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Poster communications

Bidirectional model for ultrathin pedot-based trilayer transducers

Tan Ngoc Nguyen Eric Cattan 1, 2 John D.W. Madden Sébastien Grondel 1, 2 
2 MAMINA - IEMN - Matériaux et Acoustiques pour MIcro et NAno systèmes intégrés - IEMN
IEMN-DOAE - Institut d’Électronique, de Microélectronique et de Nanotechnologie - Département Opto-Acousto-Électronique - UMR 8520
Abstract : PEDOT-based trilayer ionic polymer exhibits bidirectional electromechanical coupling. For such a material system, application of 2 V produces a strain of 1-2 % and millimeter displacements, while a few millivolts are produced when such a millimeter level displacement is applied. To simulate such a behaviour, this study presents a bidirectional sensing and actuation model for the ultrathin PEDOT-based trilayer transducers. The model consists of three elements: an electrochemical part described by a simple RC circuit, a mechanical part represented using dynamic Euler - Bernoulli beam theory, and an empirical strain-to-charge ratio coupling charge to strain in actuation and applied stress to voltage in sensing. A self-consistent Bond Graph language is used to give a clear physical and power interpretation of the mechanisms. To confirm the prediction ability of the resulting model, a 17 micrometers thick trilayer transducer is fabricated using a stacking layer method, and a complete dimensional, electrical, electro-chemical and mechanical characterization is performed. Good agreement is obtained between the temporal and frequency simulations and experiments in both sensing and actuation, showing that the modeling approach advances the understanding of the operation principles of the studied transducer devices.
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Submitted on : Monday, February 28, 2022 - 9:24:35 AM
Last modification on : Wednesday, March 23, 2022 - 3:51:35 PM


  • HAL Id : hal-03590659, version 1


Tan Ngoc Nguyen, Eric Cattan, John D.W. Madden, Sébastien Grondel. Bidirectional model for ultrathin pedot-based trilayer transducers. 9th International Conference on Electromechanically Active Polymer Transducers & Artificial Muscles, EuroEAP 2019, Jun 2019, Dresden, Germany. ⟨hal-03590659⟩



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