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240927s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202407925
|2 doi
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|a pubmed24n1550.xml
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|a (NLM)39328076
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Liu, Jiabin
|e verfasserin
|4 aut
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|a Fatigue-Resistant Mechanoresponsive Color-Changing Hydrogels for Vision-Based Tactile Robots
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 27.09.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.
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|a Mechanoresponsive color-changing materials that can reversibly and resiliently change color in response to mechanical deformation are highly desirable for diverse modern technologies in optics, sensors, and robots; however, such materials are rarely achieved. Here, a fatigue-resistant mechanoresponsive color-changing hydrogel (FMCH) is reported that exhibits reversible, resilient, and predictable color changes under mechanical stress. At its undeformed state, the FMCH remains dark under a circular polariscope; upon uniaxial stretching of up to six times its initial length, it gradually shifts its color from black, to gray, yellow, and purple. Unlike traditional mechanoresponsive color-changing materials, FMCH maintains its performance across various strain rates for up to 10 000 cycles. Moreover, FMCH demonstrates superior mechanical properties with fracture toughness of 3000 J m-2, stretchability of 6, and fatigue threshold up to 400 J m-2. These exceptional mechanical and optical features are attributed to FMCH's substantial molecular entanglements and desirable hygroscopic salts, which synergistically enhance its mechanical toughness while preserving its color-changing performance. One application of this FMCH as a tactile sensoris then demonstrated for vision-based tactile robots, enabling them to discern material stiffness, object shape, spatial location, and applied pressure by translating stress distribution on the contact surface into discernible images
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|a Journal Article
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|a fatigue resistant
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|a photoelasticity
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|a soft materials
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|a tactile sensor
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|a Li, Wei
|e verfasserin
|4 aut
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1 |
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|a Yu, She
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Blanchard, Sean
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lin, Shaoting
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g (2024) vom: 27. Sept., Seite e2407925
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g year:2024
|g day:27
|g month:09
|g pages:e2407925
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|u http://dx.doi.org/10.1002/adma.202407925
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