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首页> 外文期刊>Smart Materials & Structures >The effect of film thickness on polypyrrole actuation assessed using novel non-contact strain measurements
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The effect of film thickness on polypyrrole actuation assessed using novel non-contact strain measurements

机译：使用新型非接触应变测量评估膜厚度对聚吡咯致动的影响

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摘要

Micro-actuators have been developed that exploit the electrochemically induced volume change of the electro-active polymer polypyrrole. The strain regime is inherently complex at a physical level and whilst volume change can be estimated indirectly using, for instance, bending beam theory, such methods become unreliable for large deflections owing to limitations in the mathematical model. A new non-contact measuring technique based on laser micrometry is presented to characterize the time-dependent expansion of electro-active films such as polypyrrole. Measurements have been made which demonstrate that the observed strain is dependent on film thickness. The new measurement technique is straightforward to perform and it is anticipated that it can be used for future materials development and performance assessment, including long-term stability evaluations and operational failure studies of the films.
机译：已经开发出利用电诱导的聚合物聚吡咯的电化学诱导的体积变化的微致动器。应变机制在物理层面上固有地是复杂的，尽管可以使用例如弯曲梁理论间接估算体积变化，但由于数学模型的局限性，这种方法对于大挠度变得不可靠。提出了一种基于激光测微的新型非接触式测量技术，以表征电活性膜（如聚吡咯）的时间依赖性膨胀。已经进行的测量表明观察到的应变取决于薄膜厚度。新的测量技术易于执行，并且有望用于未来的材料开发和性能评估，包括薄膜的长期稳定性评估和操作失效研究。

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