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Non-linear multiphysics modeling of ionic gels

The paper presents a thermodynamically consistent modeling of the non-linear multiphysics of ionic polymer gels based on the multiplicative decomposition of the deformation gradient. In particular, the deformations induced by the motion of ions under an applied voltage are viewed as distortions, similarly to growth-induced deformations in soft tissues. Furthermore, a consistent linearization of the model in the regime of small deformations is discussed. Finally, a finite element implementation of the theory is introduced and validated against experimental results.

Xuanhe Zhao's picture

Symposium on Soft Materials and Structures at 49th SES Meeting (Abstract Deadline: April 2, 2012)

Dear Colleagues,

We would like to to draw your attention to the Symposium on **Soft Materials and Structures** to take place at the upcoming 49th Meeting of the Society of Engineering Sciences (SES) at GeorgiaTech, Atlanta, GA (October 10-12, 2011). More information can be found in the meeting's website:

Bo Li's picture

Dynamic model of ion and water transport in ionic polymer-metal composites

In the process of electro-mechanical transduction of
ionic polymer-metal composites (IPMCs), the transport of ion and water molecule
plays an important role. In this paper, the theoretical transport models of
IPMCs are critically reviewed, with particular emphasis on the recent
developments in the latest decade. The models can be divided into three classes,
thermodynamics of irreversible process model, frictional model and Nernst-Planck
(NP) equation model. To some extent the three models can be transformed into
each other, but their differences are also obvious arising from the various
mechanisms that considered in different models. The transport of ion and water
molecule in IPMCs is compared with that in membrane electrode assembly and

xiao_wang's picture

A Theory of Ionic Polymer Conductor Network Composite

Ionic polymer conductor network composite (IPCNC) is a mixed conductor consisting of a network of loaded ionomer and another network of metallic particles. It is known that the microstructure of the composite, especially that of the electrodes, plays a dominating role in the performance of an IPCNC. However the microstructures of IPCNC have seldom been addressed in theoretical models. This letter formulates a continuum field theory for IPCNC by considering a supercapacitor-like microstructure with a large distributed interface area.

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