Ultra-tough and high-resilience mechanochromic fibres for real-world stress detection

Ultra-tough and high-resilience mechanochromic fibres for real-world stress detection | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Ultra-tough and high-resilience mechanochromic fibres for real-world stress detection Dae Seok Kim, Yu Jin Jeong, Youngeun Lee, Taekyung Won, Ji Won Lee, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4981565/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 06 Mar, 2025 Read the published version in Nature Communications → Version 1 posted You are reading this latest preprint version Abstract Cholesteric liquid crystal elastomer (CLCE) fibres have gained considerable attention as promising candidates for mechanochromic smart textiles across various domains, ranging from fashion to healthcare. However, intrinsically high hysteresis of CLCE during stress relaxation necessitates a time-lag between successive stimulus detections, thereby constraining the practical use in real-world systems. Here, we develop high-tough and low-hysteresis mechanochromic fibres capable of effectively detecting ultra-fast deformations at practical levels. By utilizing a thermoplastic elastomer (TPE) as a core fibre and CLCE as a sheath, we developed sheath-core composite fibres (named CLCE-SC). The CLCE-SC fibres preserve remarkable optical properties of CLCE sheath while improving mechanical properties, including high strength (100.9 MPa), toughness (27274.53 MJ m -3 ), and ultra-fast resilience (160 % strain at 128.3 cm s -1 strain speed) due to the TPE core. We demonstrate on-demand mechanochromic fibres with tuneable moduli of core TPE, expanding the fields of smart textile from single fibre to dynamic sensory environment. Physical sciences/Materials science/Soft materials/Polymers Physical sciences/Materials science/Soft materials/Liquid crystals Full Text Additional Declarations There is NO Competing Interest. Supplementary Files 240826CLCESCSupplementaryInformationfinal.docx MovieS1.mp4 Movie S1. MovieS2.mp4 Movie S2. MovieS3.mp4 Movie S3. Cite Share Download PDF Status: Published Journal Publication published 06 Mar, 2025 Read the published version in Nature Communications → Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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