Special Issue "Impedance Spectroscopy and Its Application in Measurement and Sensor Technology"

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Electrical, Electronics and Communications Engineering".

Deadline for manuscript submissions: 10 December 2021.

Special Issue Editors

Prof. Dr. Olfa Kanoun
E-Mail Website
Guest Editor
Chair for Measurement and Sensor Technology, Technische Universität Chemnitz, 09111 Chemnitz, Germany
Interests: wireless sensor systems; energy harvesting; measurement methods; sensors; sensor systems
Special Issues, Collections and Topics in MDPI journals
Prof. Jörg Himmel
E-Mail Website
Guest Editor
Institute for Measurement and Automation, University of applied Sciences Ruhr-West, 45479 Mühlheim, Germany
Interests: nondestructive material testing; eddy current sensors; medical instrumentation; high frequency surgery
Prof. Dr. Abdelhamid Errachid
E-Mail Website
Guest Editor
Institute of Analytical Sciences (ISA) – UMR 5280, University Claude Bernard Lyon 1, Lyon, France
Interests: biosensors; impedance spectroscopy; chemosensors; biolab-on-a-chip; biofunctionalization; micro- and nanobiotechnology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Impedance spectroscopy is a key enabling measurement method for a range of related applications that exploit the measurement of the complex impedance of a material or a material system to characterize it or its change in dependence of time or of a certain measurement quantity within it or its environment.

The method is often used in several sectors of science and technology, ranging from the classical material characterization to the characterization of nanocomposite materials and corrosion. In the characterization of energy storage units, it effectively allows a deep insight into closed storage units without charging or discharging it. One further advantage of the method is its non-invasiveness, which enables its use for in vitro and in vivo bio- and medical applications. At present, several sensor principles make use of impedance spectroscopy to improve measurement accuracy or to acquire more information from a sensor.

This Special Issue aims at putting together recent advancements in fundamentals, understanding, and applying impedance spectroscopy. It aims to outline some future scientific challenges in the field of impedance spectroscopy. Contributions from all fields of impedance spectroscopy, either experimental or theoretical studies, as well as potential technical implementations, are welcome. We welcome contributions in the fields of:

  • Material testing and characterization;
  • Corrosion and coatings;
  • Sensors, biosensors, and electrochemical sensors;
  • Energy storage, batteries, and capacitors;
  • Bio- and medical applications;
  • Food and nutrition.

Prof. Olfa Kanoun
Prof. Jörg Himmel
Prof. Abdelhamid ERRACHID
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. Applied Sciences 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 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

  • impedance spectroscopy
  • electrochemical impedance Spectroscopy
  • impedance tomography
  • dielectric spectroscopy
  • bioimpedance
  • bioimpedance spectroscopy
  • material testing
  • sensors
  • chemical sensors
  • biosensors
  • energy storage
  • food
  • pharmacy

Published Papers (5 papers)

