Overwritable Liquid Selective Open Channel
Overwritable Liquid Selective Open Channel
复制标题
可重写液体选择性开放通道
DOI：
10.1002/sia.6109
复制
发表时间：
2016
影响因子：
1.7
通讯作者：
Daisuke Ishii
中科院分区：
文献类型：
--
作者：
Shuto Ito;Daisuke Ishii
我们制作了一个可重写的液体通道，液体的选择性和设计的灵活性，灵感来自沿海动物。这种动物有成对的腿，在腿上有开放的毛细血管结构，我们称之为开放通道，利用界面自由能自发地吸收水。我们提取了一种控制这种现象的基本机制，并将其应用于人工开放通道，旨在不使用外部能量的情况下运输和操纵各种液体。经过表面改性后，人工开放通道能够通过表面化学和结构的协同效应克服重力输送各种液体，并且由部分改性引起的表面能对比度使某些液体在通道的特定区域上扩散。此外，发现液体通道的这些润湿性质和形状被一组表面改性多次覆盖。这些具有液体选择性的开放通道适用于各种微结构表面，为可重复使用的微流体和芯片实验室设备的应用开辟了道路。版权所有© 2016约翰威利父子有限公司.
We fabricated an overwritable liquid channel with liquid selectivity and design flexibility inspired by a coastal animal. The animal has pairs of legs on which open‐air capillary structures, what we call open channel, uptake water spontaneously using interfacial free energy. We extracted an essential mechanism controlling this phenomenon and applied it to artificial open channels, aiming at transport and manipulating a variety of liquids without using external energies. After surface modifications, the artificial open channels were able to transport a variety of liquids against gravity by the synergetic effect of surface chemistry and structure, and the surface energy contrast induced by partial modifications lets a certain liquid spread through on specific areas of the channel. In addition, these wetting properties and shapes of the liquid channels were found to be overwritten over multiple times with a set of surface modifications. These rewritable open channels with liquid selectivity are applicable to a wide variety of microstructure surfaces, opening the way for its application of reusable microfluidics and lab‐on‐a‐chip devices. Copyright © 2016 John Wiley & Sons, Ltd.