Journal articles: 'Piezoelectric'

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Umer, Usama, Mustufa Haider Abidi, Syed Hammad Mian, Fahad Alasim, and Mohammed K. Aboudaif. "Effects of Silica Nanoparticles on the Piezoelectro-Elastic Response of PZT-7A–Polyimide Nanocomposites: Micromechanics Modeling Technique." Polymers 16, no. 20 (October 10, 2024): 2860. http://dx.doi.org/10.3390/polym16202860.

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By using piezoelectric materials, it is possible to convert clean and renewable energy sources into electrical energy. In this paper, the effect on the piezoelectro-elastic response of piezoelectric-fiber-reinforced nanocomposites by adding silica nanoparticles into the polyimide matrix is investigated by a micromechanical method. First, the Ji and Mori–Tanaka models are used to calculate the properties of the nanoscale silica-filled polymer. The nanoparticle agglomeration and silica–polymer interphase are considered in the micromechanical modeling. Then, considering the filled polymer as the matrix and the piezoelectric fiber as the reinforcement, the Mori–Tanaka model is used to estimate the elastic and piezoelectric constants of the piezoelectric fibrous nanocomposites. It was found that adding silica nanoparticles into the polymer improves the elastic and piezoelectric properties of the piezoelectric fibrous nanocomposites. When the fiber volume fraction is 60%, the nanocomposite with the 3% silica-filled polyimide exhibits 39%, 31.8%, and 37% improvements in the transverse Young’s modulus ET, transverse shear modulus GTL, and piezoelectric coefficient e31 in comparison with the composite without nanoparticles. Furthermore, the piezoelectro-elastic properties such as ET, GTL, and e31 can be improved as the nanoparticle diameter decreases. However, the elastic and piezoelectric constants of the piezoelectric fibrous nanocomposites decrease once the nanoparticles are agglomerated in the polymer matrix. A thick interphase with a high stiffness enhances the nanocomposite’s piezoelectro-elastic performance. Also, the influence of volume fractions of the silica nanoparticles and piezoelectric fibers on the nanocomposite properties is studied.

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WAN, YONGPING, and LIANGLIANG FAN. "MODELING THE PIEZOELECTRIC d33 COEFFICIENT OF THE CELLULAR PIEZOELECTRET FILM BY FINITE ELEMENT METHOD." Modern Physics Letters B 25, no. 31 (November 21, 2011): 2343–51. http://dx.doi.org/10.1142/s0217984911027558.

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The piezoelectric d33 coefficient of voided charged polypropylene film is much pronounced, which can be as large as that of PZT ceramics. The piezoelectric effect originates from the electric field of distributed charges that is coupled with elastic deformation of the host matrix. For modeling the piezoelectric effect of cellular piezoelectret, we present a finite element model for the electrostatic analysis and the solution of elastic deformation. Qualitative analysis of piezoelectric d33 coefficient is given with respect to various parameters including material constants, void geometry and charge density. Quantitative comparison shows that this finite element model can simulate the inflation experiments of cellular piezoelectret very well. This finite element model is believed to be conducive to the optimization design of cellular piezoelectret, where the analysis is generally encountered for the piezoelectret with complex microstructures.

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Zhang, He Bin, Zhong Hua Zhang, Ya Ding Jin, Hui Lun Jiang, Lin Jun Fan, and Xue Cai Yu. "Experimental Study on Tertiary Piezoelectric Effect of X-Cut Quartz Crystal." Key Engineering Materials 620 (August 2014): 134–39. http://dx.doi.org/10.4028/www.scientific.net/kem.620.134.

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This Paper has analyzed the relationship between the generation of multiple piezoelectric effects and boundary conditions of piezoelectrics and the experiments have studied tertiary piezoelectric effect of piezoelectric quartz which is applied extensively in engineering practice. We processed our experiment by piezoelectric quartz crystal unit made by two pieces of X-cut piezoelectric quartz, parallel connected it to a capacitor with the equivalent capacitance of about 1,000 times of that of piezoelectric quartz crystal unit and then got the result of pure primary piezoelectric effect excluding tertiary induced effect; then compared it with conventional primary piezoelectric effect and concluded that tertiary piezoelectric effect of piezoelectric quartz is about 1.7% of primary piezoelectric effect; thus quantified longitudinally tertiary piezoelectric effect of piezoelectric quartz crystal, concluded that piezoelectric coefficient of tertiary effect of X-cut piezoelectric quartz is about 0.04 pC/N by experiment and got relative uncertainty and standard uncertainty of the results by such experiment methods respectively as 9.49×10-3and 1.37×10-2. This study on tertiary piezoelectric effect has provided a new approach for improving precision and sensitivity of piezoelectric sensors.

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Zhang, Zhong Hua, Guang Ming Cheng, Jun Wu Kan, Ping Zeng, and Jian Ming Wen. "The Influence of Multiple Piezoelectric Effects on Elastic Coefficient of Piezoelectric Ceramics." Advanced Materials Research 305 (July 2011): 348–52. http://dx.doi.org/10.4028/www.scientific.net/amr.305.348.

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The development of new materials and the performance improvement of existing materials become an important subject from different aspects. In this paper, based on the theoretical research results of multiple piezoelectric effects, the influence of multiple piezoelectric effects on elastic coefficient of piezoelectric ceramics is studied. Theoretical analysis indicates that it is multiple piezoelectric effects that make piezoelectrics have two kinds of elastic and they result in the decrease of elastic compliance coefficients. Experimental validation is performed through PZT-5. Experimental results show that elastic compliance coefficient grows decreased by 0.912 times.

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Zengtao Yang and Jiashi Yang. "Connected Vibrating Piezoelectric Bimorph Beams as a Wide-band Piezoelectric Power Harvester." Journal of Intelligent Material Systems and Structures 20, no. 5 (November 28, 2008): 569–74. http://dx.doi.org/10.1177/1045389x08100042.

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We analyze coupled flexural vibration of two elastically and electrically connected piezoelectric beams near resonance for converting mechanical vibration energy to electrical energy. Each beam is a so-called piezoelectric bimorph with two layers of piezoelectrics. The 1D equations for bending of piezoelectric beams are used for a theoretical analysis. An exact analytical solution to the beam equations is obtained. Numerical results based on the solution show that the two resonances of individual beams can be tuned as close as desired by design when they are connected to yield a wide-band electrical output. Therefore, the structure can be used as a wide-band piezoelectric power harvester.

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Vazquez, Irma Rocio, Zeynel Guler, and Nathan Jackson. "Enhancing Manufacturability of SU-8 Piezoelectric Composite Films for Microsystem Applications." Micromachines 15, no. 3 (March 14, 2024): 397. http://dx.doi.org/10.3390/mi15030397.

