Core–Shell Nanostructured Assemblies Enable Ultrarobust, Notch‐Resistant and Self‐Healing Materials

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 20, 2024

Abstract Actuators based on stimulus‐responsive soft materials have attracted widespread attention due to their significant advantages in flexibility and structural adaptability over traditional rigid actuators. However, the development of fast‐actuating, mechanical robust self‐healing actuators without compromising remains an ongoing challenge. Here, this study presents a photo‐responsive flexible actuator by incorporating core–shell liquid metal nano‐assemblies into polyurethane matrix construct dynamic supramolecular interface. The are endowed with adaptive characteristics external loading, being expected dissipate energy via reversible reconstruction hydrogen bonding deformation nano‐assemblies. obtained composites exhibit excellent strength (31 MPa), low modulus (2.02 high stretchability (1563.95%), autonomous (92.5%), NIR‐responsive actuation properties. Furthermore, combination cohesive but fluxible nano‐liquid core, strong interface not only achieves balance tensile also endows outstanding notch‐resistant performance (fracture energy≈58.8 kJ m −2 ) through multiphase dissipation. This work provides promising strategy for developing yet tough fields robotics artificial muscles.

Language: Английский

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A Review of Recent Manufacturing Technologies for Sustainable Soft Actuators

International Journal of Precision Engineering and Manufacturing-Green Technology, Journal Year: 2023, Volume and Issue: 10(6), P. 1661 - 1710

Published: July 13, 2023

Abstract Soft actuators have brought significant advancements to robotics, allowing robots perform a diverse range of tasks across various domains. However, the increased use soft has resulted in negative environmental impacts, including material consumption, waste generation, and energy consumption. To address these challenges, research is increasingly focused on developing sustainable (SSAs) that can provide high performance while minimizing harm. This review article aims explore development manufacturing SSAs their potential reduce consumption promoting sustainability. The examines categories actuators, such as multi-responsive ones, shape-locking variants, biological water-responsive models, well implementation through multi-material printing and, 3D 4D techniques. also highlights applications SSAs, manufacturing, human–machine interaction, locomotion, manipulation. Furthermore, explores methods for reducing using recycled materials eco-friendly processes circular economy. Finally, study provides comprehensive analysis steer evolution robotics towards more future

Language: Английский

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Strong, healable materials with bio‐like ordered architectures and versatile functionality

SusMat, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 13, 2024

Abstract The capacity of biological tissues to undergo self‐healing is crucial for the performance functions and continuation life. Conventional intrinsic materials demonstrate analogous functionality depending on dissociation‐recombination reversible bonds with no need extra repair agents. However, trade‐off relationship between mechanical strength kinetics in systems, coupled lack additional functionality, restricts their service life practical applications. Diversified highly ordered structures organisms significantly affect energy dissipation mechanism, signal transmission efficiency, molecular network reconstruction capability due multi‐dimensional differentiated macroscopic composite constructions, microscopic orientation textures, topologies/bonding types at level. These architectures exhibit distinctive strengthening mechanisms functionalities, which provide valuable references. This review aims providing current status advanced biomimetic internal micro/nanostructures. Through highlighting specific examples, classifications, design inspirations, fabrication strategies these newly developed based integrating dynamic interactions nano/microstructures are outlined. Furthermore, balance mechanisms, structure–functionalization relationships, potential application values discussed. concludes a perspective challenges, opportunities, prospects development, application, promotion self‐healable bio‐like architectures.

Language: Английский

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Lifecycle Management for Sustainable Plastics: Recent Progress from Synthesis, Processing to Upcycling

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 13, 2024

Abstract Plastics, renowned for their outstanding properties and extensive applications, assume an indispensable irreplaceable role in modern society. However, the ubiquitous consumption of plastic items has led to a growing accumulation waste. Unreasonable practices production, utilization, recycling plastics have substantial energy resource depletion environmental pollution. Herein, state‐of‐the‐art advancements lifecycle management are timely reviewed. Unlike typical reviews focused on recycling, this work presents in‐depth analysis entire plastics, covering whole process from synthesis, processing, ultimate disposal. The primary emphasis lies selecting judicious strategies methodologies at each stage mitigate adverse impact waste plastics. Specifically, article delineates rationale, methods, realized various stages through both physical chemical pathways. focal point is attainment optimal rates thereby alleviating ecological burden By scrutinizing aims furnish comprehensive solutions reducing pollution fostering sustainability across all facets

Language: Английский

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Design and mechanism of photothermal soft actuators and their applications

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(29), P. 17896 - 17922

Published: Jan. 1, 2024

This article discusses the fundamentals and progress of photothermal actuators, their applications from bionic design to intelligent robots in detail.

