TY - GEN
T1 - A theoretical framework for the study of compression sensing in ionic polymer metal composites
AU - Volpini, Valentina
AU - Bardella, Lorenzo
AU - Rodella, Andrea
AU - Cha, Youngsu
AU - Porfiri, Maurizio
N1 - Funding Information:
This material here reported is based upon work supported by the National Science Foundation under Grant Number OISE-1545857, and by the Italian Ministry of Education, University, and Research (MIUR).
Publisher Copyright:
© 2017 SPIE.
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - Ionic polymer metal composites
KW - electrochemistry
KW - finite deformations
KW - matched asymptotic ex-pansions
KW - multiphysics
KW - sensing
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U2 - 10.1117/12.2257361
DO - 10.1117/12.2257361
M3 - Conference contribution
AN - SCOPUS:85024120657
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Electroactive Polymer Actuators and Devices (EAPAD) 2017
A2 - Bar-Cohen, Yoseph
PB - SPIE
T2 - Electroactive Polymer Actuators and Devices (EAPAD) 2017
Y2 - 26 March 2017 through 29 March 2017
ER -