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Sensors Based on Piezoelectric Materials
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Sensors Based on Piezoelectric Materials

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

Deadline for manuscript submissions: closed (30 May 2020) | Viewed by 15734

Special Issue Editor

Dr. Haim Abramovich

E-Mail Website
Guest Editor
Aerospace Structures Laboratory, Faculty of Aerospace Engineering, Technion-Israel Institute of Technology, 32000 Haifa, Israel
Interests: smart structures technologies; structural mechanics and energy harvesting using piezoelectric and pyroelectric materials; static and dynamic stability of thin walled structures; laminated composite structures; dynamic buckling of thin walled structures
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Piezoelectric materials are considered to be smart or intelligent materials, capable of transforming mechanical energy into electrical energy, usually called the direct piezoelectric effect, and also to convert electrical energy into mechanical energy, called the converse piezoelectric effect. Their unique properties led to the development of various transducers in the form of actuators and sensors. The present Special Issue is dedicated to sensors made of piezoelectric materials, and it aims to highlight innovative piezoelectric sensors. Manuscripts addressing a wide range of piezoelectric sensors are sought, including (but not limited to) recent developments in the following domains: sensors for medical diagnostics, flaw detection using piezoelectric sensors, sensors for non-destructive structural health monitoring, MEMS sensors, flexible and wearable sensors, lead-free sensors, sensors for control systems, monitoring vibration using piezoelectric sensors, new innovative smart sensors, etc. Both review articles and original research papers relating to piezoelectric sensors are welcomed.

Dr. Haim Abramovich
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

  • piezoelectric sensor
  • MEMS sensor
  • flexible sensor
  • wearable sensor
  • lead-free sensor
  • NDT sensors
  • control sensor

Published Papers (2 papers)

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Research

13 pages, 4739 KiB  
Article
Highly Sensitive Impact Sensor Based on PVDF-TrFE/Nano-ZnO Composite Thin Film
by Jing Han, Dong Li, Chunmao Zhao, Xiaoyan Wang, Jie Li and Xinzhe Wu
Sensors 2019, 19(4), 830; https://0-doi-org.brum.beds.ac.uk/10.3390/s19040830 - 18 Feb 2019
Cited by 47 | Viewed by 7702
Abstract
A thin film of polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) has good flexibility and simple preparation process. More importantly, compared with PVDF, its piezoelectric β-phase can be easily formed without mechanical stretching. However, its piezoelectricity is relatively lower. Therefore, at present, PVDF-TrFE is always compounded with [...] Read more.
A thin film of polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) has good flexibility and simple preparation process. More importantly, compared with PVDF, its piezoelectric β-phase can be easily formed without mechanical stretching. However, its piezoelectricity is relatively lower. Therefore, at present, PVDF-TrFE is always compounded with other kinds of piezoelectric materials to solve this problem. The effect of nano-ZnO doping amount on the sensing characteristics of the piezoelectric films was studied. PVDF-TrFE/nano-ZnO films with different nano-ZnO contents were prepared by spin coating process and packaged. The dispersion of nano-ZnO dopants and the crystallinity of β-phase in piezoelectric films with different nano-ZnO contents were observed by scanning electron microscopy and X-ray diffraction, and the piezoelectric strain constants and dielectric constants were measured, respectively. The effect of different nano-ZnO contents on the output performance of the piezoelectric sensor was obtained by a series of impact experiments. The results show that the piezoelectric strain constant and dielectric constant can be increased by doping nano-ZnO in PVDF-TrFE. Moreover, the doping amount of nano-ZnO in PVDF-TrFE is of great significance for improving the piezoelectric properties of PVDF-TrFE/nano-ZnO thin films. Among the prepared piezoelectric films, the output voltage of PVDF-TrFE/nano-ZnO piezoelectric sensor with 7.5% nano-ZnO doping amount is about 5.5 times that of pure PVDF-TrFE. Thus, the optimal range of the doping amount for nano-ZnO is about 4–10%. Full article
(This article belongs to the Special Issue Sensors Based on Piezoelectric Materials)
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13 pages, 2932 KiB  
Communication
Low-Frequency Vibration Sensor with a Sub-nm Sensitivity Using a Bidomain Lithium Niobate Crystal
by Ilya V. Kubasov, Aleksandr M. Kislyuk, Andrei V. Turutin, Alexander S. Bykov, Dmitry A. Kiselev, Aleksandr A. Temirov, Roman N. Zhukov, Nikolai A. Sobolev, Mikhail D. Malinkovich and Yuriy N. Parkhomenko
Sensors 2019, 19(3), 614; https://0-doi-org.brum.beds.ac.uk/10.3390/s19030614 - 01 Feb 2019
Cited by 25 | Viewed by 7284
Abstract
We present a low-frequency sensor for the detection of vibrations, with a sub-nm amplitude, based on a cantilever made of a single-crystalline lithium niobate (LiNbO3) plate, with a bidomain ferroelectric structure. The sensitivity of the sensor-to-sinusoidal vibrational excitations was measured in [...] Read more.
We present a low-frequency sensor for the detection of vibrations, with a sub-nm amplitude, based on a cantilever made of a single-crystalline lithium niobate (LiNbO3) plate, with a bidomain ferroelectric structure. The sensitivity of the sensor-to-sinusoidal vibrational excitations was measured in terms of displacement as well as of acceleration amplitude. We show a linear behavior of the response, with the vibrational displacement amplitude in the entire studied frequency range up to 150 Hz. The sensitivity of the developed sensor varies from minimum values of 20 μV/nm and 7 V/g (where g = 9.81 m/s2 is the gravitational acceleration), at a frequency of 23 Hz, to peak values of 92.5 mV/nm and 2443 V/g, at the mechanical resonance of the cantilever at 97.25 Hz. The smallest detectable vibration depended on the excitation frequency and varied from 100 nm, at 7 Hz, to 0.1 nm, at frequencies above 38 Hz. Sensors using bidomain lithium niobate single crystals, as sensitive elements, are promising for the detection of ultra-weak low-frequency vibrations in a wide temperature range and in harsh environments. Full article
(This article belongs to the Special Issue Sensors Based on Piezoelectric Materials)
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