AI 中文总结
该研究发现少量牛血清白蛋白引入的表面粘弹性可通过稳定锚定液丝变细颈部消除卫星液滴，提出描述其自相似变细行为的标度律，为工业中消除卫星液滴提供新策略。
AI 中文摘要
卫星液滴在液丝断裂过程中广泛形成，是众多工业技术中有害的副产物，但其完全抑制长期以来一直是一项挑战。本文通过实验报道，少量牛血清白蛋白引入的表面粘弹性可通过调控颈缩奇点附近的局域时空拓扑结构，完全消除卫星液滴。在晚期变细阶段，表面剪切黏度抵消毛细力，将变细颈部稳定锚定在两个主液滴之间的中点，从根本上排除卫星液滴的形成。我们进一步提出标度律，描述由表面黏度决定的独特自相似变细行为。这些结果揭示了具有表面流变学的液丝变细动力学，并为实际应用中消除卫星液滴提供了有前景的策略。
英文摘要
Satellite drops form widely during the breakup of liquid threads and constitute deleterious byproducts across a broad range of industrial technologies, yet their complete suppression has remained a longstanding challenge. Here, we experimentally report that surface viscoelasticity introduced by a small amount of bovine serum albumin can fully eliminate satellite drops, via modulating the localized spatiotemporal topology near pinch-off singularity. During the late thinning stage, surface shear viscosity counterbalances the capillary and stably anchors the thinning neck at the midpoint between the two primary beads, fundamentally precluding satellite droplet formation. We further propose a scaling law to describe the unique self-similar thinning behaviors dictated by surface viscosity. These results shed light on the thinning dynamics of liquid threads with surface rheology and offer a promising strategy to eliminate satellite drops in practical applications.
Comments7 pages, 4 figures
