scholarly journals Dielectrophoresis Structurization of PZT/PDMS Micro-Composite for Elastronic Function: Towards Dielectric and Piezoelectric Enhancement

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4071
Author(s):  
Giulia D’Ambrogio ◽  
Omar Zahhaf ◽  
Minh-Quyen Le ◽  
Jean-Fabien Capsal ◽  
Pierre-Jean Cottinet
Keyword(s):  
Lead Zirconate Titanate ◽  
Piezoelectric Materials ◽  
Low Cost ◽  
Lead Zirconate ◽  
Production Costs ◽  
Ferroelectric Ceramics ◽  
Energy Harvesters ◽  
Preferred Direction ◽  
Flexible Material ◽  
Application Fields

Piezoelectric materials have been used for decades in the field of sensors as transducers and energy harvesters. Among these, piezoelectric composites are emerging being extremely advantageous in terms of production, costs, and versatility. However, the piezoelectric performances of a composite with randomly dispersed filler are not comparable with bulk ferroelectric ceramics and electroactive polymers. In order to achieve highly performing and low-cost materials, this work aims to develop flexible composites made of Lead zirconate titanate (PZT) filler in Polydimethylsiloxane (PDMS) matrix, with a specific internal structure called quasi-1–3 connectivity. Such a structure, comprising particles arranged in columns along a preferred direction, is performed through dielectrophoresis by applying an alternating electric field on the composite before and during the polymerization. The developed flexible material could be introduced into complex structures in various application fields, as sensors for structural monitoring.

scholarly journals Analysis and Comparison of Macro Fiber Composites and Lead Zirconate Titanate (PZT) Discs for an Energy Harvesting Floor

2020 ◽  
Vol 10 (17) ◽  
pp. 5951
Author(s):  
Carlos Quiterio Gómez Muñoz ◽  
Gabriel Zamacola Alcalde ◽  
Fausto Pedro García Márquez
Keyword(s):  
Energy Harvesting ◽  
Lead Zirconate Titanate ◽  
Piezoelectric Materials ◽  
Low Cost ◽  
Clean Energy ◽  
Lead Zirconate ◽  
Piezoelectric Transducers ◽  
Piezoelectric Energy ◽  
Pressure Cycle ◽  
Low Consumption

The main drawback in many electronic devices is the duration of their batteries. Energy harvesting provides a solution for these low-consumption devices. Piezoelectric energy harvesting use is growing because it collects small amounts of clean energy and transforms it to electricity. Synthetic piezoelectric materials are a feasible alternative to generate energy for low consumption systems. In addition to the energy generation, each pressure cycle in the piezoelectric material can provide information for the device, for example, counting the passage of people. The main contribution of this work is to study, build, and test a low-cost energy harvesting floor using piezoelectric transducers to estimate the amount of energy that could be produced for a connected device. Several piezoelectric transducers have been employed and analyzed, providing accurate results.

Novel Transducer for Characterization of Low-Impedance Materials

2013 ◽  
Vol 558 ◽  
pp. 435-444 ◽  
Author(s):  
Roberto Dugnani
Keyword(s):  
Lead Zirconate Titanate ◽  
Acoustic Impedance ◽  
Piezoelectric Materials ◽  
Low Cost ◽  
Biological Tissues ◽  
Lead Zirconate ◽  
Acoustic Properties ◽  
Energy Transmission ◽  
Mechanical Coupling ◽  
Sensor Actuator

Piezoelectric materials such as lead-zirconate-titanate (PZT), lead-metaniobate, and piezo-composites are the materials of choice for acoustic imaging in medical diagnosis as well as underwater ultrasonic microphones and underwater sonar. PZT materials have the advantage of having high electro-mechanical coupling, low internal losses and excellent environmental durability. Nonetheless, in order to improve energy transmission the high acoustic impedance of piezoelectric ceramics needs to be matched to the lower acoustic impedance of biological tissues and water. For actuators resonated in their thickness mode, energy transmission can be improved by means of intermediate layers of material of carefully selected thicknesses and acoustic properties. Sometimes a backing layer is also added to the back of the actuator to damp the acoustic back-wave. The process of making these types of transducers is generally costly due to the nature of the manufacturing process and the required level of accuracy. This paper describes an inexpensive method of manufacture low-cost, low-impedance, piezoelectric transducers. The fundamental physical principles behind this new type of sensor-actuator, as well as various examples of imaging low-impedance targets using a prototype of this newly developed sensor-actuator system will be presented.

scholarly journals SIMULATION AND ANALYSIS OF DIFFERENT PIEZOELECTRIC MATERIALS IN MEMS CANTILEVER FOR ENERGY HARVESTING

2021 ◽  
Vol 9 (1) ◽  
pp. 1321-1328
Author(s):  
Abdul Aziz Khan J , Shanmugaraja P , Kannan S
Keyword(s):  
Energy Harvesting ◽  
Lead Zirconate Titanate ◽  
Piezoelectric Materials ◽  
Low Frequency ◽  
Lead Zirconate ◽  
Vital Role ◽  
Von Mises Stress ◽  
And Performance ◽  
Von Mises ◽  
Implantable Sensor

MEMS Energy Harvesting(EH) devices are excepted to grow in the upcoming years, due to the increasing aspects of MEMS EH devices in vast applications. In Recent advancements in energy harvesting (EH) technologies wireless sensor devices play a vital role to extend their lifetime readily available in natural resources. In this paper the design of MEMS Cantilever at low frequency (100Hz) with different piezoelectric materials Gallium Arsenide (GaAs), Lead Zirconate Titanate (PZT-8), Tellurium Dioxide (TeO2), Zinc oxide (ZnO) is simulated and performance with different materials are compared. The results are analyzed with various parameters such as electric potential voltage, von mises stress, displacement. The paper discusses the suitability of the piezoelectric material for MEMS fully cochlear implantable sensor application.

