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Piezoelectric Moduli of Piezoelectric Ceramics
Journal of the American Ceramic Society, 1996The effective piezoelectric moduli of polycrystalline piezoelectric ceramics are calculated using a straightforward averaging method (a Voigt average) and a more rigorous effective‐medium theory recently developed for piezocomposites. The effects of polarization orientation within each crystallographic domain and the shape of the domain on the ...
Ce‐Wen Nan, David R. Clarke
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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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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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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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Piezoelectric crystal biosensors
Biosensors and Bioelectronics, 1990The recent development of piezoelectric devices as biosensors is reviewed. Biological materials, like enzymes, lipids, antibodies and antigens, have been used as specific coatings and were utilized for the determination of different substrates. Methods of protein coating and several applications are reported including microgravimetric immunoassays ...
J, Ngeh-Ngwainbi +2 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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The Physics Teacher, 1963
Certain crystals of polar symmetry develop electrical surface charges when subjected to mechanical stresses and, conversely, deform when subjected to electric fields. These properties find applications in radio to stabilize frequencies of transmitters and in such acoustical devices as the crystal microphone, speaker and phonograph pick-up. Instructions
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Certain crystals of polar symmetry develop electrical surface charges when subjected to mechanical stresses and, conversely, deform when subjected to electric fields. These properties find applications in radio to stabilize frequencies of transmitters and in such acoustical devices as the crystal microphone, speaker and phonograph pick-up. Instructions
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