Low-cost flexible pressure sensor based on dielectric elastomer film with micro-pores

Bo Yeon Lee, Jiyoon Kim, Hyungjin Kim, Chiwoo Kim, Sin Doo Lee

Research output: Contribution to journalArticlepeer-review

185 Citations (Scopus)

Abstract

We developed a low-cost flexible pressure sensor based on an elastomer film with uniformly distributed micro-pores as a dielectric layer. The dispersion of the micro-pores in the elastomer film results from the phase separation between a prepolymer material and deionized water to the elastomer, followed by the subsequent evaporation of the solvent within the polymer matrix after polymerization. Owing to the enhanced deformability by the pore structures, the relatively high sensitivity of 1.18 kPa-1 in the low pressure (<0.02 kPa) as well as the fast response time of 150 ms was achieved. The sensitivity was found to primarily vary with the porosity of the elastomer film. Due to the highly elastic and flexible features of the porous film fabricated in a simple way, our pressure sensor is applicable for advanced touch panels with more human-friendly interfaces and skin sensors that allow the detection of a small change in pressure.

Original languageEnglish
Pages (from-to)103-109
Number of pages7
JournalSensors and Actuators, A: Physical
Volume240
DOIs
Publication statusPublished - 2016 Apr 1

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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