Coiled Carbon Nanotube Fibers Sheathed by a Reinforced Liquid Crystal Elastomer for Strong and Programmable Artificial Muscles

被引:5
|
作者
Yang, Guang [1 ,2 ]
Dong, Lizhong [2 ]
Ren, Ming [2 ]
Cui, Bo [2 ]
Yuan, Xiaojie [2 ]
Wang, Xiaobo [1 ,2 ]
Li, Yuxin [1 ,2 ]
Li, Wei [2 ]
Qiao, Guanlong [2 ]
Shao, Yunfeng [1 ,2 ]
Li, Weiwei [2 ]
Wang, Xiaona [1 ,2 ]
Xu, Panpan [1 ,2 ]
Fang, Hongbin [3 ]
Di, Jiangtao [1 ,2 ]
Li, Qingwen [1 ,2 ]
机构
[1] Univ Sci & Technol China, Sch Nanotechnol & Nanobion, Hefei 230026, Peoples R China
[2] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Adv Mat Div, Key Lab Multifunct Nanomat & Smart Syst, Suzhou 215123, Peoples R China
[3] Fudan Univ, Inst AI & Robot, Shanghai 200433, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
artificial muscles; liquid crystal elastomers; double network; coiled fibers; origami structure; TOUGH;
D O I
10.1021/acs.nanolett.4c02239
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Fibers of liquid crystal elastomers (LCEs) as promising artificial muscle show ultralarge and reversible contractile strokes. However, the contractile force is limited by the poor mechanical properties of the LCE fibers. Herein, we report high-strength LCE fibers by introducing a secondary network into the single-network LCE. The double-network LCE (DNLCE) shows considerable improvements in tensile strength (313.9%) and maximum actuation stress (342.8%) compared to pristine LCE. To facilitate the controllability and application, a coiled artificial muscle fiber consisting of DNLCE-coated carbon nanotube (CNT) fiber is prepared. When electrothermally driven, the artificial muscle fiber outputs a high actuation performance and programmable actuation. Furthermore, by knitting the artificial muscle fibers into origami structures, an intelligent gripper and crawling inchworm robot have been demonstrated. These demonstrations provide promising application scenarios for advanced intelligent systems in the future.
引用
收藏
页码:9608 / 9616
页数:9
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