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Piezoelectric thin films are extensively used as sensing or actuating layers in various micro-electromechanical systems (MEMS) applications. However, most piezoelectrics are stiff ceramics, and current polymer piezoelectrics are not compatible with microfabrication due to their low Curie Temperature. Recent polymer-composite piezoelectrics have gained interest but can be difficult to pattern. Photodefinable piezoelectric films could resolve these challenges by reducing the manufacturability steps by eliminating the etching process. But they typically have poor resolution and thickness properties. This study explores methods of enhancing the manufacturability of piezoelectric composite films by optimizing the process parameters and synthesis of SU-8 piezo-composite materials. Piezoelectric ceramic powders (barium titanate (BTO) and lead zirconate titanate (PZT)) were integrated into SU-8, a negative epoxy-based photoresist, to produce high-resolution composites in a non-cleanroom environment. I-line (365 nm) light was used to enhance resolution compared to broadband lithography. Two variations of SU-8 were prepared by thinning down SU-8 3050 and SU-8 3005. Different weight percentages of the piezoelectric powders were investigated: 5, 10, 15 and 20 wt.% along with varied photolithography processing parameters. The composites’ transmittance properties were characterized using UV-Vis spectroscopy and the films’ crystallinity was determined using X-ray diffraction (XRD). The 0–3 SU-8/piezo composites demonstrated resolutions < 2 μm while maintaining bulk piezoelectric coefficients d33 > 5 pm V−1. The films were developed with thicknesses >10 μm. Stacked layers were achieved and demonstrated significantly higher d33 properties.

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Park, D. S., M. Hadad, L. M. Riemer, R. Ignatans, D. Spirito, V. Esposito, V. Tileli, et al. "Induced giant piezoelectricity in centrosymmetric oxides." Science 375, no. 6581 (February 11, 2022): 653–57. http://dx.doi.org/10.1126/science.abm7497.

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Piezoelectrics are materials that linearly deform in response to an applied electric field. As a fundamental prerequisite, piezoelectric materials must have a noncentrosymmetric crystal structure. For more than a century, this has remained a major obstacle for finding piezoelectric materials. We circumvented this limitation by breaking the crystallographic symmetry and inducing large and sustainable piezoelectric effects in centrosymmetric materials by the electric field–induced rearrangement of oxygen vacancies. Our results show the generation of extraordinarily large piezoelectric responses [with piezoelectric strain coefficients ( d 33 ) of ~200,000 picometers per volt at millihertz frequencies] in cubic fluorite gadolinium-doped CeO 2− x films, which are two orders of magnitude larger than the responses observed in the presently best-known lead-based piezoelectric relaxor–ferroelectric oxide at kilohertz frequencies. These findings provide opportunities to design piezoelectric materials from environmentally friendly centrosymmetric ones.

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CHEN, YU, YUMEI WEN, and PING LI. "CHARACTERIZATIONS OF DISSIPATION FACTORS IN PIEZOELECTRIC CERAMIC DISCS UNDER STRESS AND TEMPERATURE." International Journal of Information Acquisition 01, no. 04 (December 2004): 327–35. http://dx.doi.org/10.1142/s0219878904000306.

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Losses in piezoelectrics are considered in general consisting of three different parts: Dielectric, elastic and piezoelectric losses. A method to analyze losses in piezoelectrics uses three dissipation factors to represent the corresponding losses by introducing complex coefficients into Mason's equivalent electric circuit. We establish a model of a piezoelectric ceramic disc utilizing the method mentioned above, and then the relationships between the complex coefficients and the equivalent circuit parameters are obtained. Derived from the piezoelectric equations with complex coefficients, the dissipation factors are related to the equivalent circuit parameters. The experiments give the effects of the temperature and the stress applied on the piezoelectric ceramic disc separately. It is shown that three dissipation factors exhibit different responses to the stress and temperature. Based on the theory of lattice phase and the theory that losses are considered to consist of four portions: Domain wall motion; fundamental lattice portion; microstructure portion and conductivity portion, the phenomenology of losses variations with the temperature and stress is explained.

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Uchino, Kenji. "Piezoelectric Devices in the Sustainable Society." Sustainability in Environment 4, no. 4 (September 11, 2019): p181. http://dx.doi.org/10.22158/se.v4n4p181.

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Our 21st century faces to a “sustainable society”, which enhances (a) usage of non-toxic materials, (b) disposal technology for existing hazardous materials, (c) reduction of contamination gas, (d) environmental monitoring system, (e) new energy source creation, and (f) energy-efficient device development in the piezoelectric area. With reducing their size, the electromagnetic components reduce their efficiency drastically. Thus, piezoelectric transducers with much less losses are highly sought recently. Piezoelectric devices seem to be all-around contributors and a key component to the above mentioned five R&D areas. Some of the efforts include: (a) Since the most popular piezoelectric lead zirconate titante ceramics will be regulated in European and Asian societies due to their toxicity (Pb2+ ion), lead-free piezoelectrics have been developed. (b) Since hazardous organic substances can easily be dissolved by the ultrasonic irradiation in water, a new safe disposal technology using piezoelectric transducers has been developed. (c) We demonstrated an energy recovery system on a hybrid car from its engine’s mechanical vibration to the rechargeable battery. (d) Micro ultrasonic motors based on piezoelectrics demonstrated 1/20 reduction in the volume and a 20-time increase in efficiency of the conventional electromagnetic motors. This paper introduces leading piezoelectric materials, devices, and drive/control methods, relating with the above “sustainability” technologies, aiming at further research expansion in this area.

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Wang, Hui, Xiaolin Wang, Matthew Wadsworth, Mohammad Faisal Ahmed, Zhe Liu, and Changchun Zeng. "Design, Fabrication, Structure Optimization and Pressure Sensing Demonstration of COC Piezoelectret Sensor and Sensor Array." Micromachines 13, no. 8 (July 26, 2022): 1177. http://dx.doi.org/10.3390/mi13081177.

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This study reported on the design and fabrication of a pseudo-piezoelectric material (piezoelectret) from cyclic olefin copolymer (COC) based on a micropillar structure. The fabrication feasibility of such structure was explored and piezoelectret with the good piezoelectric activity (characterized by quasi-static piezoelectric coefficient d33) was demonstrated. Response surface method with a central composite design was employed to investigate the effects of the structure parameter on the piezoelectric coefficient d33. An optimal structure design was obtained and was validated by experiments. With the optimal design, d33 can reach an exceptional high value of ~9000 pC/N under low pressure. The charging process and the electrical and electromechanical characteristics were further investigated by experimentation and modeling. We further demonstrated the scalability of the fabrication process and demonstrated the application of these sensors in position specific pressure sensing (pressure mapping).

