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Forced flows in liquid bridges
Current Opinion in Colloid & Interface Science ( IF 8.9 ) Pub Date : 2023-07-29 , DOI: 10.1016/j.cocis.2023.101738
Ilia V. Roisman , Mohammad Abboud , Philipp Brockmann , Fiona Berner , Rüdiger Berger , Pauline Rothmann-Brumm , Hans Martin Sauer , Edgar Dörsam , Jeanette Hussong

Wetting of solid surfaces by liquid deposition, contact dispensing, drop transfer, collision of wet particles, or during coating processes is often accompanied by the formation of liquid bridges between two or more solid substrates. They appear in many applications, like material science, microfluidics, biomedical, chemical, or aerospace engineering, and different fields of physics. In this study, the flows accompanying lifting of a Hele-Shaw cell, stretching or shearing of a liquid bridge, as well as liquid bridge flows observed during printing processes and other important applications, are briefly reviewed. Such flows are governed by surface tension, inertia, stresses associated with the liquid rheology, and forces caused by the substrate's wettability. Instabilities of liquid bridges lead to the formation of finger-like structures on the substrate or the appearance of cavities at the wetted region of the wall. The time required for jet pinch-off also determines the residual liquid volume on both solid bodies.



中文翻译:

液桥中的强制流动

通过液体沉积、接触分配、液滴转移、湿颗粒碰撞或在涂覆过程中对固体表面的润湿通常伴随着两个或多个固体基材之间液桥的形成。它们出现在许多应用中,例如材料科学、微流体、生物医学、化学或航空航天工程以及不同的物理领域。在这项研究中,简要回顾了伴随 Hele-Shaw 池提升、液桥拉伸或剪切的流动,以及在印刷过程和其他重要应用中观察到的液桥流动。这种流动受到表面张力、惯性、与液体流变学相关的应力以及由基材的润湿性引起的力的控制。液桥的不稳定性导致在基材上形成指状结构或在壁的润湿区域出现空腔。射流夹断所需的时间也决定了两个固体上的残留液体体积。

更新日期:2023-07-29
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