Three-dimensional capillary ratchet-induced liquid directional steering

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2021-09-16 DOI:10.1126/science.abg7552

Shile Feng, Pingan Zhu, Huanxi Zheng, Haiyang Zhan, Chen Chen, Jiaqian Li, Liqiu Wang, Xi Yao, Yahua Liu, Zuankai Wang

引用次数: 166

Abstract

Conventional understanding has it that a liquid deposited on a surface tends to move along directions that reduce surface energy, which is mainly dictated by surface properties rather than liquid properties, such as surface tension. Achieving well-controlled directional steering remains challenging because the liquid-solid interaction mainly occurs in the two-dimensional (2D) domain. We show that the spreading direction of liquids with different surface tensions can be tailored by designing 3D capillary ratchets that create an asymmetric and 3D spreading profile both in and out of the surface plane. Such directional steering is also accompanied by self-propulsion and high flow velocity, all of which are preferred in liquid transport.

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三维毛细管棘轮诱导液体定向转向

按照传统的理解，沉积在表面上的液体往往会沿着降低表面能的方向移动，而表面能主要由表面特性而非液体特性（如表面张力）决定。由于液固相互作用主要发生在二维（2D）领域，因此实现良好的方向引导仍具有挑战性。我们的研究表明，可以通过设计三维毛细管棘轮来调整不同表面张力液体的扩散方向，从而在表面平面内外形成不对称的三维扩散轮廓。这种定向转向还伴随着自推进和高流速，所有这些都是液体运输中的首选。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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