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DAMJANOVIC, DRAGAN, NAAMA KLEIN, JIN LI, and VIKTOR POROKHONSKYY. "WHAT CAN BE EXPECTED FROM LEAD-FREE PIEZOELECTRIC MATERIALS?" Functional Materials Letters 03, no. 01 (March 2010): 5–13. http://dx.doi.org/10.1142/s1793604710000919.

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The reasons for the lower piezoelectric properties in the most studied lead-free piezoelectrics, modified (K, Na)NbO 3 and ( Bi 0.5 Na 0.5) TiO 3, are discussed. Contributions from domain wall motion and properties at the morphotropic phase boundary are considered and are compared to those in PZT. Lead-free, non-piezoelectric solutions to electromechanical coupling are discussed.

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Ali, Fawad, and Muammer Koc. "3D Printed Polymer Piezoelectric Materials: Transforming Healthcare through Biomedical Applications." Polymers 15, no. 23 (November 21, 2023): 4470. http://dx.doi.org/10.3390/polym15234470.

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Three-dimensional (3D) printing is a promising manufacturing platform in biomedical engineering. It offers significant advantages in fabricating complex and customized biomedical products with accuracy, efficiency, cost-effectiveness, and reproducibility. The rapidly growing field of three-dimensional printing (3DP), which emphasizes customization as its key advantage, is actively searching for functional materials. Among these materials, piezoelectric materials are highly desired due to their linear electromechanical and thermoelectric properties. Polymer piezoelectrics and their composites are in high demand as biomaterials due to their controllable and reproducible piezoelectric properties. Three-dimensional printable piezoelectric materials have opened new possibilities for integration into biomedical fields such as sensors for healthcare monitoring, controlled drug delivery systems, tissue engineering, microfluidic, and artificial muscle actuators. Overall, this review paper provides insights into the fundamentals of polymer piezoelectric materials, the application of polymer piezoelectric materials in biomedical fields, and highlights the challenges and opportunities in realizing their full potential for functional applications. By addressing these challenges, integrating 3DP and piezoelectric materials can lead to the development of advanced sensors and devices with enhanced performance and customization capabilities for biomedical applications.

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Das, Ritopa, Duong Le, Ho-Man Kan, Thinh T. Le, Jinyoung Park, Thanh D. Nguyen, and Kevin W. H. Lo. "Osteo-inductive effect of piezoelectric stimulation from the poly(l-lactic acid) scaffolds." PLOS ONE 19, no. 2 (February 27, 2024): e0299579. http://dx.doi.org/10.1371/journal.pone.0299579.

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Piezoelectric biomaterials can generate piezoelectrical charges in response to mechanical activation. These generated charges can directly stimulate bone regeneration by triggering signaling pathway that is important for regulating osteogenesis of cells seeded on the materials. On the other hand, mechanical forces applied to the biomaterials play an important role in bone regeneration through the process called mechanotransduction. While mechanical force and electrical charges are both important contributing factors to bone tissue regeneration, they operate through different underlying mechanisms. The utilizations of piezoelectric biomaterials have been explored to serve as self-charged scaffolds which can promote stem cell differentiation and the formation of functional bone tissues. However, it is still not clear how mechanical activation and electrical charge act together on such a scaffold and which factors play more important role in the piezoelectric stimulation to induce osteogenesis. In our study, we found Poly(l-lactic acid) (PLLA)-based piezoelectric scaffolds with higher piezoelectric charges had a more pronounced osteoinductive effect than those with lower charges. This provided a new mechanistic insight that the observed osteoinductive effect of the piezoelectric PLLA scaffolds is likely due to the piezoelectric stimulation they provide, rather than mechanical stimulation alone. Our findings provide a crucial guide for the optimization of piezoelectric material design and usage.

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Liu, Qing, Yichi Zhang, Jing Gao, Zhen Zhou, Hui Wang, Ke Wang, Xiaowen Zhang, Longtu Li, and Jing-Feng Li. "High-performance lead-free piezoelectrics with local structural heterogeneity." Energy & Environmental Science 11, no. 12 (2018): 3531–39. http://dx.doi.org/10.1039/c8ee02758g.

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Mohammadi, S., and M. Abdalbeigi. "Analytical Optimization of Piezoelectric Circular Diaphragm Generator." Advances in Materials Science and Engineering 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/620231.

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This paper presents an analytical study of the piezoelectric circular diaphragm microgenerator using strain energy method. Piezoelectrics are the intelligent materials that can be used as transducer to convert mechanical energy into electrical energy and vice versa. The aim of this paper is to optimize produced electrical energy from mechanical pressure. Therefore, the circular metal plate equipped with piezoelectric circular patch has been considered with simply and clamped supports. A comprehensive modeling, parametrical study and the effect of the boundary conditions on the performance of the microgenerator have been investigated. The system is under variable pressure from an oscillating pressure source. Results are presented for PZT and PMN-PT piezoelectric materials with steel and aluminum substrates. An optimal value for the radius and thickness of the piezoelectric layer with a special support condition has been obtained.

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Huangfu, Geng, Kun Zeng, Binquan Wang, Jie Wang, Zhengqian Fu, Fangfang Xu, Shujun Zhang, Haosu Luo, Dwight Viehland, and Yiping Guo. "Giant electric field–induced strain in lead-free piezoceramics." Science 378, no. 6624 (December 9, 2022): 1125–30. http://dx.doi.org/10.1126/science.ade2964.

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Piezoelectric actuators are indispensable over a wide range of industries for their fast response and precise displacement. Most commercial piezoelectric actuators contain lead, posing environmental challenges. We show that a giant strain (1.05%) and a large-signal piezoelectric strain coefficient (2100 picometer/volt) are achieved in strontium (Sr)–doped (K,Na)NbO 3 lead-free piezoceramics, being synthesized by the conventional solid-state reaction method without any post treatment. The underlying mechanism responsible for the ultrahigh electrostrain is the interaction between defect dipoles and domain switching. The fatigue resistance, thermal stability, and strain value (0.25%) at 20 kilovolt/centimeter are comparable with or better than those of commercial Pb(Zr,Ti)O 3 -based ceramics, showing great potential for practical applications. This material may provide a lead-free alternative with a simple composition for piezoelectric actuators and a paradigm for the design of high-performance piezoelectrics.

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Dahl-Hansen, Runar Plünnecke, Marit Synnøve Sæverud Stange, Tor Olav Sunde, Johan Henrik Ræder, and Per Martin Rørvik. "On the Evolution of Stress and Microstructure in Radio Frequency-Sputtered Lead-Free (Ba,Ca)(Zr,Ti)O3 Thin Films." Actuators 13, no. 3 (March 20, 2024): 115. http://dx.doi.org/10.3390/act13030115.

