Ultrafast Biomimetic Untethered Soft Actuators with Bone‐In‐Flesh Constructs Actuated by Magnetic Field

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

Published: April 26, 2024

Abstract Soft actuators with unique mechanics have gained significant interests for capabilities and versatile applications. However, their actuation mechanisms (usually driven by light, heat, or chemical reactions) result in long times. Reported magnetically actuated soft can produce rapid precise motions, yet complex manufacturing processes may constrain range of Here, the “bone‐in‐flesh” is proposed that constructs combining rigid magnetic structures encapsulated within polymers to create untethered actuators. This approach enables these soft, impact‐resistant, agile a significantly simplified fabrication process. As demonstration examples, multiple are fabricated tested, including auxetic properties, 2D–3D transformations, multi‐stable states. such, this work offers promising solution challenges associated potentially expand applications various domains.

Language: Английский

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Reconfigurable modular soft robots with modulating stiffness and versatile task capabilities

Smart Materials and Structures, Journal Year: 2024, Volume and Issue: 33(6), P. 065040 - 065040

Published: May 17, 2024

Abstract Soft robots have revolutionized machine interactions with humans and the environment to enable safe operations. The fixed morphology of these soft dictates their mechanical performance, including strength stiffness, which limits task range applications. Proposed here are modular, reconfigurable capabilities changing adjusting stiffness perform versatile object handling planar or spatial operational tasks. reconfiguration tunable interconnectivity between elemental soft, pneumatically driven actuation units is made possible through integrated permanent magnets coils. proposed concept attaching/detaching actuators enables be easily rearranged in various configurations change system. While potential for allows arbitrary parallel serial connection on four sides, we demonstrate a configuration called ManusBot. ManusBot hand-like structure digits palm capable individual actuation. this system demonstrated specific examples modulation, variable payload capacity, forming enhanced manipulation robotic interconnecting significantly expands versatility tasks as well adaptability objects shapes, sizes, weights using single

Language: Английский

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Design, actuation, and functionalization of untethered soft magnetic robots with life-like motions: A review

Journal of Magnetism and Magnetic Materials, Journal Year: 2023, Volume and Issue: 586, P. 171160 - 171160

Published: Sept. 1, 2023

Language: Английский

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Magnetically Driven Self‐Healing Polyurea: Innovative Approaches for Smart Material Design

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

Published: Jan. 16, 2025

ABSTRACT Polymer materials, commonly used and susceptible to damage from external forces environmental factors, now have a new intelligent self‐healing variant inspired by living organisms. This material self‐repairs via dynamic covalent bonds noncovalent interactions, mitigating microdamage risks enhancing longevity. The polyurethane urea based on disulfide was prepared reacting prepolymer synthesized lipoic acid (TA), triethylenetramine (TETA), polytetrahydrofuran (PTMEG) with isocyanate. Subsequently, nickel powder modified amino groups the surface hydrolysis of tetraethyl orthosilicate (TEOS) modification 3‐aminopropyltriethoxysilane (APTES), it as magnetic conductive filler added create composites (MPUU‐MNi). self‐repaired at 40◦C for 12 h after damage, efficiency 73%. initial ultimate stress MPUU‐MNi‐10 8.08 MPa, repair, recovered 5.89 MPa. It possesses good properties, mechanical performance, driving performance. Engineers can acquire knowledge about most recent developments in electromagnetic shielding, which they creatively integrate into their projects. Delving cutting‐edge materials production methods could result significant product innovation, company's market edge.

Language: Английский

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A Laser Thermal-Curing Printing: Integrating Fabrication, Reparability, Reconfigurability, and Reprogrammability for Magnetic Soft Robots

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Untethered magnetic soft robots can broaden the working scenarios of and have numerous potential applications in space exploration, industry, medicine. However, existing face challenges such as limited reparability, difficulty expanding functions, adjusting motion mode. Herein, an efficient comprehensive laser thermal-curing printing method is proposed for robots. In this method, directionality photothermal effect infrared property thermosetting resin are utilized to achieve fabrication, precise repair, seamless reconstruction resin-based Besides, enables reprogrammability by exploiting photothermal-induced demagnetization. Further, applied repair a gyro robot controlled movement; reconstruct underwater salvaging cargo, repairing electrical circuit, wheel with three-dimensional structure; reprogram six-leaf robot. These demonstrate that achieves integration reconfigurability, robot, which expected drive paradigm shift robotics manufacturing provide groundbreaking strategy fabricating complex structures.

