Superomniphobic Surfaces for Effective Chemical Shielding
Superomniphobic Surfaces for Effective Chemical Shielding
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DOI：
10.1021/ja310517s
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发表时间：
2013-01-16
影响因子：
15
通讯作者：
Tuteja, Anish
中科院分区：
文献类型：
--
作者：
Pan, Shuaijun;Kota, Arun K.;Tuteja, Anish
超广谱表面显示了接触角>；150度和与几乎所有接触液体的低接触角滞后。在这项工作中，我们报告了一系列不同的非牛顿液体表现出超全泛的表面，以及对广泛的牛顿液体表现出超全泛的表面。我们的表面具有分层的可再入纹理，显著减少了固-液接触面积。几乎所有液体，包括浓缩的有机和无机酸、碱和溶剂，以及粘弹性聚合物溶液，都可以很容易地在我们的表面滚动和反弹。因此，它们可以作为有效的化学屏障，阻挡几乎所有液体--有机或无机、极性或非极性、牛顿或非牛顿。
Superomniphobic surfaces display contact angles >150 degrees and low contact angle hysteresis with essentially all contacting liquids. In this work, we report surfaces that display superomniphobicity with a range of different non-Newtonian liquids, in addition to superomniphobicity with a wide range of Newtonian liquids. Our surfaces possess hierarchical scales of re-entrant texture that significantly reduce the solid-liquid contact area. Virtually all liquids including concentrated organic and inorganic acids, bases, and solvents, as well as viscoelastic polymer solutions, can easily roll off and bounce on our surfaces. Consequently, they serve as effective chemical shields against virtually all liquids-organic or inorganic, polar or nonpolar, Newtonian or non-Newtonian.