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Mechanisms of Membrane-bending01:15

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The living membranes are flexible due to their fluid mosaic nature; however, their bending into different shapes is an active process regulated by specific lipids and proteins. The membrane bending can be transient as seen in vesicles or stable for a long time as in microvilli. Cells regulate the size, location, and duration of the membrane curvature.
Membrane bending can happen due to intrinsic changes in lipid composition or extrinsic association with different proteins. The proteins involved...
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液晶微流的曲率介导编程 液晶微流的编程

Kamil Fedorowicz1, Robert Prosser1, Anupam Sengupta2

  • 1School of Engineering, The University of Manchester, Manchester M13 9PL, UK. kamil.fedorowicz@manchester.ac.uk.

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概括

频道曲率程序液晶 (LC) 通过诱导导体梯度而流动,控制微流体设备中的运输. 这一发现使得新的LC微流体门和生物系统中的应用成为可能.

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科学领域:

  • 流体动力学 流体动力学
  • 材料科学 材料科学 材料科学
  • 微流体学 微流体学

背景情况:

  • 液晶微流体提供可编程的流量控制.
  • 曲线微通道中的流动行为在很大程度上仍未被研究.

研究的目的:

  • 调查和证明通道曲率如何影响液晶 (LC) 流动.
  • 探索微流体应用中曲率介导控制的潜力.

主要方法:

  • 实验研究使用U和L形微通道与阴性LC.
  • 数字模拟用于分析流动和导向场动态.
  • 极化光学显微镜用于流动可视化.

主要成果:

  • 道曲率诱导横流诱导的导向梯度.
  • 导演场影响和控制LC流.
  • 曲率介导的控制允许可编程的放大或抑制LC运输.

结论:

  • 微通道几何,特别是曲率,是编程LC流量的关键因素.
  • 这项研究引入了新型LC微流体门的概念.
  • 这些发现对理解复杂生物系统中的LC行为有意义.