人工肌肉
材料科学
陶瓷
模数
复合材料
极限抗拉强度
执行机构
扭转(腹足类)
制作
剪切模量
氧化物
计算机科学
冶金
解剖
医学
替代医学
病理
人工智能
作者
Jianhua Yan,Jieyan Wu,Chuang Zhu,Yongshi Guo,Jiangtao Di,Xiaohua Zhang,Liying Wei,Xuwang Tian,Kun Fu
出处
期刊:Research Square - Research Square
日期:2023-09-18
标识
DOI:10.21203/rs.3.rs-3272618/v1
摘要
Abstract Artificial muscles are soft actuators used to mimic human muscle movements, but using oxide ceramics to fabricate high-modulus artificial muscles is a challenge since they are prone to fracture during homochiral torsion. Here, we report a strategy of ceramic metallization to solve the problem of low-shear and low-stretchability of ceramics and fabricate homochiral coiled alumina yarn artificial muscles with a solenoid structure. The alumina muscle can carry objects of 0.28 million times its own weight and provide a high actuation stress of 483.5 MPa while maintaining a large tensile stroke of 13.5%. In addition, it shows a contraction power 18 times and an energy density 240 times of human muscles, as well as a high energy conversion efficiency of 7.59% under an electric drive mode, which far exceed most reported polymer and carbon muscles. This work realizes large-scale fabrication of high-modulus ceramic muscles.
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