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Advanced Piezoelectric Materials: Science and Technology
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Advanced Piezoelectric Materials: Science and Technology

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Smart Materials".

Deadline for manuscript submissions: closed (10 May 2022) | Viewed by 9155

Special Issue Editors

Dr. Jie Jiao

E-Mail Website
Guest Editor
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China
Interests: relaxor ferroelectric single crystals and devices
Prof. Dr. Jianwei Chen

E-Mail Website
Guest Editor
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China
Interests: relaxor ferroelectric single crystals and devices

Special Issue Information

Dear Colleagues,

The last two decades have seen an intensive improvement of piezoelectric materials, both in fundamental research and in devices for applications. In terms of basic research, a large number of novel lead-free piezoelectric ceramics with high performances have emerged. High quality and large-size lead-based or lead-free single crystals have been successfully produced. The researches on the microstructure of piezoelectric materials have revealed deeper understanding of physical essence. The researches on the catalysis and energy storage based on piezoelectric materials and flexible piezoelectric devices are in the ascendant. In the application field, piezoelectric ceramics, single crystals and thin films are widely used in a variety of ultrasonic transducers, actuators, sensors, filters, random access memory, field effect transistors and energy harvesters. These devices are applied in aerospace, consumer electronics, medical and other industries.

This Special Issue will compile recent developments in the field of advanced piezoelectric materials. The articles presented in this Special Issue will cover various topics, ranging from but not limited to the electrical, optical and other functional properties of piezoelectric ceramics, single crystals or thin films, tailoring of phase structure, morphology, domain structure or lattice structure, devices oriented piezoelectric composites, piezoelectric catalysis, various of piezoelectric devices, such as ultrasonic transducers, actuators, sensors and energy harvesters.

Dr. Jie Jiao
Prof. Dr. Jianwei Chen
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 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. Materials 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 ceramics
  • piezoelectric single crystals
  • piezoelectric thin films
  • piezoelectric composites
  • piezoelectric devices
  • ultrasonic transducers
  • actuators
  • sensors
  • energy harvesters

Published Papers (4 papers)

