Searched for: subject%3A%22Piezoelectric%255C%2Bcomposites%22
(1 - 12 of 12)
document
Stuber, V.L. (author), Mahon, T.R. (author), van der Zwaag, S. (author), Groen, P. (author)
Polymer-piezoceramic composites have drawn a lot of attention for sensor and energy harvesting applications. Poling such materials can be difficult due to the electric field getting mostly distributed over the low dielectric constant matrix. During this process, the electrical matrix conductivity plays a vital role. This work shows how two...
article 2020
document
Deutz, D.B. (author), Mascarenhas, N.T. (author), Schelen, J.B.J. (author), de Leeuw, D.M. (author), van der Zwaag, S. (author), Groen, P. (author)
A highly sensitive, lead-free, and flexible piezoelectric touch sensor is reported based on composite films of alkaline niobate K0.485Na0.485Li0.03NbO3 (KNLN) powders aligned in a polydimethylsiloxane (PDMS) matrix. KNLN powder is fabricated by solid-state sintering and consists of microcubes. The particles are dispersed in uncured PDMS and...
article 2017
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Deutz, D.B. (author), Mascarenhas, N.T. (author), van der Zwaag, S. (author), Groen, W.A. (author)
Composites of aligned (K,Na,Li)NbO3 (KNLN) piezoceramic particles in a PDMS polymer matrix are presented as promising materials for flexible sensors and energy harvesters. Their ease of processing is matched with a relatively high damage tolerance and piezoelectric performance at low dielectric loss. To maximize piezoelectric performance, the...
article 2017
document
Khanbareh, H. (author), der Zwaag, S.van (author), Groen, W.A. (author)
Composites of lead zirconate titanate particles in an epoxy matrix are prepared in the form of 0–3 and quasi 1–3 with different ceramic volume contents from 10% to 50%. Two different processing routes are tested. Firstly a conventional dielectrophoretic structuring is used to induce a chain-like particle configuration, followed by curing the...
article 2017
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James, N.K. (author), Comyn, T. (author), Hall, D. (author), Daniel, L. (author), Kleppe, A. (author), van der Zwaag, S. (author), Groen, W.A. (author)
The poling behaviour of tetragonal lead zirconate titanate (PZT) piezoelectric ceramic particles in a weakly conductive ionomer polymer matrix is investigated using high energy synchrotron X-ray diffraction analysis. The poling efficiency, crystallographic texture and lattice strain of the PZT particles inside the polymer matrix are determined...
article 2016
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Khanbareh, H. (author), Hegde, M. (author), van der Zwaag, S. (author), Groen, W.A. (author)
High performance polymer-ceramic composites are presented as promising candidates for high temperature piezoelectric sensing applications. lead-titanate (PT) ceramic particulate is incorporated into a polyetherimide polymer matrix, (PEI) at a specific volume fraction of 20% in the forms of 0-3 and quasi 1-3. A conventional dielectrophoretic...
conference paper 2015
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Deutz, D.B. (author), Tempelman, E. (author), van der Zwaag, S. (author), Groen, W.A. (author)
To enable the design of more intuitive product user interfaces, the prospects of matching piezoelectric touch sensors with flexible organic light emitting diode (OLED) technology are investigated. Low stiffness piezoelectric composite sensors, combining piezoelectric Pb(Zr,Ti)O3 powder with a polymer matrix, are prepared and compared to existing...
article 2015
document
James, N.K. (author), Lafont, U. (author), van der Zwaag, S. (author), Groen, W.A. (author)
Piezoelectric ceramic-polymer composites with 0-3 connectivity were fabricated using lead zirconium titanate (PZT) powder dispersed in an ionomer (Zn ionomer) and its reference ethylene methacrylic acid copolymer (EMAA) polymer matrix. The PZT-Zn ionomer and PZT-EMAA composites were prepared by melt extrusion followed by hot pressing. The...
article 2014
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van den Ende, D.A. (author), Maier, R.A. (author), van Neer, P.L.M.J. (author), van der Zwaag, S. (author), Randall, C.A. (author), Groen, W.A. (author)
In this work, the piezoelectric properties at high electric fields of dielectrophoretically aligned PZT - polymer composites containing high aspect ratio particles (such as short fibers) are presented. Polarization and strain as a function of electric field are evaluated. The properties of the composites are compared to those of PZT-polymer...
article 2013
document
van den Ende, D.A. (author), Groen, W.A. (author), van der Zwaag, S. (author)
We report on the optimisation of a recently developed high performance 0-3 piezoelectric composite comprising of the piezoelectric Lead Zirconate Titanate (PZT) powder and a liquid crystalline thermosetting matrix polymer (LCT). The matrix polymer is a liquid crystalline polymer comprising of an HBA-HNA backbone with phenylethynyl end-groups....
article 2011
document
van den Ende, D.A. (author), Groen, W.A. (author), van der Zwaag, S. (author), TNO Industrie en Techniek (author)
In this work piezoelectric composite charge based sensors are developed, aimed at quasi-static pressure sensor or switch type applications. The use of piezoelectric composite materials allows for manufacturing robust devices which can easily be integrated with conventional polymer processing. Piezoelectric composites of lead zirconate titanate ...
article 2010
document
van den Ende, D.A. (author), Bory, B.F. (author), Groen, W.A. (author), van der Zwaag, S. (author), TNO Industrie en Techniek (author)
The dielectric and piezoelectric properties of piezoelectric particleepoxy polymer composites structured into 1-3 composites via dielectrophoresis during curing are reported. The dielectrophoretic alignment induces a textured microstructure in the composite, with particles forming chains in the direction of the electric field. The particles form...
conference paper 2010
Searched for: subject%3A%22Piezoelectric%255C%2Bcomposites%22
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