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Silver-Nanowires Coated Pitch-Tuned Coiled Polymer Actuator for Large Contractile Strain under Light-Loading
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- Authors
- Dongbum Pyo, Jeong-Mook Lim, Seongcheol Mun, Sungryul Yun
- Issue Date
- 2018-12
- Citation
- International Journal of Precision Engineering and Manufacturing, v.19, no.12, pp.1985-1900
- ISSN
- 2234-7593
- Publisher
- Springer
- Language
- English
- Type
- Journal Article
- Project Code
- 18HS1800, Development of Human Enhancement Technology for auditory and muscle, Shin Hyung Cheol
- Abstract
- We report a pitch-tuned coiled polymer actuator (CPA) with a compliant silver-nanowires (AgNWs) electrode. For a pitch-tuning of the CPA, we sequentially implement a twist-insertion for coiling a nylon-6 fiber, mechanical pre-stretching, and a couple of thermal treatments. When heated under a light-loading, the pitch-tuned CPA can produce a contractile strain far beyond the original one with a limited space to contract. Since the silver-nanowires electrode established on the coiled structure retains a fairly consistent electrical property allowing repetitive Joule-heating under a large uniaxial elongation with loading, the synergetic benefits from pitch-tuning and adopting the AgNWs as a Joule-heating electrode enables the CPA to produce electrically-controllable and large contractile strain under a light-loading that can be utilized for an artificial muscle of soft micro-robot.
- KSP Keywords
- Artificial muscles, Joule Heating, Limited space, Micro robot, Nanowires electrode, Nylon-6 fiber, Pre-stretching, Thermal treatments, electrical properties(I-V curve), polymer actuator, uniaxial elongation