通过各向异性滑空心轨道实现倾斜的广义微流体整流器,Advanced Materials Technologies

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通过各向异性滑空心轨道实现倾斜的广义微流体整流器
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2023-05-16 , DOI: 10.1002/admt.202300267
Suwan Zhu ₁ , Xin Li ₂ , Yucheng Bian ₁ , Nianwei Dai ₁ , Jiale Yong ₁ , Yanlei Hu ₁ , Jiawen Li ₁ , Dong Wu ₁ , Jiaru Chu ₁

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微流体自发操纵的能力，允许气体或液体沿单一方向渗透，通常通过定制特殊的固气界面几何形状来赋予润湿性梯度和拉普拉斯压差。在此，受到稻叶结构和猪笼草光滑表面的启发，制造了各向异性滑空轨道（ASHT），从而提出了一类独特的倾斜气泡“二极管”，在该二极管上可以单向气泡穿透可逆地打开/关闭。最小过渡倾斜角度取决于管道间距和注油量。气泡穿透的基本机制归因于可变浮力分量和垂直于样品的界面能量梯度之间的竞争。₂气体收集，甚至智能建筑中的干/湿环境管理，这对传统同行来说是一个挑战。该框架应促进微流体控制的发展，在多种流体中具有良好的保留性和广泛的适用性。

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Inclination-Enabled Generalized Microfluid Rectifiers via Anisotropic Slippery Hollow Tracks

The power of spontaneous maneuvering of microfluids that allow gas or liquid to penetrate along a single direction, is usually endowed with the wettability gradient and the Laplace pressure difference through tailoring special solid‒gas interfacial geographies. Herein, inspired by the structures on rice leaves and the slippery surfaces of the pitcher plant, anisotropic slippery hollow tracks (ASHTs) are fabricated and thus propose a class of unique inclination-enabled bubble “diode”, on which one-way bubble penetration can be reversibly switched on/off. The minimum transition tilt angle is subject to the tract spacing and the infused oil amount. The underlying mechanism of bubble penetration is attributed to the competition between the variable buoyancy component and the interfacial energy gradient perpendicular to the samples. A wide spectrum of generalized microfluid maneuvering capabilities is further demonstrated, including heavy oil selective penetration, underwater CO₂ gas collection, and even dry/wet environment management in smart buildings, which are challenging for conventional counterparts. This framework should facilitate the development of microfluid control with favorable retainability and wide applicability in multiple fluids.

更新日期：2023-05-16

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