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Traditional operation requires energy to overcome gravity and establish flow in a closed system. Achieving sustainable high flux siphon drainage without energy input remains a challenge due to viscous dissipation. Here, an unexpected open siphon behavior on the South American pitcher plant <jats:italic>Heliamphora minor<\/jats:italic> consisting of trichomes covered pitcher and a wedge\u2010shaped sheath is examined. Exploiting the concept of <jats:italic>Digital Twin<\/jats:italic>, a new biomimetic research method by transforming the biological sample to a virtual 3D model is proposed and unveiled that maintained connection of wicking on sub\u2010millimeter long trichomes due to asymmetric pressure distribution and ascending in wedge sheath under unbalanced pressure forms continuous surface flow. Exploring this mechanism, a biomimetic siphon device achieving continuous high flux exposed to ambient air is constructed. Besides, particles floating on the meniscus in the outside wedge move under a curvature gradient as water ascends, which implies a biological nutrient capture method and new dust collection manner in the drainage system. Applying the underlying principle enhances the siphon efficiency of floor drains and has the potential for other liquid transfer device design improvements.<\/jats:p>","DOI":"10.1002\/smll.202307079","type":"journal-article","created":{"date-parts":[[2024,5,3]],"date-time":"2024-05-03T10:40:17Z","timestamp":1714732817000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Capillarity Constructed Open Siphon for Sustainable Drainage"],"prefix":"10.1002","author":[{"given":"Fenglin","family":"Chen","sequence":"first","affiliation":[{"name":"CAS Key Laboratory of Bio\u2010inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences  Beijing 100190 China"},{"name":"School of Future Technology University of Chinese Academy of Sciences  Beijing 100049 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziyang","family":"Cheng","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Bio\u2010inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences  Beijing 100190 China"},{"name":"School of Future Technology University of Chinese Academy of Sciences  Beijing 100049 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Can","family":"Gao","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Bio\u2010inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences  Beijing 100190 China"},{"name":"School of Future Technology University of Chinese Academy of Sciences  Beijing 100049 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuxin","family":"Li","sequence":"additional","affiliation":[{"name":"Suzhou Institute for Advanced Research University of Science and Technology of China  Suzhou Jiangsu 215123 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chengqi","family":"Zhang","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Bio\u2010inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences  Beijing 100190 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cunlong","family":"Yu","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Bio\u2010inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences  Beijing 100190 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0729-5756","authenticated-orcid":false,"given":"Zhichao","family":"Dong","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Bio\u2010inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences  Beijing 100190 China"},{"name":"School of Future Technology University of Chinese Academy of Sciences  Beijing 100049 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Jiang","sequence":"additional","affiliation":[{"name":"CAS Key Laboratory of Bio\u2010inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry Chinese Academy of Sciences  Beijing 100190 China"},{"name":"School of Future Technology University of Chinese Academy of Sciences  Beijing 100049 China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,5,3]]},"reference":[{"key":"e_1_2_9_1_1","doi-asserted-by":"crossref","first-page":"114","DOI":"10.1038\/scientificamerican0685-114","volume":"252","author":"Hodge A. 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