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Piezoelectricity and Piezoelectric Properties
2016This introductory chapter focuses on the fundamental explanations of piezoelectricity, pyroelectricity and ferroelectricity. Electromechanical material tensor coefficients for piezoelectric ceramics, equations of state and mutual thermodynamic relations between coefficients are discussed.
Jiří Erhart +2 more
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The Piezoelectric Medium and Piezoelectric Sensitivity
2018The piezoelectric effect and related electromechanical properties are described, and examples of modern piezoelectric materials and their sensitivity are considered. Full sets of electromechanical constants of various piezoelectric materials are given for comparison.
Topolov V. Y., Bowen C. R., Bisegna P.
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Influence of Multiple Piezoelectric Effects on Piezoelectric Coefficient of Piezoelectric Ceramics
Applied Mechanics and Materials, 2011In 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 ...
Zhong Hua Zhang +4 more
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Piezoelectric gyro element and piezoelectric gyroscope
The Journal of the Acoustical Society of America, 2008A piezoelectric gyro element including: a piezoelectric vibration body, which has a shape of a rectangular column with a rectangular section, the piezoelectric vibration body being fixed on one end; first driving electrodes formed on opposing first side faces of the piezoelectric vibration body; second and third driving electrodes formed separated from
Seiichiro Ogura, Yoshihiro Kobayashi
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Piezoelectricity of biopolymers
Biorheology, 1995The piezoelectricity of semicrystalline biopolymers was first discovered for wood and bone in the 1950's. Piezoelectric properties have since been investigated for a number of biological substances, including polysaccharides, proteins and deoxyribonucleates. The shear piezoelectric constants -d14 = d25 were determined for their oriented structures with
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Selection of Piezoelectric Cells for Piezoelectric Transducers
Russian Journal of Nondestructive Testing, 2003A simple technique has been suggested for selecting piezoelectric cells (PC) for piezoelectric transducers used in ultrasonic testing instruments. The technique enables one to evaluate rapidly and efficiently various PC parameters in a wide frequency range.
P. A. Senyutkin, E. F. Chineikina
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Piezoelectric transducer for piezoelectric loudspeaker
The Journal of the Acoustical Society of America, 1987A piezoelectric transducer for use in a piezoelectric loud speaker includes a metallic plate and a piezoelectric wafer fixed to at least one face of the metallic plate, a first end of the piezoelectric transducer being adapted to be clamped to the frame of the loud speaker and a second end being adapted to be connected to a cone diaphragm in the loud ...
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Fundamentals on Piezoelectricity
2004The topic of the following chapter is relatively difficult and includes different areas of knowledge. The piezoelectric phenomenon is a complex one and covers concepts of electronics as well as most of the areas of classical physics such as: mechanics, elasticity and strength of materials, thermodynamics, acoustics, wave’s propagation, optics ...
Antonio Arnau, David Soares
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IEEE Engineering in Medicine and Biology Magazine, 1989
Polymers with piezoelectric and pyroelectric properties that make them useful for biomedical applications and devices are considered. The characteristics of such polymers are examined, and transducers made from them are discussed. Laboratory developments of devices using piezoelectric polymers are briefly reviewed, and the slowness of product ...
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Polymers with piezoelectric and pyroelectric properties that make them useful for biomedical applications and devices are considered. The characteristics of such polymers are examined, and transducers made from them are discussed. Laboratory developments of devices using piezoelectric polymers are briefly reviewed, and the slowness of product ...
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Nature, 1948
RECENTLY, Dr. Richard K. Cook1 has criticized as errors certain equations in my book2 in which mixed units occur. In particular, he points to my Eq. (1), which expresses the energy stored in a crystal upon which an arbitrary mechanical strain and an arbitrary electric field are impressed.
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RECENTLY, Dr. Richard K. Cook1 has criticized as errors certain equations in my book2 in which mixed units occur. In particular, he points to my Eq. (1), which expresses the energy stored in a crystal upon which an arbitrary mechanical strain and an arbitrary electric field are impressed.
openaire +2 more sources