Results 261 to 270 of about 148,391 (282)

Piezoelectric Properties of Ferroelectret

Ferroelectrics, 2011
Ferroelectret films (FFs) were fabricated using porous polyethylene (p-PE) film with various polarities treated by corona discharge. Their piezoelectric constant in the direction perpendicular to their surface was over 100 pC/N Hence, in order to clarify the piezoelectric motion, Piezo-Response Microscope (PRM) measurements and perpendicular elasticity
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Piezoelectric membranes for separation processes: Fabrication and piezoelectric properties

Journal of Membrane Science, 2013
Abstract Piezoelectric membranes were produced by “poling” prefabricated polyvinylidene fluoride (PVDF) membranes in an electric field. Scanning electron microscopy (SEM) studies revealed that electrical poling changed the microstructure of membranes significantly.
Darestani, Mariam T. (R19471), Coster, Hans G., Chilcott, Terry C., Fleming, Simon, Nagarajan, Valanoor, An, Honglin   +5 more
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MECHANICAL TOUGHNESS AND PIEZOELECTRIC PROPERTIES IN A PIEZOELECTRIC COMPOSITE

Integrated Ferroelectrics, 2007
ABSTRACT The objective of this study is to fabricate a piezoelectric composite consisting of a piezoelectric ceramic and a high toughness material and to evaluate their electromechanical properties for high force actuator applications. The mixture of the piezoelectric material, PMNZT, and high toughness material, ZrO2, exhibited high piezoelectric ...
SOON-JONG JEONG, JUNG-BAE KIM
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PROPERTIES OF PIEZOELECTRIC MATERIALS

1964
Abstract : The purpose of this monograph is to provide a source of data on a wide variety of piezoelectric materials which will be useful to those conducting research in this area as well as to the engineer designing ultrasonic transducers, filters, and other piezoelectric devices.
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Properties of Dense PLZT Piezoelectrics

Journal of Intelligent Material Systems and Structures, 1993
Perovskite PZT and PLZT ceramics have been hot- forged to densification > 98 % of their theoretical values. The piezoelectric d33 coefficient in the PLZT dense ceramics exceeds 650 pC/N compared to 550 pC/N for conventionally sintered ceramics. In addition, the microstructure in these samples is much improved, and a substantial amount of grain ...
R.R. Neurgaonkar, J.R. Oliver, J.G. Nelson   +2 more
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New Materials with Piezoelectric Properties

2005 12th International Symposium on Electrets, 2006
The discovery of a piezoelectric response in low density polypropylene (LDPP) suggests that other material, properly treated, might also exhibit both piezoelectric and pyroelectric properties. The search for new materials is inspired by the relatively low temperature (/spl sim/70degC) depolarization of LDPP and the desire to choose independently the ...
D. Farrar, M. Yu, J.E. West, I. Busch-Vishniac, P. Biermann, J.I. Arvelo   +5 more
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Piezoelectric and Electrostrictive Properties

1971
The piezoelectric and electrostrictive properties of crystals (particularly the former) have important practical applications. Piezoelectric crystals are so widely used in hydroacoustics, electroacoustics, communications, and measurement techniques that it is impossible to imagine the operation of many electrical and electronic devices and measuring ...
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Collagen–hydroxyapatite films: piezoelectric properties

Materials Science and Engineering: B, 2001
Abstract In this paper we report a study of the physicochemical, dielectric and piezoelectric properties of anionic collagen and collagen–hydroxyapatite (HA) composites, considering the development of new biomaterials which have potential applications in support for cellular growth and in systems for bone regeneration. The piezoelectric strain tensor
Silva, C. C., Thomazini, D., Pinheiro, A. G., Aranha, N., Figueiro, S. D., Goes, J. C., Sombra, A. S. B.   +6 more
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Piezoelectric properties of ZnO

2021
K.S. Srikanth, Adil Wazeer, P. Mathiyalagan, Shrikant Vidya, Kapil Rajput, Himmat Singh Kushwaha   +5 more
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Piezoelectric properties of GPI crystals

physica status solidi (b), 2003
AbstractIt is found that the piezoelectric properties of glycine phosphite (GPI) were preserved up to 264 K, which contradicts the presence of a symmetry centre phase above TC. The resonance frequency jump at the phase transition was ∼0.15%, which is more than ten times smaller when compared to the sound velocity jump.
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