Micro-Power Generators Employing Commercially Available Piezoelectric Materials

2012 ◽  
Author(s):  
Sebastian Roa-Prada
Keyword(s):  
Cantilever Beam ◽  
High Performance ◽  
Piezoelectric Materials ◽  
Geometrical Configuration ◽  
Power Harvesting ◽  
Power Generators ◽  
Electronic Circuitry ◽  
Micro Power ◽  
Fixed End ◽  
Piezoelectric Devices

Piezoelectric devices are among the most efficient and reliable solutions for power harvesting from environment vibrations. Considerable effort has been devoted recently in the engineering community towards reducing the size and increasing the power density of these generators at the micro level. The objectives of this paper are to identify commercially available materials and to determine the geometrical configuration best suited for energy harvesting applications by assessing their performance when used in a cantilever beam micro-generator with a fixed volume. To achieve this objective, a comprehensive database with properties of commercially available piezoelectric materials is first established. Then electro-mechanical simulation is carried out to study the changes in device performance with respect to variations in the geometrical configuration for a vibrating beam with a fixed end and a mass attached at the free tip. Once the materials and geometrical configuration providing the highest power output are identified, other aspects important to system implementation are discussed such as feasibility of fabrication at the desired scale and integration with the electronic circuitry. The results obtained provide guidelines for designing and realizing reduced scale cantilever-beam piezoelectric harvesters employing high performance, commercially available materials.

Power Harvesting for Rotating Structure Using Piezoelectric Generators

2006 ◽  
Author(s):  
Saurav Gupta ◽  
Grant M. Warner
Keyword(s):  
Cantilever Beam ◽  
Piezoelectric Materials ◽  
Ring System ◽  
Rotating Machinery ◽  
Piezoelectric Bimorph ◽  
Mems Sensors ◽  
Power Harvesting ◽  
Slip Ring ◽  
Sensor Signals ◽  
Rotating Structure

Conventional method of measuring the mechanical properties of rotating machinery is to couple sensors on the machine through a slip ring, which is a non-trivial, expensive, lengthy and manpower intensive process. An alternative to this is to use a contactless RF slip ring which has no physical wear and hence no maintenance. But application of contactless RF slip ring is possible only if these services are low powered and sensor signals can be multiplexed. With the advance in low powered MEMS sensors, contactless slip ring system can be used. But providing power to these sensors is an issue. One approach would be to harness power from the untapped surrounding energy which could be used to recharge and/or replace battery powered connections. One method to accomplish this is to use piezoelectric materials (PZT) to capture energy lost due to vibration and rotation of the test equipment. This captured energy can then be used to provide uninterrupted power to the appropriate sensors. Focusing our attention on blades, rotating structures will be modeled as cantilever beam. Piezoelectric bimorph attached to the rotating cantilever beam will provide an estimate for the available power that can be used for harvesting.

Analysis of Power Generating Performance for Unimorph Cantilever Piezoelectric Beams With Interdigitated Electrodes

2005 ◽  
Author(s):  
Changki Mo ◽  
Sunghwan Kim ◽  
William W. Clark
Keyword(s):  
Low Power ◽  
Cantilever Beam ◽  
Piezoelectric Materials ◽  
Design Parameters ◽  
Interdigitated Electrode ◽  
Power Generators ◽  
Energy Harvesters ◽  
Piezoelectric Cantilever ◽  
Power Harvester ◽  
Unimorph Cantilever

A great amount of research has been done to determine whether piezoelectric materials can be used as power generators for a variety of portable and low power consuming devices. Among the possibilities for energy harvesters, the 31-type cantilever piezoelectric benders have been generally used. In this work a unimorph piezoelectric cantilever beam with the interdigitated electrode pattern was examined. The focus of this paper was to develop a model and propose design parameters to improve the power generating performance of the interdigitated piezoelectric power harvester.

