Large‐Stroke Electrochemical Carbon Nanotube/Graphene Hybrid Yarn Muscles
Abstract
Artificial muscles are reported in which reduced graphene oxide (rGO) is trapped in the helical corridors of a carbon nanotube (CNT) yarn. When electrochemically driven in aqueous electrolytes, these coiled CNT/rGO yarn muscles can contract by 8.1%, which is over six times that of the previous results for CNT yarn muscles driven in an inorganic electrolyte (1.3%). They can contract to provide a final stress of over 14 MPa, which is about 40 times that of natural muscles. The hybrid yarn muscle shows a unique catch state, in which 95% of the contraction is retained for 1000 s following charging and subsequent disconnection from the power supply. Hence, they are unlike thermal muscles and natural muscles, which need to consume energy to maintain contraction. Additionally, these muscles can be reversibly cycled while lifting heavy loads.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 28, 2018
- Source ID
- 10.1002/smll.201801883
Entities
People
- Jian Qiao
- Jiangtao Di
- Kaiyun Jin
- Min Li
- Na Li
- Qingwen Li
- Ray H. Baughman
- Sha Zeng
- Shaoli Fang
- Susheng Zhou
- Yanhui Song
Organizations
- Air Force Office of Scientific Research
- Beihang University
- Chinese Academy of Sciences
- National Natural Science Foundation of China
- Robert A. Welch Foundation
- University of Texas at Dallas