论文标题
液体桥在多孔尖端的破裂：自发吸收和拉伸的竞争机制
Rupture of liquid bridges on porous tips: Competing mechanisms of spontaneous imbibition and stretching
论文作者
论文摘要
液体桥通常在自然界中遇到，其破裂引起的液体转移被广泛用于各种工业应用中。在这项工作中，以多孔尖端为重点，我们研究了毛细血管影响对通过数值模拟破裂引起的液体转移的影响。为了描述多孔尖端的毛细管效应，提出了时间尺度比例R_T，以比较自发性吸收和外部阻力的竞争机制。在R_T方面，我们开发了一个理论模型，考虑到尖端的几何形状，孔隙率和润湿性，用于估计液体保留率。这项工作中提出的麦卡纳斯主义提供了一种可能在微流体或微分化中精确地控制液体转移的方法。
Liquid bridges are commonly encountered in nature and the liquid transfer induced by their rupture are widely used in various industrial applications. In this work, with the focus on the porous tip, we studied the impacts of capillary effects on the liquid transfer induced by the rupture through numerical simulations. To depict the capillary effects of a porous tip, a time scale ratio, R_T, is proposed to compare the competing mechanisms of spontaneous imbibitiona and external drag. In terms of R_T, we then develop a theoretical model for estimating the liquid retention ratio considering the geometry, porosity and wettability of tips. The mecahnism presented in this work provides a possible approach to control the liquid transfer with better accuracy in microfluidics or microfabrications.
