Journal ArticleDOI
Nonlinear piezoelectric behavior of ceramic bending mode actuators under strong electric fields
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TLDR
In this paper, the nonlinear electromechanical behavior of cantilevered piezoelectric ceramic bimorph, unimorph, and reduced and internally biased oxide wafer actuators is studied in a wide electric field and frequency range.Abstract:
The nonlinear electromechanical behavior of cantilevered piezoelectric ceramic bimorph, unimorph, and reduced and internally biased oxide wafer actuators is studied in a wide electric field and frequency range. It is found that under quasistatic condition, linear relationships between actuator tip displacement-electric field, and blocking force-electric field are only valid under weak field driving. With increasing the driving field, electromechanical nonlinearity begins to contribute significantly to the actuator performance because of ferroelectric hysteresis behavior associated with piezoelectric lead zirconate titanate (PZT)-type ceramic materials. The bending resonance frequencies of all these actuators vary with the magnitude of the electric field. The decrease of resonance frequency with electric field is explained by the increase of elastic compliance of PZT ceramic due to elastic nonlinearity. Mechanical quality factors of the actuators also depend on the magnitude of electric field strength. No significant temperature increase is observed when actuators are driven near resonance frequency under high electric field.read more
Citations
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Journal ArticleDOI
The design, fabrication and evaluation of a MEMS PZT cantilever with an integrated Si proof mass for vibration energy harvesting
TL;DR: In this article, a unimorph PZT cantilever with an integrated Si proof mass, designed for low vibration frequency and high vibration amplitude environment, was designed for MEMS power generators, with an optimal resistive load of 6 kΩ from 2g (g = 9.81 m s−2) acceleration at its resonant frequency of 461.15 Hz.
Journal ArticleDOI
Recent Progress on PZT Based Piezoelectric Energy Harvesting Technologies
TL;DR: In this article, the authors focus on recent progress of piezoelectric energy harvesting technologies based on PbZrxTi1-xO3 (PZT) materials.
Journal ArticleDOI
Unified nonlinear electroelastic dynamics of a bimorph piezoelectric cantilever for energy harvesting, sensing, and actuation
Stephen Leadenham,Alper Erturk +1 more
TL;DR: In this paper, the authors investigated the nonlinear dynamic behavior of a bimorph piezoelectric cantilever under low to moderately high mechanical and electrical excitation levels in energy harvesting, sensing, and actuation.
Journal ArticleDOI
Origin of giant negative piezoelectricity in a layered van der Waals ferroelectric
Lu You,Lu You,Yang Zhang,Shuang Zhou,Shuang Zhou,Apoorva Chaturvedi,Samuel A. Morris,Fucai Liu,Fucai Liu,Lei Chang,Daichi Ichinose,Hiroshi Funakubo,Weijin Hu,Tom Wu,Zheng Liu,Shuai Dong,Junling Wang +16 more
TL;DR: In this article, the authors investigated the atomistic origin of negative longitudinal piezoelectricity in 2D layered ferroelectric CuInP2S6 solids with single crystal x-ray crystallography and density functional theory calculations.
Journal ArticleDOI
Effect of mass and stress on resonant frequency shift of functionalized Pb(Zr0.52Ti0.48)O3 thin film microcantilever for the detection of C-reactive protein
TL;DR: In this article, the resonant frequency change of piezoelectric microcantilevers due to a combination of mass loading and spring constant variation arisen from antigen-antibody interaction of C-reactive protein (CRP).
References
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Journal ArticleDOI
Use of piezoelectric actuators as elements of intelligent structures
Edward F. Crawley,Javier de Luis +1 more
TL;DR: In this paper, a scaling analysis is performed to demonstrate that the effectiveness of actuators is independent of the size of the structure and evaluate various piezoelectric materials based on their effectiveness in transmitting strain to the substructure.
Journal ArticleDOI
The constituent equations of piezoelectric heterogeneous bimorphs
J.G. Smits,W. Choi +1 more
TL;DR: The electromechanical characteristics of a heterogeneous piezoelectric bender subjected to various electrical and mechanical boundary conditions are discussed based on the results of the free bender analysis.
Journal ArticleDOI
The constituent equations of piezoelectric bimorphs
TL;DR: In this paper, a brief review of applications of piezoelectric bimorphs is presented, and the constituent equations which describe the behavior of bimomorphs for various mechanical boundary conditions are derived.
Journal ArticleDOI
The extrinsic nature of nonlinear behavior observed in lead zirconate titanate ferroelectric ceramic
TL;DR: In this paper, a phenomenological theory of Arlt, Dederichs, and Herbiet has been extended to include the nonlinear contributions of lead zirconate titanate Pb(ZrxTi1−x)O3 ceramics.
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