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A Microfluidic-based Hydrodynamic Trap for Single Particles
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在以双停滞点为特征的基于旋转的微流体芯片上进行的微粒子操纵.

Yanping Dang1, Shuai Hu1, Zhiming Ou1

  • 1School of Mechanical and Automotive Engineering, South China University of Technology, Wushan Road, Tianhe District, 510641 Guangzhou, P. R. China.

Langmuir : the ACS journal of surfaces and colloids
|August 3, 2023
PubMed
概括

本研究引入了一种双停滞微流体芯片,用于使用旋转流域同时精确控制两个微粒. 这种新的设计增强了生物/化学粒子相互作用的软控制和操纵能力.

科学领域:

  • 微流体学 微流体学
  • 流体动力学 流体动力学
  • 生物技术是生物技术.

背景情况:

  • 基于停滞的微流体提供非接触式,低成本的微粒控制.
  • 现有的方法在精确的姿势调节和软控制方面存在局限性.
  • 之前的工作重点是使用旋流区域 (SFR) 控制单颗粒.

研究的目的:

  • 提出和验证一种新的3微通道结构,用于同时控制两个微粒.
  • 调查用于产生两个SFR的双停滞模型,用于粒子捕获和操纵.
  • 通过调整微通道输入速度来探索SFRs的调节.

主要方法:

  • 计算流体动力学 (CFD) 模拟用于优化流体场结构.
  • 为了实验验证,制造了一个3D打印的微流体芯片.
  • 输入速度被调整以调节生成的SFR和停滞点.

主要成果:

  • 双停滞模型成功地产生了两个具有稳定的停滞点的不同的SFR.
  • 通过实验证明了两个微粒的同时捕获和控制.
  • 模拟和实验结果显示,在流量简化和停滞点调节方面存在强烈一致.
  • 不同形状和大小的微粒被有效地捕获和操纵.

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结论:

  • 双停滞微流体芯片可以为基于旋转的系统提供先进的流场结构.
  • 这项技术为软接触和灵活操纵多个微粒提供了一个平台.
  • 这些发现为研究生物/化学微粒之间的相互作用提供了洞察力.