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Special Issue "Biological, Liquid and Gas Sensors Based on Piezoelectric Resonators"

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

Deadline for manuscript submissions: 18 May 2021.

Special Issue Editors

Dr. Boris D. Zaitsev

Guest Editor
Kotelnikov Institute of Radio Engineering and Electronics of RAS, Saratov Branch, 410019 Saratov, Russia
Interests: acoustic waves in piezoelectric materals and structures; acoustic sensors
Dr. Irina A. Borodina

Guest Editor
Kotelnikov Institute of Radio Engineering and Electronics of RAS, Saratov Branch, 410019 Saratov, Russia
Interests: acoustic waves in piezoelectric materals and structures, acoustic sensors

Special Issue Information

Dear Colleagues,

Resonators based on bulk acoustic waves with a longitudinal or lateral exciting electric field and one- or two-port resonators on surface or plate acoustic waves will be considered. A gas-sensitive element uses a layer deposited on the surface of a piezoelectric resonator of any type, the mechanical or electrical properties of which change in the presence of the analyzed gas. Liquid sensors are developed by using the contact of the analyzed liquid with a resonator such as those considered, the main parameters of which change when the mechanical or electrical properties of the contacting liquid change. As for biological sensors, two variants are contemplated. In the first variant, an active layer containing immobilized antibodies, bacteria or a virus is applied to the surface of the resonator. When a specific reagent is added to this layer, its properties change, which allows the detection and identification of the bacteria or virus. In the second variant, the biological reaction occurs directly in a liquid suspension containing the studied microorganisms to which a specific or non-specific reagent is added. Changing the physical properties of the suspension will allow one to detect and identify microorganisms contained in the suspension.

This Special Issue aims to receive submissions of both review and original research articles related to biological, liquid and gas sensors including various types of piezoelectric resonators based on bulk, surface and plate acoustic waves. Such sensors are widely used to diagnose various diseases at an early stage, to monitor the environment and to control various liquids in the food and chemical industries. These sensors include:

  • biological sensors for detection and identification of microorganisms, operating with active layers containing immobilized antibodies or bacteria or without them directly in liquid phase;
  • liquid sensors for measuring the mechanical and electrical properties of the liquid in contact with the resonator;
  • gas sensors for detection of the analyzed gas, including a gas-sensitive layer in contact with the resonator.

Dr. Boris D. Zaitsev
Dr. Irina A. Borodina
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

  • piezoelectric resonators with longitudinal or lateral exciting electric field;
  • resonators on plate or surface acoustic wave;
  • layer with immobilized microorganism;
  • bacteria- or virus-specific reagent;
  • suspension of bacteria or virus;
  • viscous and conducting liquid;
  • liquid identification;
  • gas-sensitive layer;
  • gas identification.

Published Papers (3 papers)

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Research

Open AccessArticle
The Radial Electric Field Excited Circular Disk Piezoceramic Acoustic Resonator and Its Properties
Sensors 2021, 21(2), 608; https://doi.org/10.3390/s21020608 - 17 Jan 2021
Abstract
A new type of piezoceramic acoustic resonator in the form of a circular disk with a radial exciting electric field is presented. The advantage of this type of resonator is the localization of the electrodes at one end of the disk, which leaves [...] Read more.
A new type of piezoceramic acoustic resonator in the form of a circular disk with a radial exciting electric field is presented. The advantage of this type of resonator is the localization of the electrodes at one end of the disk, which leaves the second end free for the contact of the piezoelectric material with the surrounding medium. This makes it possible to use such a resonator as a sensor base for analyzing the properties of this medium. The problem of exciting such a resonator by an electric field of a given frequency is solved using a two-dimensional finite element method. The method for solving the inverse problem for determining the characteristics of a piezomaterial from the broadband frequency dependence of the electrical impedance of a single resonator is proposed. The acoustic and electric field inside the resonator is calculated, and it is shown that this location of electrodes makes it possible to excite radial, flexural, and thickness extensional modes of disk oscillations. The dependences of the frequencies of parallel and series resonances, the quality factor, and the electromechanical coupling coefficient on the size of the electrodes and the gap between them are calculated. Full article
(This article belongs to the Special Issue Biological, Liquid and Gas Sensors Based on Piezoelectric Resonators)
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Open AccessArticle
Modeling the Piezoelectric Cantilever Resonator with Different Width Layers
Sensors 2021, 21(1), 87; https://doi.org/10.3390/s21010087 - 25 Dec 2020
Abstract
The piezoelectric cantilever resonator is used widely in many fields because of its perfect design, easy-to-control process, easy integration with the integrated circuit. The tip displacement and resonance frequency are two important characters of the piezoelectric cantilever resonator and many models are used [...] Read more.
The piezoelectric cantilever resonator is used widely in many fields because of its perfect design, easy-to-control process, easy integration with the integrated circuit. The tip displacement and resonance frequency are two important characters of the piezoelectric cantilever resonator and many models are used to characterize them. However, these models are only suitable for the piezoelectric cantilever with the same width layers. To accurately characterize the piezoelectric cantilever resonators with different width layers, a novel model is proposed for predicting the tip displacement and resonance frequency. The results show that the model is in good agreement with the finite element method (FEM) simulation and experiment measurements, the tip displacement error is no more than 6%, the errors of the first, second, and third-order resonance frequency between theoretical values and measured results are 1.63%, 1.18%, and 0.51%, respectively. Finally, a discussion of the tip displacement of the piezoelectric cantilever resonator when the second layer is null, electrode, or silicon oxide (SiO2) is presented, and the utility of the model as a design tool for specifying the tip displacement and resonance frequency is demonstrated. Furthermore, this model can also be extended to characterize the piezoelectric cantilever with n-layer film or piezoelectric doubly clamped beam. Full article
(This article belongs to the Special Issue Biological, Liquid and Gas Sensors Based on Piezoelectric Resonators)
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Open AccessArticle
A Frequency-Correcting Method for a Vortex Flow Sensor Signal Based on a Central Tendency
Sensors 2020, 20(18), 5379; https://doi.org/10.3390/s20185379 - 20 Sep 2020
Abstract
A vortex flow meter employs a sensor based on the piezoelectric vibration principle to realize vortex signal acquisition, and therefore the measurement results are susceptible to vibration noise. In this paper, the generalized mode method is proposed based on the central tendency characteristic [...] Read more.
A vortex flow meter employs a sensor based on the piezoelectric vibration principle to realize vortex signal acquisition, and therefore the measurement results are susceptible to vibration noise. In this paper, the generalized mode method is proposed based on the central tendency characteristic of the vortex signal and combined with the existing filter bank method. The method combining filter bank with the generalized mode is designed and applied in the signal-processing system of the vortex flow meter, which makes up for the defect that the filter bank method cannot filter out the noise in the sub-band. The simulation experiments verify the feasibility and anti-interference performance of the algorithm. Meanwhile, a comparison with two FFT (Fast Fourier Transform) spectrum analysis methods shows that the algorithm designed in this paper requires a smaller sample size and achieves better real-time performance. The actual anti-vibration experiment and calibration experiment verify that the signal-processing system of a vortex flow meter ensures good accuracy and repeatability. Full article
(This article belongs to the Special Issue Biological, Liquid and Gas Sensors Based on Piezoelectric Resonators)
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