Pitch-tuned coiled polymer actuator for large contractile strain under light-loading

  title={Pitch-tuned coiled polymer actuator for large contractile strain under light-loading},
  author={Jeong-Mook Lim and Dongbum Pyo and Sungryul Yun},
  journal={2018 International Conference on Information and Communication Technology Convergence (ICTC)},
We demonstrate a pitch-tuned coiled polymer actuator that can produce a large thermally-induced-contractile-strain under a light-loading. For a pitch-tuning of the coiled polymer actuator (CPA), we sequentially implement a twist-insertion for coiling a nylon-6 fiber, mechanical pre-stretching, and a couple of thermal treatments. By adopting our pitch-tuning methodology, geometric structure of the original CPA can be consistently modulated with a pre-stretching ratio. When heated under a light… CONTINUE READING

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