论文标题
爆发
Bursting Drops
论文作者
论文摘要
几十年来，全世界的研究人员都研究了与自然的人造油泄漏有关的现象，例如水体内的油滴形成，它们的上升和油脂破裂后的浮油进化。尽管如此，导致浮油形成的事件 - 到目前为止，液态空气界面处的油滴爆发尚未引起人们的注意。在这项工作中，我们对此进行了调查，并报告了违反直觉的喷射逆转，该逆转释放了散装中的女儿油滴，而不是在爆裂气泡中观察到的向上射击喷射喷射喷射。我们表明，因此产生的子液滴大小可以与散装液体特性相关，并且可以通过增加散装粘度或添加微粒来抑制其形成。我们通过合成胶体采摘液滴并在双重乳液中表现出爆裂化合物滴剂的应用以及对雨滴对光滑的撞击的研究，进一步证明了结果的重要性。这些结果可能会对不同地区进行巨大变化，包括气候学，海洋，大气科学，胶体合成和药物递送。
For decades, researchers worldwide have investigated phenomena related to natural, artificial oil leakages such as oil drop formation within water bodies, their rise, and oil slick evolution after they breach the water-air interface. Despite this, the event leading to slick formation -the bursting of oil drops at the liquid-air interface has remained unnoticed thus far. In this work, we investigate this and report a counterintuitive jetting reversal that releases a daughter oil droplet inside the bulk as opposed to the upwards shooting jets observed in bursting air bubbles. We show that the daughter droplet size thus produced can be correlated to the bulk liquid properties and that its formation can be suppressed by increasing the bulk viscosity or by the addition of microparticles. We further demonstrate the significance of our results by synthesizing colloidal pickered droplets and show applications of bursting compound drops in double emulsions and studies on raindrop impact on a slick. These results could be immensely transformative for diverse areas, including climatology, oceanic, atmospheric sciences, colloidal synthesis and drug delivery.