A molecular perovskite solid solution with piezoelectricity stronger than lead zirconate titanate

Science ◽  
2019 ◽  
Vol 363 (6432) ◽  
pp. 1206-1210 ◽  
Author(s):  
Wei-Qiang Liao ◽  
Dewei Zhao ◽  
Yuan-Yuan Tang ◽  
Yi Zhang ◽  
Peng-Fei Li ◽  
...  
Keyword(s):  
Solid Solution ◽  
Lead Zirconate Titanate ◽  
High Performance ◽  
Piezoelectric Coefficient ◽  
Piezoelectric Materials ◽  
Lead Zirconate ◽  
Sensing Applications ◽  
Different Types ◽  
Potential Applications ◽  
Piezoelectric Devices

Piezoelectric materials produce electricity when strained, making them ideal for different types of sensing applications. The most effective piezoelectric materials are ceramic solid solutions in which the piezoelectric effect is optimized at what are termed morphotropic phase boundaries (MPBs). Ceramics are not ideal for a variety of applications owing to some of their mechanical properties. We synthesized piezoelectric materials from a molecular perovskite (TMFM)x(TMCM)1–xCdCl3 solid solution (TMFM, trimethylfluoromethyl ammonium; TMCM, trimethylchloromethyl ammonium, 0 ≤ x ≤ 1), in which the MPB exists between monoclinic and hexagonal phases. We found a composition for which the piezoelectric coefficient d33 is ~1540 picocoulombs per newton, comparable to high-performance piezoelectric ceramics. The material has potential applications for wearable piezoelectric devices.

Piezoelectric Devices for Power Harvesting on Mechanical Displacements

2010 ◽  
Vol 670 ◽  
pp. 487-496 ◽  
Author(s):  
Constantin Niţu ◽  
S. Niţu ◽  
B. Grămescu ◽  
C. Mihalache
Keyword(s):  
Electric Power ◽  
Cantilever Beam ◽  
Experimental Investigations ◽  
Portable Devices ◽  
Power Harvesting ◽  
Piezoelectric Devices ◽  
Good Agreement

The paper presents the ability of the piezoelectric devices to capture the environmental vibrations, in order to generate electric power for supplying electronic small portable devices. Theoretical and experimental investigations were performed, both for stack and cantilever beam configuration of the piezoelectric devices, with good agreement between results. An improved mechanical architecture is proposed.

scholarly journals Boosting Performance of Self-Polarized Fully Printed Piezoelectric Nanogenerators via Modulated Strength of Hydrogen Bonding Interactions

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1908
Author(s):  
Hai Li ◽  
Sooman Lim
Keyword(s):  
Hydrogen Bonding ◽  
Composite Film ◽  
High Performance ◽  
Composite Films ◽  
Β Phase ◽  
Hydrogen Bonding Interactions ◽  
Barium Titanate Nanoparticles ◽  
Surface Modified ◽  
Piezoelectric Devices ◽  
Piezoelectric Nanogenerators

Self-polarized piezoelectric devices have attracted significant interest owing to their fabrication processes with low energy consumption. Herein, novel poling-free piezoelectric nanogenerators (PENGs) based on self-polarized polyvinylidene difluoride (PVDF) induced by the incorporation of different surface-modified barium titanate nanoparticles (BTO NPs) were prepared via a fully printing process. To reveal the effect of intermolecular interactions between PVDF and NP surface groups, BTO NPs were modified with hydrophilic polydopamine (PDA) and hydrophobic 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES) to yield PDA-BTO and PFD-BTO, respectively. This study demonstrates that the stronger hydrogen bonding interactions existed in PFD-BTO/PVDF composite film comparative to the PDA-BTO/PVDF composite film induced the higher β-phase formation (90%), which was evidenced by the XRD, FTIR and DSC results, as well as led to a better dispersion of NPs and improved mechanical properties of composite films. Consequently, PFD-BTO/PVDF-based PENGs without electric poling exhibited a significantly improved output voltage of 5.9 V and power density of 102 μW cm−3, which was 1.8 and 2.9 times higher than that of PDA-BTO/PVDF-based PENGs, respectively. This study provides a promising approach for advancing the search for high-performance, self-polarized PENGs in next-generation electric and electronic industries.

scholarly journals Particle Size Effect of Lanthanum-Modified Bismuth Titanate Ceramics on Ferroelectric Effect for Energy Harvesting