Language: Английский

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Reprogrammable Mechanical Metamaterials via Passive and Active Magnetic Interactions

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Abstract This study experimentally demonstrates the reprogrammability of a rotating‐squares‐based mechanical metamaterial with an embedded array permanent magnets. How orientation, residual magnetization, and stiffness magnets influence both static dynamic responses is systematically investigated. It showed that by carefully tuning magnet orientation within metamaterial, notable tunability response can be achieved across regimes. More complex magnetic node configurations optimize specific structural decoupling quasi‐static stress–strain behavior from energy absorption under impact loading. Additionally, further enhanced external field, which modulates interactions structure. work paves way for developing engineered components adaptable responses, reprogrammable through either redistribution elements or application field.

Language: Английский

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Bidirectional Bending Soft Actuator with Multistimuli Responsiveness for Environmental Pollutant Monitoring

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Soft actuators have emerged as promising tools for environmental monitoring; however, most existing suffer from multistimuli cross-sensitivity and limited adaptability across various environments. Herein, we propose a bilayer soft actuator composed of graphene-doped polydimethylsiloxane (G@PDMS) layer poly(vinylidene fluoride) (PVDF) layer, capable effective deformation in both air aqueous environments while exhibiting selective responsiveness. The demonstrates responsiveness to organic solvents/vapors, thermal radiation, infrared (IR) radiation air, achieving bidirectional under stimuli with remarkable bending angle 630° load capacity 180 times its self-weight. In environments, the exhibits minimal response IR light but shows high selectivity rapid specific pollutants, time just 1.77 s dichloromethane. Leveraging these properties, developed series functional actuators─including Miura origami, airfoil, artificial muscle configurations─demonstrating their capability replicate complex movements. Moreover, water lily-inspired multienvironmental was designed effectively shield against underwater temperature fluctuations, light, nontarget solvent interference, showing cross-insensitivity potential real-time monitoring applications.

Language: Английский

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Biomolecular Actuators for Soft Robots

Chemical Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

Biomolecules present promising stimuli-responsive mechanisms to revolutionize soft actuators. Proteins, peptides, and nucleic acids foster specific intermolecular interactions, their boundless sequence design spaces encode precise actuation capabilities. Drawing inspiration from nature, biomolecular actuators harness existing properties meet the needs of diverse applications. This review features that respond a wide variety stimuli drive both user-directed autonomous actuation. We discuss how advances in biomaterial fabrication accelerate prototyping precise, custom actuators, we identify biomolecules with untapped potential. Finally, highlight opportunities for multifunctional reconfigurable improve versatility sustainability next-generation

Language: Английский

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Thermomechanical and Morphological Properties of Loligo vulgaris Squid Sucker Ring Teeth

Integrative and Comparative Biology, Journal Year: 2024, Volume and Issue: 64(2), P. 234 - 242

Published: March 11, 2024

Climate change is accelerating the increase of temperatures across planet and resulting in warming oceans. Ocean threatens survival many aquatic species, including squids, has introduced physiological, behavioral, developmental changes, as well physical changes their biological materials composition, structure, properties. Here, we characterize analyze how morphology, mechanical properties European common squid Loligo vulgaris sucker ring teeth (SRT) are affected by temperature. SRT predatory teethed structures located inside suction cups squids that used to capture prey composed semicrystalline structural proteins with a high modulus (GPa-range). We observed here this material reversibly softens temperature, undergoing glass transition at ∼35°C, MPa-range modulus. analyzed protein nanostructures function microscale macroscale morphological understand impact The results suggested even small deviations from habitat can result significant softening (up 40% loss). Temperature following recent global climate trends predictions might affect environmental adaptation species pose emerging challenges adapt increasing ocean temperatures.

Language: Английский

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Development of a Novel Fractional Magneto-Viscoelastic Dynamic Model for an Adaptive Beam Featuring Functional Composite Magnetoactive Elastomers: Simulations and Experimental Studies

Composites Part B Engineering, Journal Year: 2024, Volume and Issue: 280, P. 111501 - 111501

Published: May 3, 2024

Language: Английский

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