically in two-dimensional materials exhibiting gas-sensing properties, are considered. We present measurement setups and noise-processing methods for gas detection. The chemoresistive sensors show various DC resistances requiring different flicker noise measurement approaches. Separate noise measurement setups are used for resistances up to a few hundred kΩ and for resistances with much higher values. Noise measurements in highly resistive materials (e.g., MoS2, WS2, and ZrS3) are prone to external interferences but can be modulated using temperature or light irradiation for enhanced sensing. Therefore, such materials are of considerable interest for gas sensing. Full article
Show Figures

Figure 1

Back to TopTop