The 0-3 Lead Zirconate-Titanate (PZT)/Polyvinyl-Butyral (PVB) Composite for Tactile Sensing

Eun Bee Jo, Yoon A. Lee, Yoon A. Cho, Paul A. Günther, Sylvia E. Gebhardt, Holger Neubert, Hyun Seok Kim

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

In this study, a 0-3 piezoelectric composite based on lead zirconate-titanate (PZT)/polyvinyl-butyral (PVB) was fabricated and characterized for its potential application in tactile sensing. The 0-3 composite was developed to incorporate the advantages of both ceramic and polymer. The paste of 0-3 PZT–PVB composite was printed using a conventional screen-printing technique on alumina and mylar substrates. The thickness of the prepared composite was approximately 80 μm. After printing the top electrode of the silver paste, 10 kV/mm of DC field was applied at 25 °C, 120 °C, and 150 °C for 10 min to align the electric dipoles in the composite. The piezoelectric charge coefficient of (Formula presented.) and the piezoelectric voltage coefficient of (Formula presented.) were improved by increasing the temperature of the poling process. The maximum values of (Formula presented.) and (Formula presented.) were 14.3 pC/N and 44.2 mV·m/N, respectively, at 150 °C. The sensor’s sensitivity to the impact force was measured by a ball drop test. The sensors showed a linear behavior in the output voltage with increasing impact force. The sensitivity of the sensor on the alumina and mylar substrates was 1.368 V/N and 0.815 V/N, respectively. The rising time of the sensor to the finger touch was 43 ms on the alumina substrate and 35 ms on the mylar substrate. Consequently, the high sensitivity and fast response time of the sensor make the 0-3 PZT–PVB composite a good candidate for tactile sensors.

Original languageEnglish
Article number1649
JournalSensors
Volume23
Issue number3
DOIs
StatePublished - Feb 2023

Keywords

  • 0-3 composite
  • lead zirconate-titanate (PZT)
  • polyvinyl-butyral (PVB)
  • screen printing
  • tactile sensor

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