Chemical Engineering Journal, Год журнала: 2024, Номер 491, С. 152185 - 152185
Опубликована: Май 12, 2024
Язык: Английский
Progress in Polymer Science, Год журнала: 2024, Номер 153, С. 101829 - 101829
Опубликована: Май 10, 2024
Liquid crystal elastomers (LCEs) have long held significant promise as materials for artificial muscles and smart actuators. Recent advancements in this field introduced innovative LCE structures at various scales, resulting novel properties functionalities that further accentuate their actuation advantages, bolstering potential future soft systems. The ongoing pursuit of enhanced performance functionality actuators, essential advancing them towards superior material-based machines devices, is intricately linked to the understanding fundamental structure-property-function relationships. This review provides a perspective on these relationships across multiple structural levels, encompassing chemical structures, mesophase micro-to-macroscale programmed structures. It delves into impact key actuation-related properties, features, functionalities. aspires provide valuable insights design high-performance development exceptional modes behaviors, expansion achievable functionality.
Язык: Английский
Процитировано
20
Advanced Science, Год журнала: 2024, Номер 11(17)
Опубликована: Фев. 28, 2024
In nature, spider web is an interwoven network with high stability and elasticity from silk threads secreted by spider. Inspired the structure of webs, light-driven liquid crystal elastomer (LCE) active yarn designed super-contractile robust weavability. Herein, a novel biomimetic gold nanorods (AuNRs) @LCE soft actuator hierarchical fabricated facile electrospinning subsequent photocrosslinking strategies. Meanwhile, inherent mechanism actuation performances as-prepared interleaving are systematically analyzed. Results demonstrate that thanks to unique "like-spider webs" between fibers, molecular orientation within LCE microfibers good flexibility, they can generate super strain (≈81%) stable performances. Importantly, benefit covalent bonding at organic-inorganic interface, photopolymerizable AuNRs molecules uniformly introduced into polymer backbone electrospun achieve tailorable shape-morphing under different light intensity stimulation. As proof-of-concept illustration, artificial muscles, micro swimmers, hemostatic bandages successfully constructed. The research disclosed herein offer new insights continuous production development LCE-derived paramount significance for many applications smart fabrics flexible wearable devices.
Язык: Английский
Процитировано
19
Advanced Fiber Materials, Год журнала: 2024, Номер 6(3), С. 622 - 657
Опубликована: Март 22, 2024
Abstract Smart wearables equipped with integrated flexible actuators possess the ability to autonomously respond and adapt changes in environment. Fibrous textiles have been recognised as promising platforms for integrating owing their superior body compliance, lightweight nature, programmable architectures. Various studies related textile smart recently reported. However, review focusing on advanced design of these actuator technologies is lacking. Herein, a timely thorough progress achieved this field over past five years presented. This focuses concepts wearables, covering functional materials, innovative architecture configurations, external stimuli, applications wearables. The primary aspects focus actuating formation techniques architecture, behaviour performance metrics actuators, various challenges next-generation Ultimately, conclusive perspectives are highlighted. Graphical
Язык: Английский
Процитировано
19
Small, Год журнала: 2024, Номер 20(24)
Опубликована: Янв. 4, 2024
Abstract Soft actuators inspired by the movement of organisms have attracted extensive attention in fields soft robotics, electronic skin, artificial intelligence, and healthcare due to their excellent adaptability operational safety. Liquid crystal elastomer fiber (LCEFAs) are considered as one most promising since they can provide reversible linear motion easily integrated or woven into complex structures perform pre‐programmed movements such stretching, rotating, bending, expanding. The research on LCEFAs mainly focuses controllable preparation, structural design, functional applications. This review, for first time, provides a comprehensive systematic review recent advances this important field focusing thermal response LCEFAs. First, driving mechanism, direct indirect heating strategies systematically summarized analyzed. Then, fabrication methods applications discussed. Finally, challenges technical difficulties that may hinder performance improvement large‐scale production proposed, development opportunities prospected.
