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相关概念视频

Colloids and Suspensions01:17

Colloids and Suspensions

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 visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...

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Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
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使用差分动态显微镜测量多模式悬挂.

Joe J Bradley1, Vincent A Martinez1, Jochen Arlt1

  • 1School of Physics & Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh EH9 3FD, UK. w.poon@ed.ac.uk.

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|October 18, 2023
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概括
此摘要是机器生成的。

不同动态显微镜 (DDM) 现在可以在悬浮中测量多个粒子群. 新的方法允许准确的颗粒大小,即使是复杂的多式联络分布,没有先前的知识.

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相关实验视频

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科学领域:

  • 合体和表面科学科学
  • 材料科学是一种材料科学.
  • 光学显微镜是一种光学显微镜.

背景情况:

  • 分差动态显微镜 (DDM) 是一种强大的技术,用于确定悬浮中的平均颗粒大小.
  • 然而,DDM在多模式粒子大小分布方面扎,其中单个平均值是不够的.
  • 现有的DDM分析往往需要对分发的性质的预先了解.

研究的目的:

  • 扩展DDM分析以准确地描述多模式粒子大小分布.
  • 为了研究DDM中不同颗粒大小的信号贡献.
  • 在没有事先知识的情况下开发二模和三模悬浮中的颗粒大小测量方法.

主要方法:

  • 在DDM中分析来自不同颗粒大小的信号贡献.
  • 标准DDM分析对具有先前知识的双模悬浮剂的应用.
  • 使用CONTIN算法对双模悬浮的DDM分析.
  • 选择性分析DDM图像区域用于三模悬浮的特征.

主要成果:

  • 对不同颗粒大小的DDM信号贡献得到了澄清.
  • 标准DDM成功地在双模悬浮中测量了两个群体的尺寸,并具有先前的知识.
  • 通过CONTIN算法,可以在没有事先知识的情况下测量双模悬浮剂的尺寸.
  • 选择性图像分析允许测量三模悬浮的尺寸,克服大颗粒的信号优势.

结论:

  • DDM可以适应分析复杂的多模式粒子大小分布.
  • CONTIN算法和选择性图像分析是多分散系统中DDM的关键进展.
  • 这些方法提高了DDM的适用于未知尺寸分布的真实世界悬浮的适用性.