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The key lies in the development of coregulated materials structure and associated physical\u2010chemical properties, enabling efficient fluid management and molecular interactions crucial for advancing water\u2010power technologies. Herein, we develop hydrogel hollow filaments using a sustainable continuous\u2010assembly metamorphic (CAM) approach that achieves nonequilibrium hierarchical assembly, delivering control over conformational structure and attributes for integral water\u2010power innovations. This design principle of self\u2010organization transformation underpins collective properties and addresses prevalent fluidic perturbation and breakup issues in filament manufacturing. CAM hollow filaments demonstrate auto\u2010pumping differentiated ionic interaction, with key advancements including \u223c1000% improvement in thermopower for energy harvesting, \u223c90% efficiency in trace\u2010lithium ions collection. This work marks a new methodology of clean energy transition and resource sustainability, while aligning with the broader goals of clean energy and economic sustainability.<\/jats:p>","DOI":"10.1002\/adma.75088","type":"journal-article","created":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T04:57:46Z","timestamp":1789966666000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Continuous Transformation in Spatially Coregulated Hollow Filaments for Water\u2010Powered Energy"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3535-3135","authenticated-orcid":false,"given":"Xinglong","family":"Pan","sequence":"first","affiliation":[{"name":"Department of Electrical and Computer Engineering National University of Singapore  Singapore Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wanheng","family":"Lu","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering National University of Singapore  Singapore Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-9716-2509","authenticated-orcid":false,"given":"Haitao","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering National University of Singapore  Singapore Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3182-3029","authenticated-orcid":false,"given":"Xiao\u2010Qiao","family":"Wang","sequence":"additional","affiliation":[{"name":"National Engineering Laboratory for Modern Silk College of Textile and Clothing Engineering Soochow University  Suzhou P.R. 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