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Chemosensors
Special Issues
Advances in Electrochemical Sensors: Emerging Materials, Techniques, and Applications
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Advances in Electrochemical Sensors: Emerging Materials, Techniques, and Applications

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Electrochemical Devices and Sensors".

Deadline for manuscript submissions: 31 August 2026 | Viewed by 3558

Special Issue Editor

Prof. Dr. Anielle Christine Almeida Silva
*
E-Mail Website
Guest Editor
Laboratory of Strategic Materials, Physics Institute, Federal University of Uberlândia, Uberlândia 38400-902, Minas Gerais, Brazil
Interests: electrochemical sensing; nanomaterials; biosensors; green synthesis; environmental and biomedical applications
* aniellechristineas@gmail.com
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrochemical sensors have emerged as powerful analytical tools for fast, selective and cost-effective detection of diverse chemical and biological analytes. Advances in nanomaterials, electrode modification and signal processing have greatly enhanced their sensitivity, stability and applicability in real-world samples. This Special Issue, “Advances in Electrochemical Sensors: Emerging Materials, Techniques, and Applications”, aims to highlight the latest developments and interdisciplinary approaches driving progress in this dynamic field.

We welcome original research articles, communications and comprehensive reviews addressing novel electrode materials, nanostructured and hybrid interfaces, innovative transduction mechanisms and biofunctionalization strategies. Contributions exploring miniaturized, portable or wearable sensing systems, as well as applications in environmental monitoring, biomedical diagnostics, food safety and agricultural analysis, are particularly encouraged.

By gathering these contributions, this Special Issue seeks to provide a broad overview of state-of-the-art electrochemical sensing technologies and foster discussion on their translation into practical, sustainable solutions for scientific and societal challenges. 

Prof. Dr. Anielle Christine Almeida Silva
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 250 words) can be sent to the Editorial Office for assessment.

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

  • electrochemical sensors
  • nanomaterials
  • surface modification
  • biosensing
  • signal amplification
  • portable and wearable devices
  • environmental monitoring
  • biomedical diagnostics
  • sustainable materials
  • real sample analysis

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

Published Papers (2 papers)

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18 pages, 2661 KB  
Article
Impedance Sensor Based on ZnO/Graphite Composite with 3D-Printed Housing for Ionized Ammonia Detection in Continuous Water Flow
by Jorge A. Uc-Martín and Roberto G. Ramírez-Chavarría
Chemosensors 2026, 14(3), 64; https://doi.org/10.3390/chemosensors14030064 - 6 Mar 2026
Cited by 1 | Viewed by 1698
Abstract
High concentrations of ionized ammonia (NH4+) have been increasingly reported in municipal drinking water systems, posing a severe public health risk as excessive ingestion can lead to life-threatening conditions. Despite its importance, there is a significant lack of sensing [...] Read more.
High concentrations of ionized ammonia (NH4+) have been increasingly reported in municipal drinking water systems, posing a severe public health risk as excessive ingestion can lead to life-threatening conditions. Despite its importance, there is a significant lack of sensing technologies designed for continuous-flow monitoring outside laboratory settings, particularly those providing a robust, low-cost methodology suitable for resource-limited environments. To address these challenges, in this work, we report the development of an impedance sensor featuring a 3D-printed housing (3D-IS) for monitoring aqueous ionized ammonia (NH4+). The sensing electrodes, composed of zinc oxide and graphite, allow for the detection of concentrations 10 times lower and 60 times higher than current environmental limits. Its innovative, optimized design, analogous to that of industrial pressure gauges, highlights its potential for use in continuous water flow conditions outside the laboratory, such as water treatment plants. The level of NH4+ in water is monitored by changes in impedance magnitude, with optimal performance observed at a frequency of 100 kHz. At this frequency, the impedance magnitude decreased by nearly two orders of magnitude as the NH4+ concentration increased from 0 to 1 μM. Under these optimized conditions, the sensor exhibited a sensitivity of 2 kΩ/log(μM) and a linearity exceeding 90%. Furthermore, we propose an equivalent circuit model that accurately describes the experimental data, explaining the transduction process. We also describe, from an electrical perspective, the phenomenon of adsorption on the sensor’s transducer surface, thereby ensuring the device’s selectivity. The sensor was evaluated using dilutions of a standard ammonium solution for IC in distilled water, as well as with real groundwater samples, obtaining ∼99.7% of correlation with ion chromatography and a limit of detection of 2 μM. Finally, our device can provide information relatively quickly, with the added advantage of stable response under continuous-flow and real conditions, making it an attractive option for integration into a field sensor node. Full article
(This article belongs to the Special Issue Advances in Electrochemical Sensors: Emerging Materials, Techniques, and Applications)
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Review

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24 pages, 7790 KB  
Review
Flexible Pressure Sensors from a Multidisciplinary Perspective: Principles, Material Selection and Application Expansion
by Lichao Liu, Huihui Zhu, Xuefeng Gu, Ping Hu, Yang Chen, Pengjia Qi and Kai Liu
Chemosensors 2026, 14(3), 71; https://doi.org/10.3390/chemosensors14030071 - 17 Mar 2026
Viewed by 1604
Abstract
As wearable electronic products have been integrated into daily life, flexible pressure sensors, which convert pressure into electrical signals, have become a research focus because of their cross-industry application potential. Despite an increasing number of related studies, the systematic integration of discussions on [...] Read more.
As wearable electronic products have been integrated into daily life, flexible pressure sensors, which convert pressure into electrical signals, have become a research focus because of their cross-industry application potential. Despite an increasing number of related studies, the systematic integration of discussions on sensing mechanisms, performance regulation, and multiscenario adaptability remains to be explored. In this paper, core sensing mechanisms such as piezoresistive, capacitive, piezoelectric, and triboelectric mechanisms are systematically reviewed; key performance indicators, including sensitivity, response time, and linearity, are analyzed; construction strategies for diverse substrates and conductive functional materials are explored; and applications in healthcare, human–computer interaction, and electronic skin are elaborated on. The aim of these analyses is to provide practical insights into the development and design of flexible pressure sensors, thus providing a useful reference for advancing these technologies and expanding their cross-domain use. Full article
(This article belongs to the Special Issue Advances in Electrochemical Sensors: Emerging Materials, Techniques, and Applications)
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