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Poster De Conférence Année : 2021

Strain dynamics under DC voltage of PEDOT:PSS-based microactuators

Lauréline Seurre
  • Fonction : Auteur
Sofiane Ghenna
Héléne Arena
Caroline Soyer
Cedric Plesse
Giao T.M. Nguyen
Frederic Vidal
Eric Cattan


Conducting polymer actuators exhibit large strain in response to an external stimulation, thus representing promise materials for MEMS. Presented as a trilayer structure composed of an ion reservoir membrane sandwiched between two electronically conducting polymers (ECP) as electrodes, the actuator exhibits bending deformation as a result of ions movements between the two electrodes during their redox process. We recently reported on the development of microactuators based on PEDOT:PSS, a commercially available ECP. Although microactuators are very often characterized by applying an AC voltage, many applications require subjecting the actuators to a DC voltage for several seconds or minutes. Some of these applications are the closing of a micro-gripper and the actuation of a cochlear implant during a surgery. With the aim of developing a micro-gripper, the dynamics strain of PEDOT:PSS-based trilayer micro-actuators have been studied by applying DC voltages in order to reach the maximum strain and force. The application of a DC voltage for an extended time shows that the actuator does not go back to its initial position after switching off the power supply. This study reveals the appearance of a memory effect, which is directly related to the intrinsic operation of the ECP-based actuator. These results allow a better understanding of the actuation process and are needful for the modelling and future control of integrated ECP actuators in microsystems devices.
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Dates et versions

hal-03765895 , version 1 (31-08-2022)


  • HAL Id : hal-03765895 , version 1


Lauréline Seurre, Sofiane Ghenna, Héléne Arena, Caroline Soyer, Sébastien Grondel, et al.. Strain dynamics under DC voltage of PEDOT:PSS-based microactuators. EuroEAP 2021 International conference on Electromechanically Active Polymer (EAP) transducers & artificial muscles, Jun 2021, ONLINE, Sweden. ⟨hal-03765895⟩
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