Liquid metal spiral coil enabled soft electromagnetic actuator

被引:76
作者
Guo, Rui [1 ]
Sheng, Lei [2 ]
Gong, HengYi [1 ]
Liu, Jing [1 ,2 ]
机构
[1] Tsinghua Univ, Sch Med, Dept Biomed Engn, Beijing 100084, Peoples R China
[2] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
关键词
liquid metal; soft machine; electromagnetic actuator; magnet; artificial system; ARTIFICIAL MUSCLES; ELASTOMERS; ROBOTS;
D O I
10.1007/s11431-017-9063-2
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Soft robot is a kind of machine form with flexible deformation capability. Making flexible actuators has recently become a hot research topic in the field. In this study, we demonstrated the facile fabrication of a soft electromagnetic actuator using liquid metal coil of Ga-In alloys, and designed several illustrative mechanical devices, such as jellyfish like robot, soft fishtail and flexible manipulator. Measurements of the liquid metal coil's electrical properties confirmed that the liquid metal coil was mechanically stable under 48% uniaxial strains. Furthermore, the resistance of the liquid metal coil is stable under 60A degrees bending deformation. Tests on the liquid metal coil's driving properties confirmed that the liquid metal coil (55 mmx55 mmx1 mm) could reach the maximum displacement amplitude of 21.5 mm with the current of 0.48 A. It was shown that the electromagnetic interaction between the magnet and the liquid metal coil enables the coil as a highly efficient actuator. The mechanisms lying behind were interpreted and future applications of such system were discussed.
引用
收藏
页码:516 / 521
页数:6
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