Flexible piezoelectric polymer composites with magnetic-field-oriented BNNS and imprinted micropillars for self-powered sensors

  • Chaojie Xin
  • , Hu Zhao
  • , Xiaoming Chen
  • , Chao Shi
  • , Duo Ma
  • , Qihang Song
  • , Quanyi Zhao
  • , Jie Zhang
  • , Chunhui Wang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Improving the response of sensors is often hindered by inadequate molding effects and complex manufacturing processes. Here, combining a simple magnetic-field-orientation and nano-imprinting process, a micropillar arrayed sensor was successfully fabricated, meanwhile, the boron nitride nanosheets (BNNS) were oriented in the polymer matrix. Due to the strain confinement effect, the outputted voltage of m-BNNS/PDMS composite film (SABNNS) demonstrated an improvement of 115.5% compared to the film sample with randomly dispersed nanoparticles. And the device showed a high sensitivity and rapid response capability to human motion. Furthermore, the oriented arrangement of m-BNNS and the enlarged heat dissipation area of the micropillar array contribute to the optimized thermal conductivity of the device.

Original languageEnglish
Article number20240049
JournalNational Science Open
Volume4
Issue number2
DOIs
StatePublished - 1 Mar 2025

Keywords

  • BNNS
  • magnetic-field-orientation
  • nanoimprint
  • piezoelectric sensor

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