Mechanics of encapsulated droplets
Mechanics of encapsulated droplets
复制标题
封装液滴的力学
DOI：
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复制
发表时间：
1998
期刊：
影响因子：
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通讯作者：
D. Barthès
中科院分区：
文献类型：
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作者：
D. Barthès
胶囊由内部介质（纯液体或复杂液体）组成，由可变形的膜包裹，通常是半透的。胶囊经常在自然界（活细胞）或工业过程（制药，化妆品或食品工业）中遇到。胶囊在应力作用下的运动、变形和破裂取决于三种独立的内在物理性质：初始几何形状、内部液体粘度和界面本构行为。后者的直接确定是困难的，由于薄和脆弱的界面。多年来，使用了不同的技术（两个平板之间的压缩，微移液管抽吸等）。最近，有人提出了一种新技术，即将胶囊放置在旋转液滴张力计的轴上。测量了增加旋转速率下的变形，并建立了一个力学模型来计算膜的弹性模量。
A capsule consists of an internal medium (pure or complex liquid), enclosed by a deformable membrane that is usually semi-permeable. Capsules are frequently met in nature (living cells) or in industrial processes (pharmaceutical, cosmetic or food industry). The motion, deformation and burst of a capsule under stress depend on three types of independent intrinsic physical properties: initial geometry, internal liquid viscosity and interface constitutive behavior. The direct determination of the latter is difficult owing to the thinness and fragility of the interface. Over the years different techniques have been used (compression between two flat plates, micropipette aspiration, etc.). Recently, a new technique has been proposed, that consists in placing a capsule on the axis of a spinning drop tensiometer. The deformation under increasing rotation rates is measured, and a mechanical model allows to compute the elastic modulus of the membrane.
DOI：
10.1115/1.3138452
发表时间：
1984
期刊：
Journal of biomechanical engineering
影响因子：
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作者：
Hochmuth,RM;Berk,DA
通讯作者：
Berk,DA