文献详情
Continuous directional water transport on the peristome surface of Nepenthes alata
文献类型期刊
作者Chen, Huawei[1];Zhang, Pengfei[2];Zhang, Liwen[3];Iu, Hongliang L.[4];Jiang, Ying[5];Zhang, Deyuan[6];Han, Zhiwu[7];Jiang, Lei[8]
机构
通讯作者Chen, HW; Zhang, DY (reprint author), Beihang Univ, Sch Mech Engn & Automat, Beijing 100191, Peoples R China.; Jiang, L (reprint author), Chinese Acad Sci, Tech Inst Phys & Chem, Lab Bioinspired Smart Interface Sci, Beijing 100190, Peoples R China.; Jiang, L (reprint author), Beihang Univ, Sch Chem & Environm, Beijing 100191, Peoples R China.
来源信息年:2016  卷:532  期:7597  页码范围:85-89  
期刊信息NATURE影响因子和分区  ISSN:0028-0836
摘要Numerous natural systems contain surfaces or threads that enable directional water transport(1-7). This behaviour is usually ascribed to hierarchical structural features at the microscale and nanoscale, with gradients in surface energy(8),9 and gradients in Laplace pressure(10) thought to be the main driving forces. Here we study the prey-trapping pitcher organs of the carnivorous plant Nepenthes alata. We find that continuous, directional water transport occurs on the surface of the 'peristome'-the rim of the pitcher-because of its multiscale structure, which optimizes and enhances capillary rise(11,12) in the transport direction, and prevents backflow by pinning in place any water front that is moving in the reverse direction. This results not only in unidirectional flow despite the absence of any surface-energy gradient, but also in a transport speed that is much higher than previously thought. We anticipate that the basic 'design' principles underlying this behaviour could be used to develop artificial fluid-transport systems with practical applications.
收录情况SCIE(WOS:000373555500038)  PubMed(27078568)  
所属部门机械工程及自动化学院;化学与环境学院
链接地址http://www.nature.com/nature/journal/v532/n7597/full/nature17189.html
DOI10.1038/nature17189
重要成果类型重要期刊
被引频次1
人气指数1169
下载次数9
浏览次数1154
基金National Natural Science Foundation of China [51290292, 51175020, 51475029, 21431009]; Beihang University
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