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Research

Article
Portable and Highly Versatile Impedance Meter for Very Low Frequency Measurements
Appl. Sci. 2021, 11(17), 8234; https://doi.org/10.3390/app11178234 - 05 Sep 2021
Cited by 1 | Viewed by 405
Abstract
Electrical Impedance Spectroscopy (EIS) is a characterization technique that is gaining more and more importance in various fields of research and applications. The frequency range of investigation varies according to the type of application. In some fields (biology, medicine, energy) it is useful [...] Read more.
Electrical Impedance Spectroscopy (EIS) is a characterization technique that is gaining more and more importance in various fields of research and applications. The frequency range of investigation varies according to the type of application. In some fields (biology, medicine, energy) it is useful to be able to perform measurements at very low frequency values (down to a few mHz or even below). While impedance meters operating at frequencies in the range from a few tens of Hz up to a few MHz can be regarded as quite standard pieces of instrumentation commonly available in many laboratories, instrumentation for measurements at very low frequencies, although commercially available, is less common. The subject of this work is the design, realization and testing of a low frequency impedance measurement platform that has the advantage of being portable, rather inexpensive, and yet highly versatile. In our approach, we exploit a personal computer and a soundboard as a powerful system for digital signal generation and analysis that, with the help of low complexity and low-cost external hardware and a public domain software for the implementation of the core system, allow to tailor the platform for targeting specific applications with minimal effort. As an example, we will demonstrate the application of the system to the investigation of polypyrrole-based supercapacitor structures. Full article
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Article
Detection of Density Changes in Soils with Impedance Spectroscopy
Appl. Sci. 2021, 11(4), 1568; https://doi.org/10.3390/app11041568 - 09 Feb 2021
Viewed by 741
Abstract
Measurement of soil parameters, such as moisture, density and density change, can provide important information for evaluating the stability of earthwork structures and for structural health monitoring. To ensure the stability of flood protection dikes, erosion at the contact zones of different soil [...] Read more.
Measurement of soil parameters, such as moisture, density and density change, can provide important information for evaluating the stability of earthwork structures and for structural health monitoring. To ensure the stability of flood protection dikes, erosion at the contact zones of different soil zones must be avoided. In this work we propose the use of impedance spectroscopy to measure changes in density and volume caused by contact erosion. Erosion leads generally to a volume decrease in the contact zones between soils with different grain sizes and, consequently, to cavities in the dike structure. For this purpose, a proctor mould was developed for emulating contact erosion and the realisation of impedance measurements. Experimental investigations show a correlation between volume change of the soils in the proctor mould and impedance value. For a volume change of soil in the range of approximately 1.5% to 5.3%, an impedance change arises in the range of 17.2% to 29.8%. With several investigations we proof, that it is possible to detect material transport by impedance spectroscopy. Full article
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Article
Obstetric Anal Sphincter Injury Detection Using Impedance Spectroscopy with the ONIRY Probe
Appl. Sci. 2021, 11(2), 637; https://doi.org/10.3390/app11020637 - 11 Jan 2021
Cited by 2 | Viewed by 785
Abstract
Anal sphincter injuries occurring during natural deliveries are often a reason for severe complications, including fecal incontinence. Currently, approximately 80% of these injuries remain unrecognized. Therefore, it is crucial to focus on finding a way to diagnose such injuries as early as possible [...] Read more.
Anal sphincter injuries occurring during natural deliveries are often a reason for severe complications, including fecal incontinence. Currently, approximately 80% of these injuries remain unrecognized. Therefore, it is crucial to focus on finding a way to diagnose such injuries as early as possible to apply the tailored treatment. This study aimed to assess the accuracy of impedance spectroscopy in the diagnostics of obstetric anal sphincter injuries (OASIs) using a specially designed rectal probe called the ONIRY Probe. The protocol of the clinical trials is described at NCT03769792. Twenty women after natural delivery were enrolled in the study and divided into two groups referring to the stage of a perineal tear (Group A: 1- or 2-degrees, and Group B: 3- or 4-degrees of a perineal tear; without or with sphincter injury, respectively). The study design included three visits during which a number of diagnostic tests were performed, including impedance spectroscopy, and 3-dimensional endoanal ultrasound, anorectal manometry, and physical examination as a reference. Statistical analysis comprised raw data analysis, as well as post-processing with the Synthetic Minority Oversampling Technique (SMOTE) method, as the output reference grade was highly imbalanced. A variety of machine learning techniques were applied for the OASI classification (≤2 vs. >2), and Wexner scale (=0 vs. >0). The best efficacies were obtained using Random Forest and k-Nearest Neighbors methods. Best accuracies were 93.3% and 99.6%, for raw and re-analyzed data, respectively, for ultrasound assessed by the OASI classification; and 79.8% and 97.0%, respectively, for clinical evaluation using the Wexner scale. Impedance spectroscopy performed using the ONIRY Probe appears to be a promising diagnostic technique for anal sphincter injury detection but requires further investigation (the next phase of the pilot clinical trial is described at NCT04181840). Full article
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Article
Experimental Study of Electrical Properties of Pharmaceutical Materials by Electrical Impedance Spectroscopy
Appl. Sci. 2020, 10(18), 6576; https://doi.org/10.3390/app10186576 - 21 Sep 2020
Cited by 2 | Viewed by 1153
Abstract
The physicochemical characterization of pharmaceutical materials is essential for drug discovery, development and evaluation, and for understanding and predicting their interaction with physiological systems. Amongst many measurement techniques for spectroscopic characterization of pharmaceutical materials, Electrical Impedance Spectroscopy (EIS) is powerful as it can [...] Read more.
The physicochemical characterization of pharmaceutical materials is essential for drug discovery, development and evaluation, and for understanding and predicting their interaction with physiological systems. Amongst many measurement techniques for spectroscopic characterization of pharmaceutical materials, Electrical Impedance Spectroscopy (EIS) is powerful as it can be used to model the electrical properties of pure substances and compounds in correlation with specific chemical composition. In particular, the accurate measurement of specific properties of drugs is important for evaluating physiological interaction. The electrochemical modelling of compounds is usually carried out using spectral impedance data over a wide frequency range, to fit a predetermined model of an equivalent electrochemical cell. This paper presents experimental results by EIS analysis of four drug formulations (trimethoprim/sulfamethoxazole C14H18N4O3-C10H11N3O3, ambroxol C13H18Br2N2O.HCl, metamizole sodium C13H16N3NaO4S, and ranitidine C13H22N4O3S.HCl). A wide frequency range from 20 Hz to 30 MHz is used to evaluate system identification techniques using EIS data and to obtain process models. The results suggest that arrays of linear R-C models derived using system identification techniques in the frequency domain can be used to identify different compounds. Full article
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Article
An Impedance Sensor in Detection of Immunoglobulin G with Interdigitated Electrodes on Flexible Substrate
Appl. Sci. 2020, 10(11), 4012; https://doi.org/10.3390/app10114012 - 10 Jun 2020
Cited by 2 | Viewed by 1137
Abstract
Immunoassay plays an important role in the early screening and diagnosis of diseases. The use of electrochemical methods to realize the label-free, specific and rapid detection of antigens has attracted extensive attention from researchers. In this study, we realized the function of immunosensing [...] Read more.
Immunoassay plays an important role in the early screening and diagnosis of diseases. The use of electrochemical methods to realize the label-free, specific and rapid detection of antigens has attracted extensive attention from researchers. In this study, we realized the function of immunosensing and detection by lithography, the interdigitated gold electrode on the polyethylene naphthalate (PEN) membrane. Then, the gold electrode was biofunctionalized and the characterization was verified by atomic force microscopy, which was finally for the detection of mice IgG. This immunosensor has a low detection limit, with a broad linear detection range of 0.01–10 ng/mL. The results show that the electrochemical impedance sensor made of metal electrodes based on PEN flexible materials is suitable for immunoassay experiments. If this method could be proved by further studies, broad application prospects can be seen in routine immunoassays. Full article
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