Modeling actuation of ionic polymer metal composites from the initial transient to back-relaxation

Maurizio Porfiri, Hesam Sharghi, Peng Zhang

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


Ionic polymer metal composites (IPMCs) have been the object of intensive research in the last two decades. IPMC actuators promise to find application in medical and industrial settings, where large deformations and low operating voltages are of critical importance. Here, we present a detailed mathematical analysis of IPMC actuation to illuminate the role of counterion size and ionomer-metal composite layers on transient response and back-relaxation. We build on previous work by our group on thermodynamically-consistent modeling of IPMC mechanics and electrochemistry to afford important insight into the physics of actuation across different spatial and temporal scales.

Original languageEnglish (US)
Title of host publicationElectroactive Polymer Actuators and Devices (EAPAD) XX
EditorsYoseph Bar-Cohen
ISBN (Electronic)9781510616844
StatePublished - 2018
EventElectroactive Polymer Actuators and Devices (EAPAD) XX 2018 - Denver, United States
Duration: Mar 5 2018Mar 8 2018

Publication series

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


OtherElectroactive Polymer Actuators and Devices (EAPAD) XX 2018
Country/TerritoryUnited States


  • Back-relaxation
  • Composite layer
  • Ionic polymer metal composite
  • Poisson-Nernst-Planck
  • Steric effect

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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