Unipolar stroke, electroosmotic pump carbon nanotube yarn muscles
- Title
- Unipolar stroke, electroosmotic pump carbon nanotube yarn muscles
- Author
- 김선정
- Issue Date
- 2021-01
- Publisher
- AMER ASSOC ADVANCEMENT SCIENCE
- Citation
- SCIENCE, v. 371, no. 6528, page. 494
- Abstract
- Success in making artificial muscles that are faster and more powerful and that provide larger strokes would expand their applications. Electrochemical carbon nanotube yarn muscles are of special interest because of their relatively high energy conversion efficiencies. However, they are bipolar, meaning that they do not monotonically expand or contract over the available potential range. This limits muscle stroke and work capacity. Here, we describe unipolar stroke carbon nanotube yarn muscles in which muscle stroke changes between extreme potentials are additive and muscle stroke substantially increases with increasing potential scan rate. The normal decrease in stroke with increasing scan rate is overwhelmed by a notable increase in effective ion size. Enhanced muscle strokes, contractile work-per-cycle, contractile power densities, and energy conversion efficiencies are obtained for unipolar muscles.
- URI
- https://www.science.org/doi/10.1126/science.abc4538https://repository.hanyang.ac.kr/handle/20.500.11754/175370
- ISSN
- 0036-8075; 1095-9203
- DOI
- 10.1126/science.abc4538
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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