Language: Английский

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Aerobic mechanochemical reversible-deactivation radical polymerization

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 22, 2024

Abstract Polymer materials suffer mechano-oxidative deterioration or degradation in the presence of molecular oxygen and mechanical forces. In contrast, aerobic biological activities combined with stimulus promote tissue regeneration repair various organs. A synthetic approach which energy synergistically initiate polymerization will afford similar robustness polymeric materials. Herein, mechanochemical reversible-deactivation radical was developed by design an organic mechano-labile initiator converts into activators response to ball milling, enabling reaction proceed air low-energy input, operative simplicity, avoidance potentially harmful solvents. addition, this not only complements existing methods access well-defined polymers but also has been successfully employed for controlled (meth)acrylates, styrenic monomers solid acrylamides as well synthesis polymer/perovskite hybrids without solvent at room temperature are inaccessible other means.

Language: Английский

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Self‐Healing Yet Strong Actuator Materials with Muscle‐Like Diastole and Contraction via Multilevel Relaxations

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 10, 2024

Skeletal muscles represent a role model in soft robotics featuring agile locomotion and incredible mechanical robustness. However, existing actuators lack an optimal combination of actuation parameters (including modes, work capacity, strength, damage repair) to rival biological tissues. Here, biomimetic structural design strategy via multilevel relaxations (α/β/γ/δ-relaxation) modulation is proposed for robust healable actuator materials with muscle-like diastole contraction abilities by orientational alignment dendritic polyphenol-modified nano-assembles eutectogels. The anisotropic hierarchical micro-nanostructures assembled supramolecular interaction mimic the relative slippage actin filaments myosin muscles, ensuring bistable through rapid thermal α-relaxation expansion. Furthermore, kinetically active secondary β/γ/δ-relaxation at reconfigurable interfaces can conquer limited self-healing ability fixed-orientation polymeric chains. obtained artificial muscle exhibits high output actuation, properties (tensile strength 33.5 MPa), desired functional, efficiency (89.7%), exceeding typical natural living systems. bionic micro-nano achieves bottom-up cooperative relaxation integrate all-round performance which paves way substantial advancements next-generation intelligent robotics.

Language: Английский

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Stimuli‐Responsive Polyurethane Actuator Triggered by Light and Heat Reinforced With Disulfide Bonds

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

ABSTRACT The photoisomerization behavior of mesogenic azobenzene makes it possible to convert light energy into mechanical action. However, achieving durability, configurability, and flexibility light‐responsive actuators for artificial intelligence applications remains challenging. Here, a responsive polyurethane (AzoPU‐SS) with remarkable anti‐fatigue anti‐stress properties has been synthesized through the combination dynamic disulfide bonds functional groups. AzoPU‐SS film demonstrated excellent photo‐induced bending, under ultraviolet (UV) exposure, indicating effective transfer molecular deformation from microscopic macroscopic level. Moreover, material's elongation at break was greatly increased, due reversible nature flexible S‐S H bonds, enabling coordinated motion groups producing significant deformation. Such reinforced strategy could be used design smart superior stretchability toughness, helping broaden actuator materials.

Language: Английский

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Stimuli-responsive fiber/fabric actuators for intelligent soft robots: From current progress to future opportunities

Nano Energy, Journal Year: 2024, Volume and Issue: 129, P. 110050 - 110050

Published: July 27, 2024

Language: Английский

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Multi‐Stimuli‐Responsive Weldable Bilayer Actuator with Programmable Patterns and 3D Shapes

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(8)

Published: Nov. 12, 2023

Abstract Soft actuators can harvest environmental energy and convert it into kinetic for motions like bending, twisting, stretching, contracting. However, remains challenging to design soft film complex programmable deformation in three dimensions. Herein, a weldable patternable multi‐stimuli‐responsive bilayer actuator is developed by mask‐assisted spraying coating process, its 3D geometries are achieved welding the sodium alginate (SA) layer using water. The intrinsic hygroscopicity of SA magnetic photothermal properties Fe 3 O 4 nanoparticles enable reversible under different external stimuli: moisture, field, sunlight. Based on these properties, variety intelligent devices including smart curtains, grippers, biomimetic walkers, rolling actuators, swimmers, windmill rotators. All actuating stimulations derived from naturally renewable without consumption any artificial energy, providing important enlightenment green sustainable applications actuators.

Language: Английский

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