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 | [1]Beihang Univ, Sch Mech Engn & Automat, Beijing 100191, Peoples R China.; |
| 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) |
| 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 |
| DOI | 10.1038/nature17189 |
| 重要成果类型 | 重要期刊 |
| 被引频次 | 1 |
| 人气指数 | 679 |
| 下载次数 | 1 |
| 浏览次数 | 674 |
| 基金 | National Natural Science Foundation of China [51290292, 51175020, 51475029, 21431009]; Beihang University |
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