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Thin-film piezoelectrics are widely investigated for actuators and energy harvesters, but there are few alternatives to toxic lead zirconate titanate. Biocompatible Ca- and Zr-modified BaTiO3 (BCZT) is one of the most promising lead-free alternatives due to its high piezoelectric response. However, the dielectric/piezoelectric properties and structural integrity of BCZT films, which are crucial for their applications, are strongly influenced by the substrate upon which the film is grown and the related processing methods. Here, the in-plane stress, microstructure, dielectric, and piezoelectric properties of 100–500 nm thick high-temperature RF-sputtered BCZT films on industrially relevant Si-based substrates were investigated. Obtaining polycrystalline piezoelectric films required deposition temperatures ≥ 700 °C, but this induced tensile stresses of over 1500 MPa, which caused cracking in all films thicker than 200 nm. This degraded the dielectric, piezoelectric, and ferroelectric properties of films with larger electrode areas for applications. Films on SrTiO3, on the other hand, had a compressive residual stress, with fewer defects and no cracks. The grain size and surface roughness increased with increasing deposition temperature. These findings highlight the challenges in processing BCZT films and their crucial role in advancing lead-free piezoelectric technologies for actual device applications.

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Shinekumar, K., and Soma Dutta. "High-Temperature Piezoelectrics with Large Piezoelectric Coefficients." Journal of Electronic Materials 44, no. 2 (December 4, 2014): 613–22. http://dx.doi.org/10.1007/s11664-014-3534-2.

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Chen, Shaobo, Xiangrong Chen, Zhaoyi Zeng, Huayun Geng, and Huabing Yin. "The coexistence of superior intrinsic piezoelectricity and thermoelectricity in two-dimensional Janus α-TeSSe." Physical Chemistry Chemical Physics 23, no. 47 (2021): 26955–66. http://dx.doi.org/10.1039/d1cp04749c.

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A new group-VI Janus ternary compounds α-TeSSe monolayer exhibits outstanding piezoelectric and thermoelectric performances, which has broad application prospects in the fields of piezoelectrics and thermoelectrics.

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Meng, Yanfang, Genqiang Chen, and Maoyong Huang. "Piezoelectric Materials: Properties, Advancements, and Design Strategies for High-Temperature Applications." Nanomaterials 12, no. 7 (April 1, 2022): 1171. http://dx.doi.org/10.3390/nano12071171.

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Piezoelectronics, as an efficient approach for energy conversion and sensing, have a far-reaching influence on energy harvesting, precise instruments, sensing, health monitoring and so on. A majority of the previous works on piezoelectronics concentrated on the materials that are applied at close to room temperatures. However, there is inadequate research on the materials for high-temperature piezoelectric applications, yet they also have important applications in the critical equipment of aeroengines and nuclear reactors in harsh and high-temperature conditions. In this review, we briefly introduce fundamental knowledge about the piezoelectric effect, and emphatically elucidate high-temperature piezoelectrics, involving: the typical piezoelectric materials operated in high temperatures, and the applications, limiting factors, prospects and challenges of piezoelectricity at high temperatures.

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Wang, Aochen, Ming Hu, Liwei Zhou, and Xiaoyong Qiang. "Self-Powered Wearable Pressure Sensors with Enhanced Piezoelectric Properties of Aligned P(VDF-TrFE)/MWCNT Composites for Monitoring Human Physiological and Muscle Motion Signs." Nanomaterials 8, no. 12 (December 7, 2018): 1021. http://dx.doi.org/10.3390/nano8121021.

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Self-powered operation, flexibility, excellent mechanical properties, and ultra-high sensitivity are highly desired properties for pressure sensors in human health monitoring and anthropomorphic robotic systems. Piezoelectric pressure sensors, with enhanced electromechanical performance to effectively distinguish multiple mechanical stimuli (including pressing, stretching, bending, and twisting), have attracted interest to precisely acquire the weak signals of the human body. In this work, we prepared a poly(vinylidene fluoride-trifluoroethylene)/ multi-walled carbon nanotube (P(VDF-TrFE)/MWCNT) composite by an electrospinning process and stretched it to achieve alignment of the polymer chains. The composite membrane demonstrated excellent piezoelectricy, favorable mechanical strength, and high sensitivity. The piezoelectric coefficient d33 value was approximately 50 pm/V, the Young’s modulus was ~0.986 GPa, and the sensitivity was ~540 mV/N. The resulting composite membrane was employed as a piezoelectric pressure sensor to monitor small physiological signals including pulse, breath, and small motions of muscle and joints such as swallowing, chewing, and finger and wrist movements. Moderate doping with carbon nanotubes had a positive impact on the formation of the β phase of the piezoelectric device, and the piezoelectric pressure sensor has the potential for application in health care systems and smart wearable devices.

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Tyunina, Marina, Jan Miksovsky, Tomas Kocourek, and Alexandr Dejneka. "Hysteresis-Free Piezoresponse in Thermally Strained Ferroelectric Barium Titanate Films." Electronic Materials 2, no. 1 (January 14, 2021): 17–23. http://dx.doi.org/10.3390/electronicmat2010002.

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Modern technology asks for thin films of sustainable piezoelectrics, whereas electro-mechanical properties of such films are poorly explored and controlled. Here, dynamic and quasi-static polarization, dielectric, and piezoelectric responses were experimentally studied in thin-film stacks of barium titanate sandwiched between electrodes and grown on top of strontium titanate substrate. Accurate piezoelectric characterization was secured by using double beam interferometric technique. All out-of-plane responses were found to be hysteresis-free. Effective piezoelectric coefficient ~50 pm/V and linear strain-voltage characteristic were achieved. The observed behavior was ascribed to field induced out-of-plane polarization, whereas spontaneous polarization is in-plane due to in-plane tensile thermal strain. Hysteresis-free linear piezoresponse was anticipated in thin films on commercial silicon substrates, enabling large thermal strain.

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Yang, Hao, Jinyan Zhao, Wei Ren, Zuo-Guang Ye, K. B. Vinayakumar, Rosana A. Dias, Rui M. R. Pinto, Jian Zhuang, and Nan Zhang. "Lead free 0.9Na_1/2Bi_1/2TiO₃–0.1BaZr_0.2Ti_0.8O₃ thin film with large piezoelectric electrostrain." Applied Physics Letters 121, no. 13 (September 26, 2022): 132903. http://dx.doi.org/10.1063/5.0106934.

