Stress and frequency dependence of the direct piezoelectric effect in ferroelectric ceramics

1997 ◽  
Vol 82 (4) ◽  
pp. 1788-1797 ◽  
Author(s):  
Dragan Damjanovic
Keyword(s):  
Frequency Dependence ◽  
Piezoelectric Effect ◽  
Ferroelectric Ceramics ◽  
Direct Piezoelectric Effect

scholarly journals Piezoelectric Energy Harvesting Solutions: A Review

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3512 ◽  
Author(s):  
Corina Covaci ◽  
Aurel Gontean
Keyword(s):  
Energy Harvesting ◽  
Piezoelectric Effect ◽  
Piezoelectric Transducers ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Direct Piezoelectric Effect ◽  
Harvesting Technique ◽  
Different Shapes ◽  
Piezoelectric Devices ◽  
Review Current

The goal of this paper is to review current methods of energy harvesting, while focusing on piezoelectric energy harvesting. The piezoelectric energy harvesting technique is based on the materials’ property of generating an electric field when a mechanical force is applied. This phenomenon is known as the direct piezoelectric effect. Piezoelectric transducers can be of different shapes and materials, making them suitable for a multitude of applications. To optimize the use of piezoelectric devices in applications, a model is needed to observe the behavior in the time and frequency domain. In addition to different aspects of piezoelectric modeling, this paper also presents several circuits used to maximize the energy harvested.

Longitudinal piezoelectric effect and hydrostatic response in novel laminar composites based on ferroelectric ceramics

2019 ◽  
Vol 45 (17) ◽  
pp. 22241-22248 ◽  
Author(s):  
A.A. Nesterov ◽  
V.Yu. Topolov ◽  
M.I. Tolstunov ◽  
A.N. Isaeva
Keyword(s):  
Piezoelectric Effect ◽  
Ferroelectric Ceramics ◽  
Laminar Composites

Note: Direct piezoelectric effect microscopy

2015 ◽  
Vol 86 (7) ◽  
pp. 076102 ◽  
Author(s):  
T. J. A. Mori ◽  
P. Stamenov ◽  
L. S. Dorneles
Keyword(s):  
Piezoelectric Effect ◽  
Direct Piezoelectric Effect

scholarly journals Static Force Measurement Using Piezoelectric Sensors

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Kyungrim Kim ◽  
Jinwook Kim ◽  
Xiaoning Jiang ◽  
Taeyang Kim
Keyword(s):  
Surface Charge ◽  
Piezoelectric Effect ◽  
Force Measurement ◽  
Piezoelectric Materials ◽  
Force Sensor ◽  
Piezoelectric Sensors ◽  
Force Sensing ◽  
Static Force ◽  
Sensing Applications ◽  
Direct Piezoelectric Effect

In force measurement applications, a piezoelectric force sensor is one of the most popular sensors due to its advantages of low cost, linear response, and high sensitivity. Piezoelectric sensors effectively convert dynamic forces to electrical signals by the direct piezoelectric effect, but their use has been limited in measuring static forces due to the easily neutralized surface charge. To overcome this shortcoming, several static (either pure static or quasistatic) force sensing techniques using piezoelectric materials have been developed utilizing several unique parameters rather than just the surface charge produced by an applied force. The parameters for static force measurement include the resonance frequency, electrical impedance, decay time constant, and capacitance. In this review, we discuss the detailed mechanism of these piezoelectric-type, static force sensing methods that use more than the direct piezoelectric effect. We also highlight the challenges and potentials of each method for static force sensing applications.

The direct piezoelectric effect in the globular protein lysozyme

2017 ◽  
Vol 111 (14) ◽  
pp. 142902 ◽  
Author(s):  
A. Stapleton ◽  
M. R. Noor ◽  
J. Sweeney ◽  
V. Casey ◽  
A. L. Kholkin ◽  
...  
Keyword(s):  
Piezoelectric Effect ◽  
Globular Protein ◽  
Direct Piezoelectric Effect

Metal-Core Piezoelectric Fibers for the Detection of Lamb Waves

2010 ◽  
Author(s):  
Jian Liu ◽  
Jinhao Qiu ◽  
Weijie Chang ◽  
Hongli Ji ◽  
Kongjun Zhu
Keyword(s):  
Lamb Wave ◽  
Piezoelectric Effect ◽  
Lamb Waves ◽  
Guided Wave ◽  
Voltage Response ◽  
Metal Core ◽  
Direct Piezoelectric Effect ◽  
New Type ◽  
Sensor Voltage ◽  
Piezoelectric Fiber

Metal-core piezoelectric fiber (MPF) is a new type of piezoelectric ceramic device with small size, and has great potential to be used as structurally integrated transducers for guided-wave (GW) structural health monitoring. This paper focuses on the use of MPF as ultrasonic Lamb wave receivers. First, the MPF sensor voltage response is derived by coupling the direct piezoelectric effect to the wave strain field excited by circular crested actuator. The obtained theoretical result is validated on an aluminum plate. Furthermore, the experiment that compares the MPF response to Lamb wave with the PZT response is performed. The results show that MPF sensors can be used to sense Lamb waves clearly. In the end, the directivity of MPF response to Lamb waves was investigated, and another experiment is performed to examine the directivity of MPF response to Lamb waves. The result shows that MPF has high directivity, which can be exploited to triangulate the location of an ultrasound source without prior knowledge of the wave velocity in the medium.

Lesser-known piezoelectric and pyroelectric applications of electroactive polymers

2005 ◽  
Vol 889 ◽  
Author(s):  
Sidney B. Lang ◽  
Supasarote Muensit
Keyword(s):  
Infrared Detectors ◽  
Polyvinylidene Fluoride ◽  
Piezoelectric Effect ◽  
Ferroelectric Ceramics ◽  
Porous Polymers ◽  
Large Area ◽  
Infrared Sensors ◽  
Pyroelectric Effect ◽  
Ultrasonic Devices ◽  
Property Measurement

ABSTRACTThe piezoelectric effect was first observed in polyvinylidene fluoride polymer (PVDF) in 1969 and the pyroelectric effect was found several years later. A number of additional ferroelectric polymers have been discovered since that time including the copolymer PVDF with trifluoroethylene (P(VDF-TrFE)), and the odd-numbered nylons. A large number of applications of piezoelectricity and pyroelectricity have been developed. The magnitudes of the effects in polymers are much lower than those of ferroelectric ceramics (an exception is the piezoelectric effect in porous polymers). However, other factors make these very desirable materials for applications. The polymers have low permittivities, low acoustic impedances and low thermal conductivities. They are available in large area sheets and they are flexible and relatively low in cost. Major applications include microphones and loudspeakers, ultrasonic devices, SAW transducers, actuators, infrared detectors and many others. This review will describe some of the lesser-known applications of these materials in the fields of tactile devices, energy conversion, porous polymers, property measurement, pyroelectric infrared sensors, shock sensors and space science.

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