拉伸折叠不稳定性与纳米乳液
Stretching Folding Instability and Nanoemulsions
摘要：
在这里，我们展示了使用硅油（100cSt）和水的微流体流动聚焦装置中的折叠-拉伸不稳定性。这段流体动力学视频演示了两股水流聚焦在一条振荡的油线上。我们展示了这些振荡的几个高速序列，速度为30，000帧/秒。一旦线在下游的较慢移动的池中减速，不稳定性就会发生，并且形成油包水液滴。我们以500，000帧/秒的速度揭示夹断的细节。夹断是如此的可重复，以至于出现复杂的液滴图案。一些液滴低于分辨率极限，因此直径小于1微米。
英文摘要：
Here we show a folding-stretching instability in a microfluidic flow focusing device using silicon oil (100cSt) and water. The fluid dynamics video demonstrates an oscillating thread of oil focused by two co-flowing streams of water. We show several high-speed sequences of these oscillations with 30,000 frames/s. Once the thread is decelerated in a slower moving pool downstream an instability sets in and water-in-oil droplets are formed. We reveal the details of the pinch-off with 500,000 frames/s. The pinch-off is so repeatable that complex droplet patterns emerge. Some of droplets are below the resolution limit, thus smaller than 1 micrometer in diameter.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
