Leveraging Inter-Bundle Anchoring Effect to Induce Static and Dynamic Twist-Stability in Multifunctional Carbon Nanotube Coiled Yarn Hydro-Actuators

被引：0

作者：

Lee, Jae Myeong ^{[1
]}

Jeon, Gichan ^{[2
,3
,4
]}

Son, Wonkyeong ^{[1
]}

Chun, Sungwoo ^{[5
]}

Han, Duri ^{[1
]}

Gwac, Hocheol ^{[1
]}

Kim, Jae Won ^{[6
]}

Sim, Hyeon Jun ^{[7
]}

Kim, Young-Kwan ^{[6
]}

Park, Ji Eun ^{[8
]}

Park, Jungjin ^{[2
]}

Sung, Yung-Eun ^{[3
,4
]}

Kim, Seon Jeong ^{[1
]}

Choi, Changsoon ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect Engn & Biomed Engn, Seoul 04763, South Korea

[2] Korea Inst Sci & Technol KIST, Energy Storage Res Ctr, Seoul 02792, South Korea

[3] Inst Basic Sci IBS, Ctr Nanoparticle Res, Seoul 08826, South Korea

[4] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 08826, South Korea

[5] Korea Univ, Dept Elect & Informat Engn, Sejong 30019, South Korea

[6] Dongguk Univ Seoul, Dept Chem, 30 Pildong Ro, Seoul 04620, South Korea

[7] Konkuk Univ, Dept Biomed Engn, Chungju 27478, South Korea

[8] Tech Univ Korea, Grad Sch Knowledge Technol & Energy, Shihung 15703, South Korea

来源：

ADVANCED FUNCTIONAL MATERIALS | 2025年

基金：

新加坡国家研究基金会;

关键词：

CNT coiled yarn; hydro-actuator; inter-bundle anchor; multifunctionality; twist-stability; MUSCLES; FIBERS; SOLVENTS;

D O I：

10.1002/adfm.202412397

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Carbon nanotube (CNT) coiled yarns have revolutionized 1D yarn actuators. However, their intrinsic twist-instability poses significant challenges, limiting their practical applicability. In this study, static and dynamic twist-stability are imparted to CNT coiled-yarn hydro-actuators by leveraging the inter-bundle anchoring effect. An inter-bundle anchor (IBA) is embedded within the coiled yarn by continuously twisting CNT sheets coated with a polymer agent. This integration enhances the inter-bundle connectivity within the yarns, ensuring twist retention of 97.5% in static mode. In dynamic mode, the IBA functions as an internal return spring, providing high actuation reversibility with torsional elasticity above 0.8 across repeated cycles. Furthermore, electrothermal recovery via Joule heating improves the actuation frequency to 0.039 Hz, and the pseudocapacitive properties of the polymer agent enable energy storage with an areal capacitance of 79.0 mF cm(-2). These advancements underscore the potential of CNT-coiled yarn hydro-actuators for use in humidity monitoring, adaptive electronics, and various wearable and implantable applications.

引用

页数：15