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Conference Paper
Pitch-tuned Coiled Polymer Actuator for Large Contractile Strain under Light-loading
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- Authors
- Jeong Mook Lim, Dongbum Pyo, Sungryul Yun
- Issue Date
- 2018-10
- Citation
- International Conference on Information and Communication Technology Convergence (ICTC) 2018, pp.1152-1154
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- 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-loading, the pitch-tuned CPA can produce a contractile strain far beyond the original CPA with a limited space to contract. Due to the benefit, pitch-tuning for the CPA can open an opportunity to utilize the CPA as an artificial muscle for soft micro-robot.
- KSP Keywords
- Artificial muscles, Geometric structure, Limited space, Micro robot, Nylon-6 fiber, Pre-stretching, Stretching ratio, Thermal treatments, polymer actuator