Water transport mechanism through open capillaries analyzed by direct surface modifications on biological surfaces.
Water transport mechanism through open capillaries analyzed by direct surface modifications on biological surfaces.
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DOI：
10.1038/srep03024
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发表时间：
2013-10-23
影响因子：
4.6
通讯作者：
Shimomura, Masatsugu
中科院分区：
文献类型：
--
作者：
Ishii, Daisuke;Horiguchi, Hiroko;Hirai, Yuji;Yabu, Hiroshi;Matsuo, Yasutaka;Ijiro, Kuniharu;Tsujii, Kaoru;Shimozawa, Tateo;Hariyama, Takahiko;Shimomura, Masatsugu
一些小动物仅使用表面能被动驱动的水运输机制。然而，人们对被动水传输机制知之甚少，因为很难测量小区域内微结构的润湿性并确定生物表面的化学性质。在此，我们开发了通过使用纳升体积水滴和高速视频系统直接分析化学改性生物表面润湿性的结构效应。码头蟑螂 Ligia extrica 仅通过腿部开放的毛细血管输送水，这些毛细血管含有毛发和桨状的微结构。分析了用自组装单层化学修饰的腿的结构效应，使码头蟑螂具有由微结构之间的润湿性差异被动驱动的智能水运输系统。我们预计这种被动水传输机制可能会激发新的仿生流体操纵，无论有或没有重力场。
Some small animals only use water transport mechanisms passively driven by surface energies. However, little is known about passive water transport mechanisms because it is difficult to measure the wettability of microstructures in small areas and determine the chemistry of biological surfaces. Herein, we developed to directly analyse the structural effects of wettability of chemically modified biological surfaces by using a nanoliter volume water droplet and a hi-speed video system. The wharf roach Ligia exotica transports water only by using open capillaries in its legs containing hair- and paddle-like microstructures. The structural effects of legs chemically modified with a self-assembled monolayer were analysed, so that the wharf roach has a smart water transport system passively driven by differences of wettability between the microstructures. We anticipate that this passive water transport mechanism may inspire novel biomimetic fluid manipulations with or without a gravitational field.
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