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A sodium bismuth titanate-based thin film is widely investigated lead-free piezoelectrics with potential applications for modern micro-devices such as PiezoMEMS. In this work, a 0.9Na1/2Bi1/2TiO3–0.1BaZr0.2Ti0.8O3 thin film was deposited on a Pt/Ti/SiO2/Si (001) substrate by the sol–gel spin coating method. The deposited piezoelectric film shows low dielectric loss and high remnant polarization. The measured ferroelectricity loop showed a coercive field of 110 kV/cm and a saturation polarization of 46.83 μC/cm2. The piezoelectric response of this thin film does not decrease from room temperature to around 100 °C. The fabricated piezoelectric device with bottom and top electrodes showed a large macro-scale strain value of ∼4% under the DC (30 V) and AC voltages (f = 800 kHz, Vpp = 10 V).

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Soedarto, Totok, and Taufiq Arif Setyanto. "Perancangan Signal Conditioning Untuk Sensor Piezoelectric." Wave: Jurnal Ilmiah Teknologi Maritim 6, no. 1 (January 24, 2019): 13–20. http://dx.doi.org/10.29122/jurnalwave.v6i1.3320.

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Perancangan rangkaian interface atau signal conditioning untuk optimasi penggunaan sensor berbasis material piezoelectric mempunyai peranan sangat penting. Karena aplikasi-aplikasi dari material piezoelectrik sangatlah luas, mulai dari hal-hal yang menyangkut mainan anak-anak sampai dengan keperluan uji laboratorium bahkan sensor-sensor militer dan interfacing terhadap rangkaian elektronik sangatlah bergantung pada aplikasinya. Dalam banyak hal, material piezoelectric dapat secara langsung dihubungkan pada rangkaian elektronik tanpa pertimbangan memerlukan interface khusus. Namun demikian, untuk hal-hal tertentu masih dibutuhkan sebuah rangkaian interface, ada beberapa langkah yang harus dipertimbangkan dalam perancangan interface yang menyangkut topologi yang paling sesuai untuk aplikasi yang dibutuhkan. Pada makalah ini hanya dibahas tentang perancangan dan pembuatan signal conditioning untuk keperluan pengujian di lab Hidrodinamika.

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Hu, Wei, Xin Wei, and Xiao Zhu Xie. "Modeling and Simulation of Micro Hydraulic Transducer Based on Component Library." Advanced Materials Research 505 (April 2012): 106–11. http://dx.doi.org/10.4028/www.scientific.net/amr.505.106.

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For MHT is an integrated system for different domains, namely fluids, structures, piezoelectrics and circuitry, a component library consisting of inlets, outlets, chambers and piezoelectric blocks is developed with Modelica. The governing equations of inlet and outlet channels, chamber and piezoelectric block are proposed and parameter models are created based on object-oriented method with Modelica. Then the model of MHT is established by connecting different components’ pins of equivalent type. Simulation results on Dymola show accordance with that on Simulink, which indicates that this method can achieve high efficiency and precision.

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Ye, Zhe Yu, and Zhi Yong Wang. "Piezoelectrics-Based Integrated Optical Waveguide for Mach-Zehnder Interferometer as the Modulator in Microwave Photonic Link." Advanced Materials Research 421 (December 2011): 31–34. http://dx.doi.org/10.4028/www.scientific.net/amr.421.31.

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Microwave photonic link (MPL), which processes microwave signal with photonic technologies, has offered many advantages such as increased channel capacity, immunity to RF disturbance, reduction of size and weight, and low loss. External modulation of the MPL applies Mach-Zehnder interferometer (MZI) for the modulating. The traditional phase transitional behavior of the EO device lacks the performances required for quick response, low half-wave voltage V and high loaded power, while maintaining low noise, high SNR, and large dynamic range operation. This paper proposed a method in which the piezoelectric ceramic-based integrated optical waveguide with 3dB loss at the highest power was applied to the MZI. We built the physical model for the phase transitional behavior based on the piezoelectrics, analyzed the piezoelectric properties of ceramics. The impacts of the piezoelectric ceramic on the property of MPL were discussed numerically.

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Miriyala, Kumaraswamy, and Ranjith Ramadurai. "Microstructural influence on piezoresponse and leakage current behavior of Na0.5Bi0.5TiO3 Thin Films." MRS Advances 1, no. 37 (2016): 2597–602. http://dx.doi.org/10.1557/adv.2016.350.

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AbstractSodium bismuth titanate (Na0.5Bi0.5TiO3: NBT) a lead free piezoelectric; exhibits promising features such that it could be an alternate to lead based piezoelectrics. In this work, we report the microstructural influence on piezoelectric and leakage current behavior of NBT thin films grown by pulsed laser ablation (PLD). Various microstructural features like coarse faceted grains and fine spherical grains was achieved by effective optimization of substrate temperature and oxygen partial pressures. The studies reveals that, leakage current of NBT thin films were dominated by interface limited modified Schottky emission type of conduction. The piezoelectric domain studies reveal that for NBT thin films with fine spherical grain the domain pattern was highly dominated by the morphology and in the case of coarse faceted grains the domains were relatively large and the domains were extending beyond the grain boundaries.

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Camargo-Chávez, J. E., S. Arceo-Díaz, E. E. Bricio-Barrios, and R. E. Chávez-Valdez. "Piezoelectric mathematical modeling; technological feasibility in the generation and storage of electric charge." Journal of Physics: Conference Series 2159, no. 1 (January 1, 2022): 012009. http://dx.doi.org/10.1088/1742-6596/2159/1/012009.

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Abstract Emerging technologies are efficient alternatives for satisfying the growing demand for sustainable and cheap energy sources. Piezoelectrics are one of the most promising energy sources derived from emerging technologies. These materials are capable of converting mechanical energy into electricity or vice versa. Piezoelectrics have been used for almost a hundred years to generate electrical and sound pulses. However, the use of piezoelectrics for power generation is constrained by the cost associated with equipment and infrastructure. This problem has been addressed through mathematical models that relate the physical and electrical properties of the piezoelectric material with the voltage generated. Although these models have high performance, they do not incorporate voltage rectification and electrical charge storage stages. This work presents a mathematical model that describes the relationship of the physical and electromechanical properties of a system employing a piezoelectric for energy generation. The voltage of the system and the charge stored in a capacitor are calculated through this model. Also, contour diagrams are presented as a tool for facilitating the efficiency of energy generation.

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Li, Fei, Matthew J. Cabral, Bin Xu, Zhenxiang Cheng, Elizabeth C. Dickey, James M. LeBeau, Jianli Wang, et al. "Giant piezoelectricity of Sm-doped Pb(Mg _1/3 Nb _2/3 )O ₃ -PbTiO ₃ single crystals." Science 364, no. 6437 (April 19, 2019): 264–68. http://dx.doi.org/10.1126/science.aaw2781.

