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Lead zirconate titanate films for d33 mode cantilever actuators
Sensors and Actuators A: Physical, 2003Abstract Piezoelectric Pb(Zr 0.52 Ti 0.48 )O 3 (PZT 52/48) cantilever actuators that operate in the d 33 mode were fabricated using surface micromaching techniques. The cantilevers are composed of a PZT thin film on a low stress silicon nitride (Si x N y ) support buffered by a layer of ZrO 2 .
Q.Q. Zhang +5 more
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Verification of a model for the piezoelectric d33 coefficient of cellular electret films
Journal of Applied Physics, 2005An existing model for the piezoelectric thickness coefficient (d33 coefficient) of cellular polymers is tested with experimental data obtained from two differently manufactured cellular polypropylene (PP) materials. The model assumes the cellular film to consist of plane parallel solid and gaseous layers charged at their interfaces.
Joachim Hillenbrand +2 more
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Piezoelectric d33 coefficient of cellular polypropylene subjected to expansion by pressure treatment
Applied Physics Letters, 2004The piezoelectric activity of charged cellular polypropylene films of originally 40 and 50μm thickness can be significantly increased by thickness expansion due to an exposure to high pressure for time periods of the order of hours. After such a treatment, the d33 coefficient, measured by quasistatic and interferometric methods, is found to be as high ...
X. Zhang, J. Hillenbrand, G. M. Sessler
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d33 mode piezoelectric diaphragm based acoustic transducer with high sensitivity
Sensors and Actuators A: Physical, 2013Abstract This paper presents the design, fabrication, and characterization of an acoustic transducer using a piezoelectric freestanding bulk diaphragm as the sensing element. The diaphragm bearing the spiral electrode operates in d 33 mode, which allows the in-plane deformation of the diaphragm to be converted to the out-of-plane deformation and ...
Shen, Zhiyuan +4 more
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The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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High d33 Lead-Free Piezoceramics: A Review
Journal of Electronic Materials, 2022P. K. Panda +3 more
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Time dependence of piezoelectric d33 coefficient of cellular ferroelectret polypropylene film
Applied Physics Letters, 2011Due to the inherent viscosity of polymer, piezoelectric response in the thickness direction (d33) of cellular ferroelectret films usually depends on the time of measurement. In this letter, the micromechanical theory of viscoelastic composite was extended to predict the time dependence of the overall piezoelectric d33 coefficient of voided charged ...
Yongping Wan +3 more
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The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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