A theoretical framework for the study of compression sensing in ionic polymer metal composites

Valentina Volpini, Lorenzo Bardella, Andrea Rodella, Youngsu Cha, Maurizio Porfiri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Ionic Polymer Metal Composites (IPMCs) are electro-responsive materials for sensing and actuation, consisting of an ion-exchange polymeric membrane with ionized units, plated within noble metal electrodes. In this work, we investigate the sensing response of IPMCs that are subject to a through-the-thickness compression, by specializing the continuum model introduced by Cha and Porfiri,1 to this one-dimensional problem. This model modifies the classical Poisson-Nernst-Plank system governing the electrochemistry in the absence of mechanical effects, by accounting for finite deformations underlying the actuation and sensing processes. With the aim of accurately describing the IPMC dynamic compressive behavior, we introduce a spatial asymmetry in the properties of the membrane, which must be accounted for to trigger a sensing response. Then, we determine an analytical solution by applying the singular perturbation theory, and in particular the method of matched asymptotic expansions. This solution shows a good agreement with experimental findings reported in literature.

Original languageEnglish
Title of host publicationElectroactive Polymer Actuators and Devices (EAPAD) 2017
EditorsYoseph Bar-Cohen
PublisherSPIE
ISBN (Electronic)9781510608115
DOIs
Publication statusPublished - 2017
Externally publishedYes
EventElectroactive Polymer Actuators and Devices (EAPAD) 2017 - Portland, United States
Duration: 2017 Mar 262017 Mar 29

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10163
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceElectroactive Polymer Actuators and Devices (EAPAD) 2017
Country/TerritoryUnited States
CityPortland
Period17/3/2617/3/29

Keywords

  • electrochemistry
  • finite deformations
  • Ionic polymer metal composites
  • matched asymptotic ex-pansions
  • multiphysics
  • sensing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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