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Sangmo Kim ◽  
Thi My Huyen Nguyen ◽  
Rui He ◽  
Chung Wung Bark
Keyword(s):  
Particle Size ◽  
Energy Harvesting ◽  
High Speed ◽  
High Performance ◽  
Bismuth Titanate ◽  
Vinylidene Fluoride ◽  
Piezoelectric Materials ◽  
Renewable Energy Sources ◽  
Particle Size Effect ◽  
Ferroelectric Materials

AbstractPiezoelectric nanogenerators (PNGs) have been studied as renewable energy sources. PNGs consisting of organic piezoelectric materials such as poly(vinylidene fluoride) (PVDF) containing oxide complex powder have attracted much attention for their stretchable and high-performance energy conversion. In this study, we prepared a PNG combined with PVDF and lanthanum-modified bismuth titanate (Bi4−XLaXTi3O12, BLT) ceramics as representative ferroelectric materials. The inserted BLT powder was treated by high-speed ball milling and its particle size reduced to the nanoscale. We also investigated the effect of particle size on the energy-harvesting performance of PNG without polling. As a result, nano-sized powder has a much larger surface area than micro-sized powder and is uniformly distributed inside the PNG. Moreover, nano-sized powder-mixed PNG generated higher power energy (> 4 times) than the PNG inserted micro-sized powder.

Characteristics of Stress Distribution of Micro-Cantilever of Polycrystalline Copper at the Pull-in Voltage

2013 ◽  
Vol 300-301 ◽  
pp. 1309-1312
Author(s):  
Ji Long Su ◽  
Yan Jiao Zhang ◽  
Xing Feng Lian
Keyword(s):  
Stress Distribution ◽  
Cantilever Beam ◽  
Electrostatic Force ◽  
Polycrystalline Copper ◽  
Maximum Deflection ◽  
Micro Cantilever ◽  
Fixed End ◽  
The Relationship

The Ansys simulate software is utilized to analyze pull-in voltages and stresses of the fixed end of micro- cantilever beam with different thicknesses respectively. Based on the analysis of the electrostatic force at the pull-in voltage, the stress of fixed end of micro-beam and the maximum deflection are obtained. The relationship between the stress of fixed end and thickness is established. The results show that the mutation thickness of the stress and the pull-in voltage are at and respectively , it is consistent with the intrinsic size of the polycrystalline copper micro-beam.

Design Optimization of Low Power and Low Frequency Vibration Based MEMS Energy Harvester

2013 ◽  
Vol 475-476 ◽  
pp. 1624-1628
Author(s):  
Hasnizah Aris ◽  
David Fitrio ◽  
Jack Singh
Keyword(s):  
Low Power ◽  
Energy Harvester ◽  
Piezoelectric Materials ◽  
Geometry Optimization ◽  
Low Frequency ◽  
Substrate Thickness ◽  
Power Harvesting ◽  
Low Frequency Vibration ◽  
Length Width ◽  
Development And Utilization

The development and utilization of different structural materials, optimization of the cantilever geometry and power harvesting circuit are the most commonly methods used to increase the power density of MEMS energy harvester. This paper discusses the cantilever geometry optimization process of low power and low frequency of bimorph MEMS energy harvester. Three piezoelectric materials, ZnO, AlN and PZT are deposited on top and bottom of the cantilever Si substrate. This study focuses on the optimization of the cantilevers length, width, substrate thickness and PZe thickness in order to achieve lower than 600 Hz of resonant frequency. The harvested power for this work is in the range of 0.02 ~ 194.49 nW.

Analytical Modeling of a Micro Power Generator Based on MEMS and Piezoelectric Materials

2011 ◽  
Vol 126 (1) ◽  
pp. 106-116 ◽  
Author(s):  
R. I. Rincon-Jara ◽  
R. Ambrosio-L. ◽  
R. Torres ◽  
A. Jimenez-P.
Keyword(s):  
Analytical Modeling ◽  
Piezoelectric Materials ◽  
Power Generator ◽  
Micro Power ◽  
Micro Power Generator
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