Tethering of twisted-fiber artificial muscles

Leng, Xueqi; Mei, Guangkai; Zhang, Guanghao; Liu, Zunfeng; Zhou, Xiang

doi:10.1039/d2cs00489e

Cited by 28 publications

(15 citation statements)

References 162 publications

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“…[30,31] For consideration factors of yarns, twisting, shear force, and Poisson's ratio are instigated. [32,33] The mechanical properties of yarns are significantly affected by twisting because of the spiral angle. [34] Poisson's ratio has a great influence on physical characteristics of yarns such as density and porosity.…”

Section: General Design Principles Of Yarnsmentioning

confidence: 99%

Recent Progress on Yarn‐Based Electronics: From Material and Device Design to Multifunctional Applications

Jiao

Guo

et al. 2023

Adv Elect Materials

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Over the last decade, the rapid development of wearable electronics has generated renewed interest in textiles. The integration of advanced nanotechnology and microelectronics with well‐established textile production processes has resulted in textile electronics, that are lightweight, flexible, breathable, and conformable, which broadens the applications of electronic products. The hierarchical textile structure, ranging from a single fiber to twisted yarns and various fabrics, is suitable for constructing multifunctional flexible devices. In particular, yarn, which bridges between fiber and fabric, is advantageous owing to its easy integration into wearable formats via weaving, knitting, or braiding. However, because of the dearth of effective interdisciplinary communication between researchers of electronic and textile engineering, fabricating yarn‐based devices with superior mechanical properties and versatile electronic functionality is difficult. Therefore, this review provides an overview of yarn‐based electronics, followed by a systematical summary of recent progress in yarns with respect to material and device design, multifunctional integration, and applications in wearable devices, including sensors, actuators, stealth, batteries, and nanogenerators. Furthermore, the major challenges and future developments in this field are discussed.

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Section: General Design Principles Of Yarnsmentioning

confidence: 99%

Recent Progress on Yarn‐Based Electronics: From Material and Device Design to Multifunctional Applications

Jiao

Guo

et al. 2023

Adv Elect Materials

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“…Owing to its ordered structure and irregular area of spidroins, spider silk exhibits strong strength and toughness and performs even better than silk, rubber, nylon, steel, Kelvar, and other materials. Spider silk provides tremendous promise for the prototype for future material design, being applied in a variety of industries including biomedicine, [ 92 ] smart wearable technologies, [ 93‐97 ] parachutes, aerospace materials, artificial muscles, [ 98‐107 ] sensors [ 22,104,108‐111 ] and aerospace. [ 136‐139,142‐143 ]…”

Section: Application Prospectmentioning

confidence: 99%

Research Progress on Spider‐Inspired Tough Fibers^†

et al. 2023

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Comprehensive SummarySpider silk has attracted increasing attention due to its fascinating combination of ultra‐high tenacity high strength, and excellent elasticity. Based on the fundamental biological studies on spider silk, significant research efforts have been devoted to biotechnology and chemical synthesis to mimic or even exceed the properties of natural spider silk fibers. Moreover, the natural spider silk fiber has been simulated with the burgeoning development of numerous spinning technologies, including wet spinning, dry spinning, electrostatic spinning, and microfluidic spinning, which continuously help to optimize the properties of synthetic spider silk. The unique characteristics of natural spider silk include high refraction transmission, heat resistance, antimicrobial properties, biocompatibility, and super shrinking. Biconical recreation of spider silk with special features and extraordinary capabilities demonstrates potential applications in biomedicine, smart wearables, artificial muscles and sensors, aerospace and other domains.This article is protected by copyright. All rights reserved.

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“…One way to make untethered artificial muscles requires thermal fixing of the polymer fiber into a twisted/coiled shape by annealing at elevated temperatures fixing the shape, and thus avoiding twist release. [ 21–24 ] When heated, the polymer muscles reversibly contract and untwist since the highly oriented polymer fibers exhibit thermally induced anisotropic expansion. While highlighting the versatility of the rotating fiber actuators as artificial muscles, the attainable level of contraction and torque is generally low, and neither recycling nor reprogramming has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Melt‐Extruded Thermoplastic Liquid Crystal Elastomer Rotating Fiber Actuators

Lugger

Engels

Cardinaels

et al. 2023

Adv Funct Materials

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Untethered soft fiber actuators are advancing toward next‐generation artificial muscles, with rotating polymer fibers allowing controlled rotational deformations and contractions accompanied by torque and longitudinal forces. Current approaches, however, are based either on non‐recyclable and non‐reprogrammable thermosets, exhibit rotational deformations and torques with inadequate actuation performance, or involve intricate multistep processing and photopolymerization impeding scalable fabrication and manufacturing of millimeter‐thick fibers. Here, the melt‐extrusion and drawing of a 50 m long thermoplastic liquid crystal elastomer fiber with a ≈1.3 mm diameter on a large scale is reported. With the responsive thermoplastic material, rotating actuators are fabricated via easily exploited programming freedom resulting in large, reversible rotational deformations and torques. The actuation performance of the twisted fibers may be controlled by the programmed twisting density without complicated preparation steps or photocuring being required. The thermoplastic behavior enables fabrication of plied fibers, demonstrated as a triple helical twisted rope constructed from individual rotating fibers delivering up to three times as great rotational and longitudinal forces capable of reversibly opening and lifting a screw cap vial. Besides the programmability, the thermoplastic material employed lends itself to be completely reprocessed into other configurations with self‐healing properties in contrast to thermosets.

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Tethering of twisted-fiber artificial muscles

Abstract: This review summarizes the recent progress in twisted-fiber artificial muscles with different methods for preserving the torque and the inserted twist, and explores the relevant applications.

Cited by 28 publications

References 162 publications

Recent Progress on Yarn‐Based Electronics: From Material and Device Design to Multifunctional Applications

Recent Progress on Yarn‐Based Electronics: From Material and Device Design to Multifunctional Applications

Research Progress on Spider‐Inspired Tough Fibers^†

Melt‐Extruded Thermoplastic Liquid Crystal Elastomer Rotating Fiber Actuators

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Tethering of twisted-fiber artificial muscles

Abstract: This review summarizes the recent progress in twisted-fiber artificial muscles with different methods for preserving the torque and the inserted twist, and explores the relevant applications.

Cited by 28 publications

References 162 publications

Recent Progress on Yarn‐Based Electronics: From Material and Device Design to Multifunctional Applications

Recent Progress on Yarn‐Based Electronics: From Material and Device Design to Multifunctional Applications

Research Progress on Spider‐Inspired Tough Fibers†

Melt‐Extruded Thermoplastic Liquid Crystal Elastomer Rotating Fiber Actuators

Contact Info

Product

Resources

About

Research Progress on Spider‐Inspired Tough Fibers^†