A scalable model for tri-layer conjugated polymer actuator and experimental validation

Conjugated polymers have promising applications as actuators in biomimetic robotics and bio/micromanipulation.

For these applications, it is highly desirable to have predictive models available for feasibility study and design

optimization. In this paper a geometrically-scalable model is presented for trilayer conjugated polymer actuators

based on the diffusive-elastic-metal model. The proposed model characterizes actuation behaviors in terms of

intrinsic material parameters and actuator dimensions. Experiments are conducted on polypyrrole actuators of

different dimensions to validate the developed scaling laws for the quasi-static force and displacement output,

the electrical admittance, and the dynamic displacement response.