Carbon Nanotube Yarn with Small Outer Diameter to Maximize the Electrochemical Performance of Artificial Muscles

作     者：Park, Chae-Lin Goh, Byeonghwa Kim, Eun Sung Choi, Joonmyung Kim, Shi Hyeong 

作者机构：Department of Advanced Textile R&D Korea Institute of Industrial Technology Ansan15588 Korea Republic of HYU-KITECH Joint Department Hanyang University Seoul04763 Korea Republic of Department of Mechanical Design Engineering Hanyang University Seoul04763 Korea Republic of Department of Mechanical Engineering BK21 FOUR ERICA-ACE Center Hanyang University Ansan15588 Korea Republic of R&D Center A-Tech System Co. Incheon21312 Korea Republic of 

出 版 物：《SSRN》 

年 卷 期：2023年

核心收录：

主　　题：Carbon nanotubes 

摘      要：Electrochemically powered carbon nanotube (CNT) artificial muscles have garnered significant attention owing to their chemical stability, low operating voltage, and impressive actuation performance. Notably, twist-based CNT artificial muscles have demonstrated superior actuation performance by controlling macroscopic structural factors such as the diameter, spring index, bias angle, and structural homogeneity of the yarn. However, the microscopic design of CNTs is yet to be reported, although CNTs comprising CNT yarn muscles are key determinants of performance. Here, we first establish a correlation between the diameter of CNTs and the actuation performance of artificial muscles. The structural reason for the higher deformability is elucidated employing molecular dynamics simulations. The obtained computational simulation results were consistent with the experimentally fabricated yarn of small-diameter CNTs, which exhibited higher actuation performance. Our findings provide a fundamental design range of CNT diameters that can significantly enhance the performance of electrochemically powered artificial muscles. © 2023, The Authors. All rights reserved.