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Adv."],"published-print":{"date-parts":[[2026,6,19]]},"abstract":"<jats:p>Wearable bio-based fibers are emerging as platforms for biomechanical sensing and physiological interaction. However, achieving high sensitivity to subtle mechanical cues while maintaining flexibility, self-powered output, and distributed perception remains challenging. Inspired by the helical twining mechanics of climbing plant stems, we design a mechano-adaptive auxetic electronic bio-based fiber as an embodied intelligence sensing unit. The dual-modulus helical confinement, achieved by wrapping rigid aramid fiber\/polydimethylsiloxane helices around a flexible collagen aggregate\/waterborne polyurethane core, enables programmable deformation and a stable negative Poisson\u2019s ratio (\u03bd\u00a0=\u00a0\u22120.47). Nonlinear intercomponent coupling facilitates synergistic axial-radial dynamics, amplifying interfacial contact variation under strain. The optimized fiber exhibits ultrahigh sensitivity (strain factor: 11.75), strong electrical output (8.1\u00a0volts), and remarkable power density (8.48\u00a0milliwatts per square meter) with excellent cyclic stability. Integrated into fiber-sensing arrays, it decodes microstrain patterns linked to lower-limb function, offering a scalable strategy for self-powered, adaptive, and durable biomechanical monitoring.<\/jats:p>","DOI":"10.1126\/sciadv.aed6233","type":"journal-article","created":{"date-parts":[[2026,6,19]],"date-time":"2026-06-19T18:00:33Z","timestamp":1781892033000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":0,"title":["Bioinspired heliconical auxetic biofibers for intelligent biomechanical surveillance"],"prefix":"10.1126","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-2072-8456","authenticated-orcid":true,"given":"Yi","family":"Zhou","sequence":"first","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi\u2019an 710021, Shaanxi, China."},{"name":"National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi 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