基于磁诱导微柱阵列可无线充电的超灵敏柔性传感器

Translated title of the contribution: Magnetically induced micropillar arrays for an ultrasensitive flexible sensor with a wireless recharging system

Libo Gao*, Ying Han, James Utama Surjadi, Ke Cao, Wenzhao Zhou, Hongcheng Xu, Xinkang Hu, Mingzhi Wang, Kangqi Fan, Yuejiao Wang, Weidong Wang, Horacio D. Espinosa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Significant efforts have been devoted to enhancing the sensitivity and working range of flexible pressure sensors to improve the precise measurement of subtle variations in pressure over a wide detection spectrum. However, achieving sensitivities exceeding 1000 kPa−1 while maintaining a pressure working range over 100 kPa is still challenging because of the limited intrinsic properties of soft matrix materials. Here, we report a magnetic field-induced porous elastomer with micropillar arrays (MPAs) as sensing materials and a well-patterned nickel fabric as an electrode. The developed sensor exhibits an ultrahigh sensitivity of 10,268 kPa−1 (0.6–170 kPa) with a minimum detection pressure of 0.25 Pa and a fast response time of 3 ms because of the unique structure of the MPAs and the textured morphology of the electrode. The porous elastomer provides an extended working range of up to 500 kPa with long-time durability. The sophisticated sensor system coupled with an integrated wireless recharging system comprising a flexible supercapacitor and inductive coils for transmission achieves excellent performance. Thus, a diverse range of practical applications requiring a low-to-high pressure range sensing can be developed. Our strategy, which combines a microstructured high-performance sensor device with a wireless recharging system, provides a basis for creating next-generation flexible electronics. [Figure not available: see fulltext.]

Translated title of the contributionMagnetically induced micropillar arrays for an ultrasensitive flexible sensor with a wireless recharging system
Original languageChinese (Traditional)
Pages (from-to)1977-1988
Number of pages12
JournalScience China Materials
Volume64
Issue number8
DOIs
StateAccepted/In press - 2021

Keywords

  • flexible electronics
  • high sensitivity
  • pressure sensor
  • supercapacitor
  • wireless recharging

ASJC Scopus subject areas

  • Materials Science(all)

Fingerprint

Dive into the research topics of 'Magnetically induced micropillar arrays for an ultrasensitive flexible sensor with a wireless recharging system'. Together they form a unique fingerprint.

Cite this