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Large displacement fast conducting polymer actuators

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dc.contributor.advisor Ian W. Hunter. en_US Chen, Angela Y. (Angela Ying-Ju), 1982- en_US
dc.contributor.other Massachusetts Institute of Technology. Dept. of Mechanical Engineering. en_US 2007-01-10T16:57:51Z 2007-01-10T16:57:51Z 2006 en_US 2006 en_US
dc.description Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006. en_US
dc.description Includes bibliographical references (leaves 93-96). en_US
dc.description.abstract Conducting polymers are a promising class of electroactive materials that undergo volumetric changes under applied potentials, which make them particularly useful for many actuation applications. Polypyrrole , is one of the most common conducting polymers of choice for the development of actuator technologies and has been well characterized in its mechanical, electrical, and electrochemical response. Although capable of producing almost 10 times more active stress for a given cross-sectional area than skeletal muscle, strains are relatively low on the order of 1 to 2 %, as are strain rates, which are on the order of a couple percent per second. Small strains can be amplified to produce large bending displacements by configuring the conducting polymer film in a trilayer configuration with two conducting polymer films sandwiching an electrolyte gel layer. This thesis focuses on the development of conducting polymer bending actuators in air. There is a strong correlation found between applied voltage, temperature, and the speed of actuation. Several experiments were carried out to determine the effect of temperature on the mechanical, electrical, and electrochemical properties of the components of the trilayer. en_US
dc.description.abstract (cont.) This data coupled with thermal profiles of trilayers during actuation, electrochemical profiles, and force generation plots of the trilayers shed light on how these bending actuators can be optimized and integrated into different applications such as propulsion mechanisms for autonomous underwater vehicles. en_US
dc.description.statementofresponsibility by Angela Ying Ju Chen. en_US
dc.format.extent 96 leaves en_US
dc.format.extent 4543697 bytes
dc.format.extent 4547707 bytes
dc.format.mimetype application/pdf
dc.format.mimetype application/pdf
dc.language.iso eng en_US
dc.publisher Massachusetts Institute of Technology en_US
dc.rights M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. en_US
dc.subject Mechanical Engineering. en_US
dc.title Large displacement fast conducting polymer actuators en_US
dc.type Thesis en_US S.M. en_US
dc.contributor.department Massachusetts Institute of Technology. Dept. of Mechanical Engineering. en_US
dc.identifier.oclc 76765856 en_US

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