Sensor response of polypyrrole trilayer benders as a function of geometry

Stephen John; Gursel Alici; Geoffrey Spinks; John D. W. Madden; Gordon G. Wallace

doi:10.1117/12.776171

10 April 2008 Sensor response of polypyrrole trilayer benders as a function of geometry

Stephen John, Gursel Alici, Geoffrey Spinks, John D. W. Madden, Gordon G. Wallace

Proceedings Volume 6927, Electroactive Polymer Actuators and Devices (EAPAD) 2008; 692721 (2008) https://doi.org/10.1117/12.776171
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

Trilayer polypyrrole benders are capable of generating voltages and currents when applied with an external force or displacement, demonstrating potential as mechanical sensors. Previous work has identified the effects of dopant and electrolyte on the sensor output, and a 'deformation induced ion flux' model was proposed. The current work aims to identify the change in sensor response with input amplitude and bender geometry as a function of frequency. The current and charge output from the trilayer benders were found to increase proportionally with input displacement and bender strain for multiple input frequencies, indicating linearity. Sensitivities of the current and charge output have also been calculated in response to strain, and are found to increase as the volume of the conducting polymer is increased. Some guidelines for sensor geometry are then suggested, using the identified sensitivities as a guide.

Citation Download Citation

Stephen John, Gursel Alici, Geoffrey Spinks, John D. W. Madden, and Gordon G. Wallace "Sensor response of polypyrrole trilayer benders as a function of geometry", Proc. SPIE 6927, Electroactive Polymer Actuators and Devices (EAPAD) 2008, 692721 (10 April 2008); https://doi.org/10.1117/12.776171

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