Rheological properties of vesicles and microcapsules: Flow-induced rotations, oscillations, tumbling motions, deformations, orientations, membrane folding processes and rupture.

囊泡和微胶囊的流变特性：流动引起的旋转、振荡、翻滚运动、变形、方向、膜折叠过程和破裂。

• 批准号: 246783374
• 负责人: Professor Dr. Heinz Rehage
• 金额: --
• 依托单位: Lehrstuhl für Physikalische Chemie II
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/246783374?language=en
• 关键词: Rheological; properties; vesicles; microcapsules; Flow

In the newly planned research project we use microcapsules and vesicles as simple model systems for advanced investigations of the rheological behavior of biological cells in simple shear flow. Caused by the defined construction and the wide palette of chemical variation possibilities it is possible to synthesize soft, tailor-made model particles. The combination of different experimental techniques allows a comprehensive characterization of the flow properties of the capsules or vesicles. The main focus of our interest lies, first of all, in the analysis of the non-linear rheological membrane properties. In order to observe flow-induced phenomena we plan the construction of an improved flow cell (rheoscope) which also permits temperature dependent measurements. In this apparatus we can then observe deformations, orientations, oscillations, tumbling movements, membrane rotations, breaking mechanisms and membrane folding processes. The measured data serve to evaluate recent theoretical models, and they can also be used to understand complicated flow-induced phenomena of soft particles.

在新计划的研究项目中，我们使用微胶囊和囊泡作为简单的模型系统，用于简单剪切流中生物细胞流变行为的高级研究。由于定义的结构和广泛的化学变化的可能性，有可能合成柔软的，定制的模型粒子。不同实验技术的组合允许胶囊或囊泡的流动特性的全面表征。我们感兴趣的主要焦点在于，首先，在非线性流变膜性能的分析。为了观察流动引起的现象，我们计划建设一个改进的流动池（流变仪），也允许温度依赖性的测量。在这个装置中，我们可以观察到变形，取向，振荡，翻滚运动，膜旋转，断裂机制和膜折叠过程。测量数据用于评估最近的理论模型，它们也可以用来理解复杂的流动诱导现象的软颗粒。

项目成果

Wrinkling, tumbling and swinging microcapsules in simple shear flow

简单剪切流中微胶囊的起皱、翻滚和摆动

• DOI: 10.1063/1.4873884
• 发表时间: 2014
• 作者: Unverfehrt;Koleva;Rehage
• 通讯作者: Rehage

Deformation, orientation and bursting of microcapsules in simple shear flow: Wrinkling processes, tumbling and swinging motions

简单剪切流中微胶囊的变形、取向和破裂：起皱过程、翻滚和摆动运动

• DOI: 10.1088/1742-6596/602/1/012002
• 发表时间: 2015
• 期刊: Journal of Physics: Conference Series
• 作者: Unverfehrt;Rehage
• 通讯作者: Rehage