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Samarium supersensors Piezoelectric materials produce electric charge in response to changes in stress and are thus good sensor materials. One challenge has been growing single-crystal piezoelectrics with uniform properties. As of now, much of the crystal is discarded because of compositional variations. Li et al. synthesized single crystals of samarium-doped Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 that have uniform and extremely high piezoelectric properties (see the Perspective by Hlinka). These crystals are ideal for a variety of sensing applications and could reduce cost by eliminating waste. Science , this issue p. 264 ; see also p. 228

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Matzen, S., S. Gable, N. Lequet, S. Yousfi, K. Rani, T. Maroutian, G. Agnus, H. Bouyanfif, and P. Lecoeur. "High piezoelectricity in epitaxial BiFeO₃ microcantilevers." Applied Physics Letters 121, no. 14 (October 3, 2022): 142901. http://dx.doi.org/10.1063/5.0105404.

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The large switchable ferroelectric polarization and lead-free composition of BiFeO3 make it a promising candidate as an active material in numerous applications, in particular, in micro-electro-mechanical systems (MEMS) when BiFeO3 is integrated in a thin film form on a silicon substrate. Here, 200-nm-thick Mn-doped BiFeO3 thin films have been epitaxially grown on a SrRuO3/SrTiO3/Si substrate and patterned into microcantilevers as prototype device structures for piezoelectric actuation. The devices demonstrate excellent ferroelectric response with a remanent polarization of 55 μC/cm2. The epitaxial BiFeO3 MEMS exhibit very high piezoelectric response with transverse piezoelectric coefficient d31 reaching 83 pm/V. The BiFeO3 cantilevers show larger electromechanical performance (the ratio of curvature/electric field) than that of state-of-art piezoelectric cantilevers, including well-known PZT (Pb(Zr,Ti)O3) and the hyper-active PMN–PT (Pb(Mg1/3Nb2/3)O3-PbTiO3). In addition, the piezoelectricity in BiFeO3 MEMS is found to depend on the ferroelectric polarization direction, which could originate from the flexoelectric effect and be exploited to further enhance the electromechanical performance of the devices. These results could potentially lead to a replacement of lead-based piezoelectrics by BiFeO3 in many microdevices.

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Cao, Hong Xia, Chuang Zhang, Qing Quan Liu, and You Bao Wang. "Elastomechanical Study of Magnetoeletric Coupling in Bilayer of Lithium Zinc Ferrite and Lead Zirconate Titanate." Advanced Materials Research 602-604 (December 2012): 813–20. http://dx.doi.org/10.4028/www.scientific.net/amr.602-604.813.

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A theoretical model based on the constitutive equations of piezoelectrics and magnetostrictor is introduced to discuss the magnetoelectric (ME) coupling in freebody bilayer containing magnetostrictive and piezoelectric phases. The ME coupling at low frequency of Ni0.8Zn0.2Fe2O4–PZT bilayer have been studied by using the model and the corresponding material parameters of individual phases. The results show that the ME voltage coefficients can increase to a maximum at a given volume fraction of piezoelectric phase. An approximately linear increase of the maximum has been obtained with strengthening interface coupling. Analysis shows that large magnetostriction, appropriate volume fraction and ideal interface coupling are key ingredients for obtaining excellent ME performance.

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Sivanantham, A., J. Devaraj, Shravan Kumar Vengala, Haider M. Abbas, and Y. Sri Lalitha. "Micro-power design of a fully autonomous energy harvesting circuit for arrays of piezoelectric transducers." E3S Web of Conferences 564 (2024): 01005. http://dx.doi.org/10.1051/e3sconf/202456401005.

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Piezoelectric energy harvesting is a promising technology due to its ability to convert vibrations into electricity with a simple design and adaptable sizing. This technology allows us to capture energy from everyday movements and power devices. The size of the harvester significantly impacts its weight, how it’s made, the amount of power it generates, and where it can be used.While a single piezoelectric element can harvest energy, an array of them combined with a vibration source can produce more power. However, the material properties of commonly used piezoelectrics, like Lead Zirconate Titanate (PZT), can limit efficiency. To improve this, additional circuits with rectifier bridges and capacitors are used.

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Yu, Yu Min. "Design and Analysis of a Piezoelectric Actuator." Advanced Materials Research 308-310 (August 2011): 2131–34. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.2131.

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Active materials are a group of solid-state materials whose geometric shape can be related to an energy input in the form of heat, light, electric field, or magnetic field. In the application of active materials to electromechanical energy conversion, electrical energy may be input to the material and the resulting deformation of the material can be used to move a load. The most common active materials used in actuators are piezoelectrics, magnetostrictives, and SMAs. In this paper, a piezoelectric actuation concept is presented that uses a new feed-screw motion accumulation technique. The feed-screw concept involves accumulating high frequency actuation strokes of a piezoelectric stack (driving element) by intermittently rotating nuts on an output feed-screw. The main parts of piezoelectric actuation such as clamp mechanism, rotary mechanism and “L type” driving mechanism are investigated. From the analysis, the deformation and stress of it are all under allowed value of 65Mn. The mathematics model of upside of rotary mechanism rotation motion is established. The results indicate that, the mechanisms of actuator all are satisfy the need of design

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Parinov, Ivan A., and Alexander V. Cherpakov. "Overview: State-of-the-Art in the Energy Harvesting Based on Piezoelectric Devices for Last Decade." Symmetry 14, no. 4 (April 7, 2022): 765. http://dx.doi.org/10.3390/sym14040765.

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Technologies of energy harvesting have been developed intensively since the beginning of the twenty-first century, presenting themselves as alternatives to traditional energy sources (for instance, batteries) for small-dimensional and low-power electronics. Batteries have numerous shortcomings connected, for example, with restricted service life and the necessity of periodic recharging/replacement that create significant problems for portative and remote devices and for power equipment. Environmental energy covers solar, thermal, and oscillation energy. By this, the vibration energy exists continuously around us due to the operation of numerous artificial structures and mechanisms. Different materials (including piezoelectrics) and conversion mechanisms can transform oscillation energy into electrical energy for use in many devices of energy harvesting. Piezoelectric transducers possessing electric mechanical coupling and demonstrating a high density of power in comparison with electromagnetic and electrostatic sensors are broadly applied for the generation of energy from different oscillation energy sources. For the last decade, novel piezoelectric materials, transformation mechanisms, electrical circuits, and experimental and theoretical approaches with results of computer simulation have been developed for improving different piezoelectric devices of energy harvesting. This overview presents results, obtained in the area of piezoelectric energy harvesting for the last decade, including a wide spectrum of experimental, analytical, and computer simulation investigations.

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35

Upadhyay, Ashutosh, Naveen Kumar, Gobinda Das Adhikary, Ram Prakash Singh, Anupam Mishra, and Rajeev Ranjan. "A combination of large unipolar electrostrain and d₃₃ in a non-ergodic relaxor ferroelectric." Journal of Applied Physics 132, no. 20 (November 28, 2022): 204102. http://dx.doi.org/10.1063/5.0107193.

