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Poling piezoelectric (K,Na,Li)NbO3-polydimethylsiloxane composites

Journal Article (2017)
Author(s)

Daniella Bayle Deutz (TU Delft - Novel Aerospace Materials)

Neola T. Mascarenhas (TU Delft - Novel Aerospace Materials)

Sybrand Van Der Zwaag (TU Delft - Novel Aerospace Materials)

W.A. Groen (TU Delft - Novel Aerospace Materials, TNO)

Research Group
Novel Aerospace Materials
Copyright
© 2017 D.B. Deutz, N.T. Mascarenhas, S. van der Zwaag, W.A. Groen
DOI related publication
https://doi.org/10.1080/00150193.2017.1360110
More Info
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Publication Year
2017
Language
English
Copyright
© 2017 D.B. Deutz, N.T. Mascarenhas, S. van der Zwaag, W.A. Groen
Research Group
Novel Aerospace Materials
Issue number
1
Volume number
515
Pages (from-to)
68-74
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Abstract

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 effective poling conditions for dielectrophoretically structured KNLN-PDMS composites are studied, and compared with random composites. Effective poling is identified at 7.5 kV/mm, for 6 min at 150°C in structured composites. The structured composites demonstrate improved piezoelectric performance, with respect to random composites, while retaining the low stiffness of the PDMS polymer matrix.