Язык: Английский
Процитировано
16
Science Advances, Год журнала: 2025, Номер 11(2)
Опубликована: Янв. 8, 2025
Actuation is normally dramatically enhanced by introducing so much yarn fiber twist that the becomes fully coiled. In contrast, we found usefully high muscle strokes and contractile work capacities can be obtained for non-twisted MXene (Ti 3 C 2 T x ) fibers comprising nanosheets are stacked in direction. The artificial muscles called MFAMs. We MFAMs have modulus both radial axial directions spinning a solution containing dispersed an aqueous cellulose solution. observed highly reversible contraction of 21.0% temperature increase from 25° to 125°C. tensile actuation mainly results hydrogen bond orientation change during heating, which decreases intra-sheet spacing. exhibited fast, stable multiple temperature-generating stimuli, increases their applications smart textiles, robotic arms, grippers.
Язык: Английский
Процитировано
3
Science Advances, Год журнала: 2025, Номер 11(3)
Опубликована: Янв. 17, 2025
The development of fibrous actuators with diverse actuation modes is expected to accelerate progress in active textiles, robotics, wearable electronics, and haptics. Despite the advances responsive polymer-based actuating fibers, available are limited by exclusive reliance current technologies on thermotropic contraction along fiber axis. To address this gap, present study describes a reversible spontaneous elongation (~30%) liquid crystal elastomer fibers produced via ultraviolet-assisted melt spinning. This arises from orthogonal alignment smectogenic mesogens relative axis, which contrasts parallel typically observed nematic achieved through mesophase control during extrusion. exhibiting enable textiles increase pore size response temperature increase. integration contracting elongating within single textile enables spatially distinct actuation, paving way for innovations smart clothing fiber/textile actuators.
Язык: Английский
Процитировано
2
International Journal of Mechanical Sciences, Год журнала: 2023, Номер 266, С. 108911 - 108911
Опубликована: Дек. 16, 2023
Язык: Английский
Процитировано
39
Advanced Materials, Год журнала: 2024, Номер 36(19)
Опубликована: Янв. 30, 2024
Soft actuators (SAs) are devices which can interact with delicate objects in a manner not achievable traditional robotics. While it is possible to design SA whose actuation triggered via an external stimulus, the use of single stimulus creates challenges spatial and temporal control actuation. Herein, 4D printed multimaterial soft actuator (MMSA) only initiated by combination triggers (i.e., pH temperature) presented. Using 3D printing, multilayered hydrophilic pH-sensitive layer, hydrophobic magnetic temperature-responsive shape-memory polymer designed. The hydrogel responds environmental conditions swelling or shrinking, while resist shape deformation until temperature light. these stimuli-responsive layers allows for high level spatiotemporal utility MMSA demonstrated series cargo capture release experiments, validating its ability demonstrate active control. concept provides promising research direction develop multifunctional potential applications biomedical engineering engineering.
Язык: Английский
Процитировано
15
Advanced Functional Materials, Год журнала: 2024, Номер 34(29)
Опубликована: Март 7, 2024
Abstract Inspired by natural organisms, soft actuators can convert environmental stimuli into mechanical deformation, making them indispensable for applications in a variety of fields such as robotics. MXene, displaying exceptional attributes conductivity, thermal efficiency, good dispersibility etc., has emerged preferred material high‐performance actuators. However, single struggle to achieve complex tasks realized intelligent robotic systems. Herein, bioinspired dynamic matrix is presented utilizing the developable structure MXene‐cellulose nanofibers (CNF) The inclusion CNF considerably bolsters properties MXene. MXene‐CNF film possessed higher working strain range (≈14%) than pure MXene (≈2%). designed structures complete actuating movements. sensing layer integration with led an extremely low touch detection limit (0.3 kPa) and expedited actuating‐feedback due interaction between contact charging electrostatic induction. A responsive containing 3 × actuators, completed close‐looped sensing‐feedback function, developed similar behavior mimosa plant. This mimosa‐inspired capable identifying source providing immediate feedback. research broadens potential enhancing adaptability intelligence system.
Язык: Английский
Процитировано
15
Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(29), С. 17896 - 17922
Опубликована: Янв. 1, 2024
This article discusses the fundamentals and progress of photothermal actuators, their applications from bionic design to intelligent robots in detail.
Язык: Английский
Процитировано
14