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平和纹的封装液滴:由重力和蒸发诱导的形状变形

Davide Riccobelli¹, Hedar H Al-Terke^2,3, Päivi Laaksonen⁴

¹MOX-Dipartimento di Matematica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy.

Physical review letters

|June 9, 2023

概括

水蛋白 (HFBI) 的蒸发滴滴形成弹性薄膜. 滴滴的形状变化,如缩或纹,取决于重力和基板,在应用中提供新的控制.

科学领域:

流体动力学流体动力学
材料科学是一种材料科学.
生物物理学的生物物理.

背景情况:

水蛋白是对真菌发育至关重要的两性蛋白质.
蛋白质稳定滴在蒸发过程中表现出复杂的行为.
了解滴滴形态是微流体学和材料设计的关键.

研究的目的:

为了研究蒸发的蛋白质滴的形态变化.
分析重力对液滴形状演变的影响.
开发一个预测滴滴变形和薄膜形成的模型.

主要方法:

对悬挂和静止滴的实验观测.
基于水的HFBI溶液的受控蒸发.
开发和应用一个重力弹性毛囊模型.

主要成果:

在临界溶液度以上形成封装弹性薄膜.
滴显示膜缩;吊滴显示周围纹.
引力显著影响液滴形态,即使在小规模.

结论:

蒸发诱导的薄膜形成导致不同的水滴形态.
一个重力-弹性毛囊模型准确地预测了这些变化.
结果允许控制工程和生物医学用途的滴水形状.

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