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One of the important requirements for piezoelectric materials for use as high strain actuators is that they exhibit large unipolar electrostrain with minimum hysteresis. While large unipolar electrostrain >1% is generally achievable in good quality single crystals, most polycrystalline piezoelectric show low values < 0.4%. Unipolar electrostrain 0.5%–0.7% in polycrystalline piezoelectrics has often been reported in Na0.5Bi0.5TiO3-based compositions at the non-ergodic ergodic boundary. Not amenable to poling, such materials exhibit almost nearly zero direct piezoelectric coefficient ( d33 ∼ 0 pC/N) and cannot be simultaneously used as a sensor. In this paper, we report a combination of large unipolar electrostrain of ∼0.6% with small strain hysteresis of 25% in a Sn-modified relaxor ferroelectric system PbTiO3–Bi(Ni1/2Zr1/2)O3. It exhibits d33 ∼ 340 pC/N, which is stable up to 130 °C, and large signal converse piezoelectric coefficient d33* ∼ 1200 pm/V. A combination of large d33 and d33* in the same material makes it an important candidate for simultaneous use as a sensor and high strain actuators. X-ray diffraction study in situ with the electric field suggests that large electrostrain with low strain hysteresis in this system is because of the increased reversible switching of the field stabilized tetragonal ferroelastic domains.

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Camus, Corentin, Pierre-Jean Cottinet, and Claude Richard. "Design Optimization of Piezocomposites Using a Homogenization Model: From Analytical Model to Experimentation." Sensors 24, no. 6 (March 19, 2024): 1957. http://dx.doi.org/10.3390/s24061957.

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In the process of activating non-conductive smart-structures using piezoelectric patches, one possible method is to add a conductive layer to ensure electrical contact of both electrodes of the ceramic. Therefore, depending on the stiffness and the thickness of this layer, changes in the overall piezoelectric properties lead to a loss in the electromechanical coupling that can be implemented. The purpose of this work is to study the impact of this added electrode layer depending on its thickness. A model of the effect of this layer on the piezoelectrical coefficients has been derived from the previous approach of Hashimoto and Yamagushi and successfully compared to experimental data. This global model computes the variation of all the piezoelectric coefficients, and more precisely of k31 or d31 for various brass electrode volumes relative to the ceramic volume. A decrease in the lateral electromechanical coupling factor k31 was observed and quantified. NAVY II PZT piezoelectric transducers were characterized using IEEE standard methods, with brass electrode thicknesses ranging from 50 to 400 microns. The model fits very well as shown by the results, leading to good expectations for the use of this design approach for actuators or sensors embedded in smart-structures.

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Rogée, Lukas, Lvjin Wang, Yi Zhang, Songhua Cai, Peng Wang, Manish Chhowalla, Wei Ji, and Shu Ping Lau. "Ferroelectricity in untwisted heterobilayers of transition metal dichalcogenides." Science 376, no. 6596 (May 27, 2022): 973–78. http://dx.doi.org/10.1126/science.abm5734.

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Two-dimensional materials with out-of-plane (OOP) ferroelectric and piezoelectric properties are highly desirable for the realization of ultrathin ferro- and piezoelectronic devices. We demonstrate unexpected OOP ferroelectricity and piezoelectricity in untwisted, commensurate, and epitaxial MoS 2 /WS 2 heterobilayers synthesized by scalable one-step chemical vapor deposition. We show d 33 piezoelectric constants of 1.95 to 2.09 picometers per volt that are larger than the natural OOP piezoelectric constant of monolayer In 2 Se 3 by a factor of ~6. We demonstrate the modulation of tunneling current by about three orders of magnitude in ferroelectric tunnel junction devices by changing the polarization state of MoS 2 /WS 2 heterobilayers. Our results are consistent with density functional theory, which shows that both symmetry breaking and interlayer sliding give rise to the unexpected properties without the need for invoking twist angles or moiré domains.

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38

Korotkov, L., Likhovaja Likhovaja, R. Levitsky, I. Zachek, and A. Vdovych. "Dielectric, Electromechanical and Elastic Properties of K (NH ) H PO Compounds." Фізика і хімія твердого тіла 16, no. 1 (March 15, 2015): 116–22. http://dx.doi.org/10.15330/pcss.16.1.116-122.

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We describe the available experimental data for the dielectric, piezoelectric, and elastic characteristics of the antiferroelectric crystals, using the proposed microscopic theory. Within the framework of the thermodynamic theory and using the obtained experimental data we calculate the dielectric, piezoelectrlic, and elastic characteristics of the compounds at > 0.32.

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39

Vilkov E. A., Byshevski-Konopko O.A., Temnaya O. S., Kalyabin D. V., and Nikitov S. A. "Electrosound waves in a PT-symmetric piezoelectric structure near the exceptional point." Technical Physics Letters 48, no. 12 (2022): 74. http://dx.doi.org/10.21883/tpl.2022.12.54954.19291.

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The spectral properties of gap electroacoustic waves in PT-symmetric piezoelectric structures of symmetry class 6 are investigated theoretically. It was found out that, at a certain level of loss and gain in piezoelectrics, the symmetric and antisymmetric modes intersect. The intersection point defines an exceptional point of the PT-symmetric structure. It was shown that the frequency dependence of the amplitude at the exceptional point has an extremely narrow resonance peak, which opens up the possibility of creating supersensitive sensors based on PT-symmetric physical structures. Keywords: PT-symmetry, piezoelectrics, electroacoustic waves, gap structure.

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40

NAGATA, Kunihiro, Katsuyosi INA, Toshimasa MANO, and Seiji OMURA. "Piezoelectronic and acoustic properties of porous piezoelectric element." Journal of the Marine Acoustics Society of Japan 22, no. 3 (1995): 183–89. http://dx.doi.org/10.3135/jmasj.22.183.

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41

Zhang Xin-Wu and Zhang Xiao-Qing. "Piezoelectric and acoustic behavior of polypropylene piezoelectret films." Acta Physica Sinica 62, no. 16 (2013): 167702. http://dx.doi.org/10.7498/aps.62.167702.

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42

Koyano, Akio. "Piezoelectric transducer for piezoelectric loudspeaker." Journal of the Acoustical Society of America 81, no. 1 (January 1987): 210. http://dx.doi.org/10.1121/1.394967.

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43

Nan, Ce-Wen, and David R. Clarke. "Piezoelectric Moduli of Piezoelectric Ceramics." Journal of the American Ceramic Society 79, no. 10 (August 9, 2005): 2563–66. http://dx.doi.org/10.1111/j.1151-2916.1996.tb09016.x.