Pyroelectric behavior and thermally stimulated processes in niobium modified lead zirconate titanate ferroelectric ceramics

2013 ◽  
Vol 113 (4) ◽  
pp. 044104 ◽  
Author(s):  
A. Peláiz-Barranco ◽  
A. C. Garcia-Wong ◽  
Y. González-Abreu ◽  
J. D. S. Guerra
Keyword(s):  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Ferroelectric Ceramics ◽  
Zirconate Titanate

Antenna-Like Tactile Sensor for Thin-Film Piezoelectric Micro-Robots

2013 ◽  
Author(s):  
Ryan Rudy ◽  
Adam J. Cohen ◽  
Jeffrey S. Pulskamp ◽  
Ronald G. Polcawich ◽  
Kenn R. Oldham
Keyword(s):  
Thin Film ◽  
Lead Zirconate Titanate ◽  
Piezoelectric Materials ◽  
Tactile Sensor ◽  
Lead Zirconate ◽  
Obstacle Detection ◽  
Design Parameters ◽  
Small Power ◽  
Impact Detection ◽  
Low Mass

Terrestrial and other millimeter-scale autonomous micro-robots face significant challenges in surveying their environment, due to small power budgets and payload capacities. One low-power, low-mass form of obstacle detection is tactile sensing of contact with other surfaces. In this-paper, a tactile sensor inspired by insect antennae is described, based on thin-film lead-zirconate-titanate (PZT) transduction. Thin-film piezoelectric materials permit actuation and sensing mechanisms to be coupled in very small, compact structures, as well as complement previously developed microrobotic leg mechanisms. Key design parameters for the tactile sensor are introduced and analyzed in terms of sweep frequency and range of motion, and signals from sensor impact are predicted. Experimental results with partially-released prototype actuators show respectable agreement with modeled behavior for dynamic motion, though impact detection is hampered by large feedthrough disturbances. Completed sensors range from 2 to 4 mm in length and are approximately 500 μm in width, with a sweep range of nearly 1 mm demonstrated from a 2 mm long prototype.

Piezoelectric nanoindentation

2006 ◽  
Vol 21 (3) ◽  
pp. 552-556 ◽  
Author(s):  
Andrei Rar ◽  
G.M. Pharr ◽  
W.C. Oliver ◽  
E. Karapetian ◽  
Sergei V. Kalinin
Keyword(s):  
Lead Zirconate Titanate ◽  
Electromechanical Coupling ◽  
Piezoelectric Materials ◽  
Surface Displacement ◽  
Lead Zirconate ◽  
Ferroelectric Materials ◽  
Back Side ◽  
Structure Property ◽  
Load Dependence ◽  
Continuous Stiffness Measurement

Piezoelectric nanoindentation (PNI) has been developed to quantitatively address electromechanical coupling and pressure-induced dynamic phenomena in ferroelectric materials on the nanoscale. In PNI, an oscillating voltage is applied between the back side of the sample and the indenter tip, and the first harmonic of bias-induced surface displacement at the area of indenter contact is detected. PNI is implemented using a standard nanoindentation system equipped with a continuous stiffness measurement system. The piezoresponse of polycrystalline lead zirconate titanate (PZT) and BaTiO3 piezoceramics was studied during a standard nanoindentation experiment. For PZT, the response was found to be load independent, in agreement with theoretical predictions. In polycrystalline barium titanate, a load dependence of the piezoresponse was observed. The potential of piezoelectric nanoindentation for studies of phase transitions and local structure-property relations in piezoelectric materials is discussed.

Composition Dependent Fatigue in Antiferroelectric PZST Ceramics Induced by Bipolar Electric Cycling

2005 ◽  
Vol 475-479 ◽  
pp. 1193-1196
Author(s):  
Long Jie Zhou ◽  
Georg Rixecker ◽  
André Zimmermann ◽  
Fritz Aldinger
Keyword(s):  
Phase Transition ◽  
Hysteresis Loop ◽  
Fatigue Resistance ◽  
Lead Zirconate Titanate ◽  
Hysteresis Loops ◽  
Lead Zirconate ◽  
Ferroelectric Ceramics ◽  
Fatigue Effect ◽  
Zirconate Titanate ◽  
Electric Fatigue

Bipolar electric fatigue in antiferroelectrics of the lead zirconate titanate stannate ceramics family was investigated. Variations in strain hysteresis loops and damages in microstructure of the materials due to the electric cycling were analyzed. The materials showed symmetric or asymmetric suppression of strain hysteresis loop, normal or diffuse AFE-FE phase transition and intact or damaged microstructure after 5×10-7 cycles, indicating a strong composition dependent fatigue effect and the corresponding mechanism. In general, the antiferroelectric materials exhibited much higher fatigue resistance than ferroelectric ceramics reported previously.

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