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通过界面粒子阻塞的剧烈滴滴变形

Luoran Shang^1,2, Ke Xu³, Peter J Lu^1,4

¹John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138.

Proceedings of the National Academy of Sciences of the United States of America

|October 10, 2024

概括

稳定粒子滴在剪切流下独特地变形,形成纹和化的弹性外. 这创造了新的核心外结构,可通过像佩克莱特数这样的流量条件来控制.

科学领域:

流体动力学流体动力学
体科学是关于体的科学.
材料科学是一种材料科学.

背景情况:

不混合的液体中的水滴通常是球形的,这是由于界面张力.
表面活性剂和体颗粒稳定滴滴,但使用不同的机制.
粒子稳定在压缩下创造了一个类似固体的接口,与表面活性剂不同.

研究的目的:

研究粒子稳定不对称性对剪切下滴状物形状的影响.
在微通道中探索粒子稳定滴滴的独特变形.
了解粒子迁移和阻塞如何影响滴滴形态.

主要方法:

在受约束的微通道中,将颗粒稳定的滴滴置于剪切流.
观察滴水形状动态和粒子分布.
分析皮克莱特数对滴滴变形的影响.

主要成果:

剪切诱导粒子迁移,在滴滴后面形成弹性外.
观察到弹性外的纹和化.
形成独特的核心外滴状结构.
滴滴形状取决于佩克莱特数,平衡剪切和扩散.

结论:

粒子稳定接口中的不对称力导致复杂的滴滴变形.
剪切流可以可控地创建各种各样的滴状形状,包括核心外结构.
这些发现为粒子界面相互作用和微流体操纵提供了洞察力.

关键词:

合物合物合物滴滴滴滴滴滴滴滴滴滴滴滴滴滴干扰是干扰的微流体学在微流体学方面表面活性剂是一种表面活性剂.

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