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He, Zhongchen, François Rault, Astha Vishwakarma, Elham Mohsenzadeh, and Fabien Salaün. "High-Aligned PVDF Nanofibers with a High Electroactive Phase Prepared by Systematically Optimizing the Solution Property and Process Parameters of Electrospinning." Coatings 12, no. 9 (September 7, 2022): 1310. http://dx.doi.org/10.3390/coatings12091310.

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Poly(vinylidene fluoride) (PVDF)-electrosprayed nanofibers have been the subject of much research due to their flexibility and piezoelectric properties compared to other piezoelectrics, for example, ceramics or other polymeric materials. The piezoelectric performance of PVDF is mainly related to the presence of β-phase. This study aims to determine the influence of working and formulation parameters on the generation of β-phase, morphology, and crystal structure of PVDF nanofibers. In addition, this research innovatively analyzes the effect of the dispersion state of PVDF molecular chains in the solvent on the electrospinning results. The morphology and crystal structure of PVDF nanofibers were determined using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and Fourier transform infrared spectroscopy (FTIR). Beadless nanofibers are obtained when the PVDF concentration reaches the semi-diluted regime entangled in dimethylformamide (DMF) or DMF/acetone solution. The optimization of the process parameters (static collector, tip to collector distance—25 cm, flow rate—1 mL/h, applied voltage—20 kV) allows the increase in the β-phase fraction from 68.3% ± 1.2% to 94.5% ± 0.6% for a PVDF concentration of 25 w/v% in a DMF/acetone mixture (2/3 v/v). With these same parameters applied to a rotating collector, it was observed that the piezoelectric performance is at maximum for a maximum β-phase fraction of 90.6% ± 1.1%, obtained for a rotational speed of 200 rpm. The effect of orientation of PVDF nanofibers on piezoelectric properties was quantitatively discussed for the first time; the piezoelectric properties are independent of the alignment of the nanofibers.

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Al-Rufai, F. M., B. A. Yakimovich, V. V. Kuvshinov, A. A. Al-Saidi, and D. F. Bordan. "Modelling and Analysis of Piezoelectric Energy Storage System Operation by Means of Software Environment Matlab/Simulink." Intellekt. Sist. Proizv. 20, no. 3 (September 29, 2022): 24–33. http://dx.doi.org/10.22213/2410-9304-2022-3-24-33.

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The interest among researches to electric energy production from vibration energy transformation has been increased recently due to the need of connection of special electronic equipment to the energy source, such as remote sensing system, enabling maintenance and battery change at specified time cost reduction. High energy thickness and sure vibration characteristics of piezoelectric materials increased the application area where low power is required. Energy collection from piezoids is a technology that transforms available environment energy into electric one. Vibration energy collection is preferred since various amplitude and frequency vibrations are available in environment. Vibration energy collectors of piezoelectrical type are widely used due to their simplicity of operation and compatibility with small electromechanical system production technology. A software Matlab / Simulink was used for modelling and analysis of piezoelectric system operation for the present research. The program allowed to develop a model of piezoelectric system. The results of modelling showed the possibility of application of such systems for the required energy production in low-power equipment. This is especially important that these piezoelectrical technologies can be applied for electric energy supply of off-grid individual consumers in the remote districts of the Russian Federation. It is possible since technologies are suitable for application during battery charge, which is especially important for individual household and private houses in various districts of our country.

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KOSEC, MARIJA, BARBARA MALIČ, ANDREJA BENČAN, TADEJ ROJAC, and JENNY TELLIER. "ALKALINE NIOBATE-BASED PIEZOCERAMICS: CRYSTAL STRUCTURE, SYNTHESIS, SINTERING AND MICROSTRUCTURE." Functional Materials Letters 03, no. 01 (March 2010): 15–18. http://dx.doi.org/10.1142/s1793604710000865.

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In this review, the crystal structure and the synthesis of the sodium potassium niobate ( K 0.5 Na 0.5 NbO 3) as a promising candidate for lead-free piezoelectrics are addressed. The sintering and the microstructure as prerequisites for obtaining ceramics with reliable and sufficiently high piezoelectric properties for selected applications are discussed.

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Shinekumar, K., and Soma Dutta. "ChemInform Abstract: High-Temperature Piezoelectrics with Large Piezoelectric Coefficients." ChemInform 46, no. 31 (July 16, 2015): no. http://dx.doi.org/10.1002/chin.201531251.

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Li, Wei, Zhe Wang, Jigong Hao, Peng Fu, Juan Du, Ruiqing Chu, and Zhijun Xu. "Poling effects on the structural, electrical and photoluminescence properties in Sm doped BCST piezoelectric ceramics." Journal of Materials Chemistry C 6, no. 42 (2018): 11312–19. http://dx.doi.org/10.1039/c8tc03960g.

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Zhang, Zhong Hua, Guang Ming Cheng, Jun Wu Kan, Ping Zeng, and Jian Ming Wen. "Influence of Multiple Piezoelectric Effects on Piezoelectric Coefficient of Piezoelectric Ceramics." Applied Mechanics and Materials 101-102 (September 2011): 922–25. http://dx.doi.org/10.4028/www.scientific.net/amm.101-102.922.

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In this paper, theoretical analysis is performed on the influence of multiple piezoelectric effects on piezoelectric coefficients. And a kind of classical piezoelectric ceramics was adopted to conduct the experimental validation. The experimental results of short-circuit boundary condition are obtained by the methods that a capacitor whose capacitance is much larger than that of the stack is parallel with PZT-5. Influence results are obtained through comparing them with open-circuit piezoelectric coefficient. Experimental result shows that multiple piezoelectric effects make piezoelectric coefficient of PZT-5 be altered by 18%.

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Jiang, Xishan, Ning Wang, Jing Zheng, and Jie Pan. "Experimental Validation of Two Types of Force Actuators: A Performance Comparison." Sensors 24, no. 12 (June 18, 2024): 3950. http://dx.doi.org/10.3390/s24123950.

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This paper experimentally investigates the performance of piezoelectric force actuators. Using the same encapsulated piezoelectric stack, an inertial-type actuator and a frame-type actuator are constructed for performance comparison. The experimental results are also used to validate the recently established actuator models, whilst the mechanical and piezoelectrical parameters of the models are experimentally identified. The performance of the actuators is described by the transmitted force(s) and input power flow from the actuators to the base structure with reference to the same electrical input voltage to the stack. The validation is deemed successful due to the strong agreement observed between the measured and predicted actuator performances. Additionally, it is discovered that the frame-type actuator has the capacity to produce significantly higher transmitted forces and input power flow to the base structure compared to the inertial-type actuator. The mechanism underlying the performance disparity between these two types of actuators is also examined. This paper clarifies the mechanism, shedding light on the design and optimization of piezoelectric actuators.

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Journal articles on the topic 'Piezoelectric'

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