Abstract

Wearable sensors, capable of detecting various motions of the human body, present unique opportunities for the development of advanced electronic interfaces. Such sensors have widespread applications in robotics, medicine, and electronic gaming. Capacitive sensors have numerous advantages. They are physically robust, can be constructed from a variety of materials in different shapes and sizes, and have the potential of be manufactured at low cost. Here, we present two a capacitive strain gauges based on a novel silver-polymer composite material. The first sensor utilized an interdigitated finger pattern, which changed capacitance during tensile strain. The silver-polymer composite was used as the conductive filler material while the commercially available silicone elastomer Ecoflex® served as both the dielectric material and substrate. The silver-polymer composite was prepared by dispersing silver flakes into a mixture of polyvinyl alcohol, poly(3,4-ethyl-ene-dioxythiophene) (PEDOT): Poly(styrene sulfonic acid) (PSS), and phosphoric acid. The second sensor utilized a parallel plate capacitor configuration with the silver-polymer composite serving as the conducting plates and urethane adhesive (Ure-Bond®) as the dielectric material. Mechanical and electrical performance of both sensors, along with fabrication techniques, will be discussed.

Original languageEnglish (US)
Title of host publicationProceedings - IEEE 67th Electronic Components and Technology Conference, ECTC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2263-2268
Number of pages6
ISBN (Electronic)9781509043323
DOIs
StatePublished - Aug 1 2017
Event67th IEEE Electronic Components and Technology Conference, ECTC 2017 - Lake Buena Vista, United States
Duration: May 30 2017Jun 2 2017

Other

Other67th IEEE Electronic Components and Technology Conference, ECTC 2017
CountryUnited States
CityLake Buena Vista
Period5/30/176/2/17

Keywords

  • Capacitance
  • Composite
  • Polymer
  • Strain
  • Stretchable

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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