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Research

19 pages, 8676 KiB  
Article
Alkali Niobate Powder Synthesis Using an Emerging Microwave-Assisted Hydrothermal Method
by Cristina-Rodica Dumitrescu, Vasile-Adrian Surdu, Hermine Stroescu, Adrian-Ionut Nicoara, Ionela Andreea Neacsu, Roxana Trusca, Ecaterina Andronescu and Lucian Toma Ciocan
Materials 2022, 15(15), 5410; https://doi.org/10.3390/ma15155410 - 06 Aug 2022
Cited by 4 | Viewed by 1536
Abstract
For more than five decades, alkali niobate-based materials (KxNa1−xNbO3) have been one of the most promising lead-free piezoelectric materials researched to be used in electronics, photocatalysis, energy storage/conversion and medical applications, due to their important health [...] Read more.
For more than five decades, alkali niobate-based materials (KxNa1−xNbO3) have been one of the most promising lead-free piezoelectric materials researched to be used in electronics, photocatalysis, energy storage/conversion and medical applications, due to their important health and environmentally friendly nature. In this paper, our strategy was to synthetize the nearest reproductible composition to KxNa1−xNbO3 (KNN) with x = 0.5, placed at the limit of the morphotropic phase boundary (MPB) with the presence of both polymorphic phases, orthorhombic and tetragonal. The wet synthesis route was chosen to make the mix crystal powders, starting with the suspension preparation of Nb2O5 powder and KOH and NaOH alkaline solutions. Hydrothermal microwave-assisted maturation (HTMW), following the parameter variation T = 200–250 °C, p = 47–60 bar and dwelling time of 30–90 min, was performed. All powders therefore synthesized were entirely KxN1−xNbO3 solid solutions with x = 0.06–0.69, and the compositional, elemental, structural and morphological characterization highlighted polycrystalline particle assemblage with cubic and prismatic morphology, with sizes between 0.28 nm and 2.95 μm and polymorphic O-T phase coexistence, and a d33 piezoelectric constant under 1 pC/N of the compacted unsintered and unpoled discs were found. Full article
(This article belongs to the Special Issue Advanced Piezoelectric Materials: Science and Technology)
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11 pages, 4722 KiB  
Article
Power Batteries Health Monitoring: A Magnetic Imaging Method Based on Magnetoelectric Sensors
by Rui Chen, Jie Jiao, Ziyun Chen, Yuhang Wang, Tingyu Deng, Wenning Di, Shunliang Zhu, Mingguang Gong, Li Lu, Xianyu Xie and Haosu Luo
Materials 2022, 15(5), 1980; https://doi.org/10.3390/ma15051980 - 07 Mar 2022
Cited by 6 | Viewed by 2264
Abstract
With the popularity of electric vehicles, the ever-increasing demand for high-capacity batteries highlights the need for monitoring the health status of batteries. In this article, we proposed a magnetic imaging technique (MIT) to investigate the health status of power batteries nondestructively. This technique [...] Read more.
With the popularity of electric vehicles, the ever-increasing demand for high-capacity batteries highlights the need for monitoring the health status of batteries. In this article, we proposed a magnetic imaging technique (MIT) to investigate the health status of power batteries nondestructively. This technique is based on a magnetic sensor array, which consists of a 16-channel high-performance magnetoelectric sensor, and the noise equivalent magnetic induction (NEB) of each channel reaches 3–5 pT/Hz1/2@10 Hz. The distribution of the magnetic field is imaged by scanning the magnetic field variation of different positions on the surface. Therefore, the areas of magnetic anomalies are identified by distinguishing different magnetic field abnormal results. and it may be possible to classify the battery failure, so as to put forward suggestions on the use of the battery. This magnetic imaging method expands the application field of this high-performance magnetoelectric sensor and contributes to the battery’s safety monitoring. Meanwhile, it may also act as an important role in other nondestructive testing fields. Full article
(This article belongs to the Special Issue Advanced Piezoelectric Materials: Science and Technology)
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8 pages, 1963 KiB  
Article
Enhanced Electromechanical Response in PVDF-BNBT Composite Nanofibers for Flexible Sensor Applications
by Chung Ming Leung, Xiaoqiu Chen, Tao Wang, Yanxue Tang, Zhihua Duan, Xiangyong Zhao, Helezi Zhou and Feifei Wang
Materials 2022, 15(5), 1769; https://doi.org/10.3390/ma15051769 - 26 Feb 2022
Cited by 5 | Viewed by 1917
Abstract
Wearable energy harvesters and sensors have recently attracted significant attention with the rapid development of artificial intelligence and the Internet of Things (IoT). Compared to high-output bulk materials, these wearable devices are mainly fabricated by thin-film-based materials that limit their application. Therefore, the [...] Read more.
Wearable energy harvesters and sensors have recently attracted significant attention with the rapid development of artificial intelligence and the Internet of Things (IoT). Compared to high-output bulk materials, these wearable devices are mainly fabricated by thin-film-based materials that limit their application. Therefore, the enhancement of output voltage and power for these devices has recently become an urgent topic. In this paper, the lead-free bismuth titanate-barium titanate (0.93(Na0.5Bi0.5)TiO3-0.07BaTiO3(BNBT)) nanoparticles and nanofibers were embedded into the PVDF nanofibers. They produced high inorganic electrical voltage coefficients, high electromechanical coupling coefficients, and environmentally friendly properties that enhance the electromechanical performance of pure PVDF nanofibers, and they are all the critical requirements for modern flexible pressure sensors. In detail, PVDF and PVDF-based composites nanofibers were prepared by electrospinning, and different flexible sandwich composite devices were fabricated by the PDMS encapsulation method. As a result, the six-time enhancement maximum output voltage was obtained in a PVDF-BNBT (fiber)-based composite sensor compared to the pure PVDF one. Our results indicate that the output voltage of the pressure sensors has been significantly enhanced, and the development gate is enabled by analyzing the related physical process and influence mechanism. Full article
(This article belongs to the Special Issue Advanced Piezoelectric Materials: Science and Technology)
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11 pages, 2944 KiB  
Article
Deposition, Characterization, and Modeling of Scandium-Doped Aluminum Nitride Thin Film for Piezoelectric Devices
by Qiaozhen Zhang, Mingzhu Chen, Huiling Liu, Xiangyong Zhao, Xiaomei Qin, Feifei Wang, Yanxue Tang, Keat Hoe Yeoh, Khian-Hooi Chew and Xiaojuan Sun
Materials 2021, 14(21), 6437; https://doi.org/10.3390/ma14216437 - 27 Oct 2021
Cited by 9 | Viewed by 2840
Abstract
In this work, we systematically studied the deposition, characterization, and crystal structure modeling of ScAlN thin film. Measurements of the piezoelectric device’s relevant material properties, such as crystal structure, crystallographic orientation, and piezoelectric response, were performed to characterize the Sc0.29Al0.71 [...] Read more.
In this work, we systematically studied the deposition, characterization, and crystal structure modeling of ScAlN thin film. Measurements of the piezoelectric device’s relevant material properties, such as crystal structure, crystallographic orientation, and piezoelectric response, were performed to characterize the Sc0.29Al0.71N thin film grown using pulsed DC magnetron sputtering. Crystal structure modeling of the ScAlN thin film is proposed and validated, and the structure–property relations are discussed. The investigation results indicated that the sputtered thin film using seed layer technique had a good crystalline quality and a clear grain boundary. In addition, the effective piezoelectric coefficient d33 was up to 12.6 pC/N, and there was no wurtzite-to-rocksalt phase transition under high pressure. These good features demonstrated that the sputtered ScAlN is promising for application in high-coupling piezoelectric devices with high-pressure stability. Full article
(This article belongs to the Special Issue Advanced Piezoelectric Materials: Science and Technology)
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