Fatigue‐Resistant Mechanoresponsive Color‐Changing Hydrogels for Vision‐Based Tactile Robots

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

Published: Sept. 27, 2024

Abstract Mechanoresponsive color‐changing materials that can reversibly and resiliently change color in response to mechanical deformation are highly desirable for diverse modern technologies optics, sensors, robots; however, such rarely achieved. Here, a fatigue‐resistant mechanoresponsive hydrogel (FMCH) is reported exhibits reversible, resilient, predictable changes under stress. At its undeformed state, the FMCH remains dark circular polariscope; upon uniaxial stretching of up six times initial length, it gradually shifts from black, gray, yellow, purple. Unlike traditional materials, maintains performance across various strain rates 10 000 cycles. Moreover, demonstrates superior properties with fracture toughness 3000 J m −2 , stretchability 6, fatigue threshold 400 . These exceptional optical features attributed FMCH's substantial molecular entanglements hygroscopic salts, which synergistically enhance while preserving performance. One application this as tactile sensoris then demonstrated vision‐based robots, enabling them discern material stiffness, object shape, spatial location, applied pressure by translating stress distribution on contact surface into discernible images.

Language: Английский

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Crossover scaling of structural and mechanical properties in 3D assemblies of non-spherical, frictional particles

Communications Physics, Journal Year: 2025, Volume and Issue: 8(1)

Published: Feb. 26, 2025

Language: Английский

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Particle shape effect on dynamic mechanical responses, energy conversion and fragmentation behaviours of granular materials under impact

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 470, P. 140525 - 140525

Published: March 4, 2025

Language: Английский

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Soft matter physics of the ground beneath our feet

Soft Matter, Journal Year: 2024, Volume and Issue: 20(30), P. 5859 - 5888

Published: Jan. 1, 2024

The soft part of the Earth's surface - ground beneath our feet constitutes basis for life and natural resources, yet a general physical understanding is still lacking. In this critical time climate change, cross-pollination scientific approaches urgently needed to better understand behavior planet's surface. major topics in current research area cross different disciplines, spanning geosciences, various aspects engineering, material sciences, physics, chemistry, biology. Among these, matter physics has emerged as fundamental nexus connecting underpinning many questions. This perspective article multi-voice effort bring together views approaches, questions insights, from researchers that work emerging area, feet. particular, we identify four challenges concerned with dynamics ground: (I) modeling grain scale, (II) near-criticality, (III) bridging scales, (IV) life. For each challenge, present selection by individual authors, providing specific context, recent advances, open Through this, seek provide an overview opportunities broad Soft Matter community contribute ground, strive towards common language, encourage new collaborations across spectrum scientists interested

Language: Английский

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MPFEM investigation on densification and mechanical structures during ferrous powder compaction

Advanced Powder Technology, Journal Year: 2024, Volume and Issue: 35(12), P. 104700 - 104700

Published: Oct. 24, 2024

Language: Английский

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