globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1909924117
论文题名:
Apex structures enhance water drainage on leaves
作者: Wang T.; Si Y.; Dai H.; Li C.; Gao C.; Dong Z.; Jiang L.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:4
起始页码: 1890
结束页码: 1894
语种: 英语
英文关键词: Biomimetic ; Capillarity ; Curvature transition ; Drip tip ; Water shedding
Scopus关键词: Alocasia macrorrhizos ; Article ; Colocasia ; Colocasia gigantea ; contact angle ; leaf apex ; leaf shape ; leaf size ; leaf structure ; leaf surface ; Magnolia ; Magnolia denudata ; nonhuman ; precipitation ; priority journal ; retention time ; Robinia pseudoacacia ; water supply ; Alocasia ; anatomy and histology ; physiology ; plant leaf ; rain ; water ; Alocasia ; Drainage ; Plant Leaves ; Rain ; Water
英文摘要: The rapid removal of rain droplets at the leaf apex is critical for leaves to avoid damage under rainfall conditions, but the general water drainage principle remains unclear. We demonstrate that the apex structure enhances water drainage on the leaf by employing a curvature-controlled mechanism that is based on shaping a balance between reduced capillarity and enhanced gravity components. The leaf apex shape changes from round to triangle to acuminate, and the leaf surface changes from flat to bent, resulting in the increase of the water drainage rate, high-dripping frequencies, and the reduction of retention volumes. For wet tropical plants, such as Alocasia macrorrhiza, Gaussian curvature reconfiguration at the drip tip leads to the capillarity transition from resistance to actuation, further enhancing water drainage to the largest degree possible. The phenomenon is distinct from the widely researched liquid motion control mechanisms, and it offers a specific parametric approach that can be applied to achieve the desired fluidic behavior in a well-controlled way. © 2020 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164350
Appears in Collections:气候变化与战略

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作者单位: Wang, T., Chinese Academy of Sciences Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China, School of Future Technology, University of Chinese Academy of Sciences, Beijing, 101407, China; Si, Y., Chinese Academy of Sciences Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; Dai, H., Chinese Academy of Sciences Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; Li, C., Chinese Academy of Sciences Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; Gao, C., Chinese Academy of Sciences Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China, School of Future Technology, University of Chinese Academy of Sciences, Beijing, 101407, China; Dong, Z., Chinese Academy of Sciences Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; Jiang, L., Chinese Academy of Sciences Key Laboratory of Bio-inspired Materials and Interfacial Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China

Recommended Citation:
Wang T.,Si Y.,Dai H.,et al. Apex structures enhance water drainage on leaves[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(4)
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