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相关概念视频

Colloids03:22

Colloids

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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
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Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

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Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
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Distillation: Vapor–Liquid Equilibria01:01

Distillation: Vapor–Liquid Equilibria

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Distillation is a separation technique that takes advantage of the boiling point properties of disparate elements in a mixture. To perform distillation, we begin by heating a miscible mixture of two liquids with a significant difference in boiling points (at least 20°C). As the solution heats up and reaches the bubble point of the more volatile component, some molecules of the more volatile component transition into the gas phase and travel upward into the condenser, which is a glass tube...
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In vitro Digestion of Emulsions in a Single Droplet via Multi Subphase Exchange of Simulated Gastrointestinal Fluids
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阶段分离二元混合物的活动驱动乳化.

Javier Díaz1, Ignacio Pagonabarraga1

  • 1Universitat de Barcelona, Universitat de Barcelona, Departament de Física de la Matèria Condensada, Martí i Franqués 1, 08028 Barcelona, Spain and Universitat de Barcelona Institute of Complex Systems (UBICS), 08028 Barcelona, Spain.

Physical review letters
|March 25, 2025
PubMed
概括
此摘要是机器生成的。

活性粒子在软封闭的介质中创建稳定,非平衡的结构. 它们阻止粗化并形成动态乳液,表现出由竞争的能量尺度驱动的丰富的联合组装行为.

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科学领域:

  • 软物质物理学 软物质物理学
  • 活性物质系统的活性物质系统
  • 复杂的流体动力学.

背景情况:

  • 活性粒子表现出自我组装成新出现的结构.
  • 软介质的限制导致复杂的行为和多样化的形态.
  • 了解混合物中的活性粒子动态对于新出现的现象至关重要.

研究的目的:

  • 调查活跃的布朗粒子和被封闭的二进制混合物之间的相互作用.
  • 描述新出现的形态学和动态行为.
  • 确定活性压力如何影响相位分离和粗化动态.

主要方法:

  • 利用计算机模拟来模拟二进制混合物中的活性布朗粒子.
  • 分析了动态相互作用和新兴结构.
  • 量化粒子活动,封闭效应,以及由此产生的形态.

主要成果:

  • 活性颗粒稳定非平衡形态,阻止粗化.
  • 适度活性会导致稳定的活性乳液,具有定义的液滴大小.
  • 较高的活性导致具有广泛滴滴大小分布的动态乳液.
  • 活性颗粒驱动相隔混合物远离平衡.

结论:

  • 活性颗粒施加的压力与表面张力竞争,稳定乳液.
  • 粒子活动决定了新兴结构的类型和稳定性.
  • 丰富的组装行为源于活性粒子混合物的竞争能量尺度.