Results 281 to 290 of about 216,198 (338)
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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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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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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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, 2020
Charge separation and surface chemistry are essential for photocatalytic reaction, which is challenging to manipulate the performance of catalyst.
Yawei Feng +5 more
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Charge separation and surface chemistry are essential for photocatalytic reaction, which is challenging to manipulate the performance of catalyst.
Yawei Feng +5 more
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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.
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Large Piezoelectricity in Ternary Lead‐Free Single Crystals
Advanced Electronic Materials, 2019Since industry‐standard piezoelectric materials, such as lead zirconium titanate ceramics, contain toxic lead, a rapid surge in research on lead‐free piezoelectric materials is occurring due to concerns over environmental safety and human health.
Yaojin Wang +6 more
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Piezoelectric vibration element and piezoelectric filter
The Journal of the Acoustical Society of America, 2007A piezoelectric oscillator using zinc oxide as a piezoelectric plate which eliminates unwanted resonance called inharmonic overtone by optimizing ratio Le/H of driving electrode length Le to oscillator thickness H. Ratio Le/H is set between 4 and 100 in the piezoelectric oscillator polarized in a thickness direction of a piezoelectric plate and using ...
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Transparent ferroelectric crystals with ultrahigh piezoelectricity
Nature, 2020Chaorui Qiu +11 more
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Composites. Part A, Applied science and manufacturing, 2019
Poly(vinylidene fluoride) (PVDF) and its copolymers with high piezoelectricity are of great interest for high efficient energy harvesting devices. In this study, carbon black (CB) and few-layer graphene (FLG) were added into one kind of copolymers of ...
Jing Cai +7 more
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Poly(vinylidene fluoride) (PVDF) and its copolymers with high piezoelectricity are of great interest for high efficient energy harvesting devices. In this study, carbon black (CB) and few-layer graphene (FLG) were added into one kind of copolymers of ...
Jing Cai +7 more
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Ultrahigh piezoelectricity in ferroelectric ceramics by design
Nature Materials, 2018Fei Li +11 more
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