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- W2018609407 abstract "A computational model of transport and electromechanical transduction is developed for ionomeric polymer transducers. The transport model is based upon a coupled chemo-electrical multi-field formulation and computes the spatio-temporal charge density profile to an applied potential at the boundaries. The current induced in the polymer is computed using the isothermal transient ionic current associated with surface charge accumulation at the electrodes induced by non-zero charge density within the polymer. The bending moment induced in the polymer is assumed to be a summation of linear and quadratic functions of the charge density. Euler-Bernoulli beam mechanics are used to compute the bending deflection of the transducer to an applied potential. Comparisons with experimental data demonstrate that this model accurately predicts the transition in the electrical current response from primarily capacitive at low frequencies to primarily resistive at high frequencies. Furthermore, the model exhibits good qualitative agreement with measured strain response of the transducer as a function of frequency. The electromechanical coupling model accurately reflects the nonlinear behavior of the material at low-frequency excitation and the relative decrease in the nonlinear response as the excitation frequency is increased. These phenomena are directly related to the asymmetric charge density distribution that develops in the polymer due to anion immobility." @default.
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- W2018609407 date "2005-05-06" @default.
- W2018609407 modified "2023-09-27" @default.
- W2018609407 title "Computational models of ionic transport and electromechanical transduction in ionomeric polymer transducers (Invited Paper)" @default.
- W2018609407 doi "https://doi.org/10.1117/12.599539" @default.
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