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

D. B. Deutz, N. T. Mascarenhas, S. van der Zwaag, W. A. Groen

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
21 Downloads (Pure)

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.

Original languageEnglish
Pages (from-to)68-74
Number of pages7
JournalFerroelectrics
Volume515
Issue number1
DOIs
Publication statusPublished - 27 Jul 2017

Keywords

  • dielectrophoresis
  • Piezoelectric composites
  • poling

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