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相关概念视频

Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

435
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,...
435
Capillary Electrophoresis: Instrumentation01:20

Capillary Electrophoresis: Instrumentation

263
Capillary electrophoresis instrumentation typically consists of several key components. A high-voltage power supply generates the electric field necessary for the separation by connecting to an anode (the positively charged electrode) and a cathode (the negatively charged electrode) located in buffer reservoirs at each end of the capillary tube. The system includes a sample vial, a fused silica capillary tube coated with polyimide for mechanical strength through which the sample components...
263
High-Performance Liquid Chromatography: Elution Process01:05

High-Performance Liquid Chromatography: Elution Process

536
In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
536

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Label-free Isolation and Enrichment of Cells Through Contactless Dielectrophoresis
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介电性液晶透镜是由交叉的侧墙电极驱动的.

Tao Chen, Xiuting Shang, Jingyi Sun

    Optics letters
    |August 15, 2023
    PubMed
    概括

    这项研究引入了一种新型的消极电泳液晶 (DEP) 液晶镜片,其侧壁间接数位电极. 这种先进的液态镜头提供稳定的光轴,更快的响应时间,以及从负到正的连续焦点范围.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 微流体学 微流体学
    • 材料科学 材料科学 材料科学

    背景情况:

    • 传统的液态镜头面临着光轴稳定性和响应时间的挑战.
    • 电透镜虽然有效,但制造起来可能很复杂.
    • 压电泳 (DEP) 为可调光镜提供了可调光镜的替代启动机制.

    研究的目的:

    • 提出并制造一种新型的介电泳液晶体 (DEP) 透镜,利用侧壁上的互数字电极.
    • 为了证明与现有的DEP镜头相比,增强了稳定性,简化了构造和可调节的焦距.
    • 为了实现负焦距和正焦距之间的连续过渡.

    主要方法:

    • 制造一个截断的圆腔DEP液体透镜,孔径为5毫米.
    • 使用在侧墙上的介电层中包裹的双个柔性线电极,用于DEP启动.
    • 在不同电压下 (0-260 Vrms) 对焦距调整性和响应时间的表征.

    主要成果:

    • 拟议的DEP液晶镜头实现了最短的负焦距和正焦距,分别为-100mm和100mm.
    • 驾驶时间为190毫秒,放松时间为133毫秒.
    • 确认持续调整焦点从负到正的焦距.

    更多相关视频

    Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow
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    Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow
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    Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow

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    Light-Induced Dielectrophoresis for Characterizing the Electrical Behavior of Human Mesenchymal Stem Cells
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    结论:

    • 侧壁互数字化的电极DEP液晶镜头提供了一个稳定的光学轴和简化的制造.
    • 该设备提供快速响应时间和广泛的,连续调节的焦距范围.
    • 这种设计为紧和多功能液态镜头应用提供了有前途的进步.