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Special Issue "Electrochemical Sensors and Platforms: Design and Application"

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

Deadline for manuscript submissions: 30 September 2021.

Special Issue Editors

Dr. Martina Medvidović-Kosanović
E-Mail Website
Guest Editor
Department of Chemistry, University of Osijek, Cara Hadrijana 8A, 31000 Osijek, Croatia
Interests: electrochemistry; voltammetry; eis; antioxidants; Schiff bases; metal complexes; modified electrodes
Dr. Anamarija Stanković
E-Mail Website
Guest Editor
Department of Chemistry, University of Osijek, Cara Hadrijana 8A, 31000 Osijek, Croatia
Interests: precipitation; pathological biomineralization; biomineralization; voltametric techniques; investigation of biologically active compounds
Dr. Ivana Novak Jovanović
E-Mail Website
Guest Editor
Institute for Medical Research and Occupational Health, Ksaverska cesta 2, p.p. 291, 10001 Zagreb, Croatia
Interests: electrochemistry; voltammetry; redox mechanisms; bioactive compounds
Dr. Géza Nagy
E-Mail Website
Guest Editor
Institute of Chemistry, Faculty of Sciences, University of Pécs, Ifjúság útja 6, 7624 Pécs, Hungary
Interests: scanning electrochemical microscopy; amperometry; chemical sensors; biosensors

Special Issue Information

Dear Colleagues,

At present, electrochemical sensors are widely used in routine analytical measurements as well as in different areas of scientific research. Thanks to the long-lasting devotion and work of a large number of pioneering research groups, certain electrochemical sensors excel in terms of a short response time, high selectivity, sensitivity, lower limit of detection, etc. The flexibility of sensors’ structure and size allow their application in solving reaction mechanisms, in studying the fine details of biological processes or corrosion steps, etc. This has obviously led to a growing amount of interest in the field of electrochemical sensor development. Applications of new mechanisms and materials (such as ceramics, conductive polymers, carbon nanomaterials, semiconductors, metals, etc.) are being tested to improve selective analyte recognition, as well as for signal formation or transmission. New manufacturing methods have been developed or tested for the fabrication of advanced sensors with improved measuring properties. 

This Special Issue entitled “Electrochemical Sensors and Platforms: Design and Application” aims to highlight the current state-of-the-art in the field of sensor design as well as the application of sensors in various analytical tasks (such as environmental monitoring, food analysis, medical applications, and other fields). We invite you to contribute to this Special Issue. Review articles, short communications, and full-size research papers are all welcome.

Dr. Martina Medvidović-Kosanović
Dr. Anamarija Stanković
Dr. Ivana Novak Jovanović
Dr. Géza Nagy
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 papers will be 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 2200 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
  • Sensor design
  • Sensor characterization techniques
  • Intelligent processing of sensor materials
  • Chemical change monitoring
  • Electroanalytical techniques

Published Papers (2 papers)

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Research

Open AccessArticle
High-Sensitivity Dual Electrochemical QCM for Reliable Three-Electrode Measurements
Sensors 2021, 21(8), 2592; https://doi.org/10.3390/s21082592 - 07 Apr 2021
Viewed by 299
Abstract
An electrochemical quartz crystal microbalance (EC-QCM) is a versatile gravimetric technique that allows for parallel characterization of mass deposition and electrochemical properties. Despite its broad applicability, simultaneous characterization of two electrodes remains challenging due to practical difficulties posed by the dampening from fixture [...] Read more.
An electrochemical quartz crystal microbalance (EC-QCM) is a versatile gravimetric technique that allows for parallel characterization of mass deposition and electrochemical properties. Despite its broad applicability, simultaneous characterization of two electrodes remains challenging due to practical difficulties posed by the dampening from fixture parasitics and the dissipative medium. In this study, we present a dual electrochemical QCM (dual EC-QCM) that is employed in a three-electrode configuration to enable consequent monitoring of mass deposition and viscous loading on two crystals, the working electrode (WE) and the counter electrode (CE). A novel correction approach, along with a three standard complex impedance calibration, is employed to overcome the effect of dampening while keeping high spectral sensitivity. Separation of viscous loading and rigid mass deposition is achieved by robust characterization of the complex impedance at the resonance frequency. Validation of the presented system is done by cyclic voltammetry characterization of Ag underpotential deposition on gold. The results indicate mass deposition of 412.2 ng for the WE and 345.6 ng for the CE, reflecting a difference of the initially-present Ag adhered to the surface. We also performed higher harmonic measurements that further corroborate the sensitivity and reproducibility of the dual EC-QCM. The demonstrated approach is especially intriguing for electrochemical energy storage applications where mass detection with multiple electrodes is desired. Full article
(This article belongs to the Special Issue Electrochemical Sensors and Platforms: Design and Application)
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Open AccessArticle
Use of Amperometric and Potentiometric Probes in Scanning Electrochemical Microscopy for the Spatially-Resolved Monitoring of Severe Localized Corrosion Sites on Aluminum Alloy 2098-T351
Sensors 2021, 21(4), 1132; https://doi.org/10.3390/s21041132 - 06 Feb 2021
Cited by 1 | Viewed by 388
Abstract
Amperometric and potentiometric probes were employed for the detection and characterization of reactive sites on the 2098-T351 Al-alloy (AA2098-T351) using scanning electrochemical microscopy (SECM). Firstly, the probe of concept was performed on a model Mg-Al galvanic pair system using SECM in the amperometric [...] Read more.
Amperometric and potentiometric probes were employed for the detection and characterization of reactive sites on the 2098-T351 Al-alloy (AA2098-T351) using scanning electrochemical microscopy (SECM). Firstly, the probe of concept was performed on a model Mg-Al galvanic pair system using SECM in the amperometric and potentiometric operation modes, in order to address the responsiveness of the probes for the characterization of this galvanic pair system. Next, these sensing probes were employed to characterize the 2098-T351 alloy surface immersed in a saline aqueous solution at ambient temperature. The distribution of reactive sites and the local pH changes associated with severe localized corrosion (SLC) on the alloy surface were imaged and subsequently studied. Higher hydrogen evolution, lower oxygen depletion and acidification occurred at the SLC sites developed on the 2098-T351 Al-alloy. Full article
(This article belongs to the Special Issue Electrochemical Sensors and Platforms: Design and Application)
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