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Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
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一个双向的声学微,由振荡的尖端结构驱动.

Bendong Liu1, Meimei Qiao1, Shaohua Zhang1

  • 1Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China.

Micromachines
|July 8, 2023
PubMed
概括

这项研究介绍了一种新的双向声学微型,使用振荡的尖端结构. 该设备实现了双向控制的微流体流动,显示了微流体应用的巨大潜力.

科学领域:

  • 微流体学 微流体学
  • 声学设备 声学设备
  • 生物医学工程 生物医学工程

背景情况:

  • 微流体系统需要精确控制流体运动.
  • 现有的微往往缺乏双向能力或操作复杂.
  • 声学驱动提供了一种非接触式方法,用于微观地操纵液体.

研究的目的:

  • 设计和演示一种新的双向声学微型.
  • 研究振荡的尖端结构对微流体流动方向和速率的影响.
  • 为了评估微在不同声频的性能.

主要方法:

  • 使用两组尖端结构 (60°/40 μm和45°/25 μm) 制造微型.
  • 在共振频率下使用压电式传感器激发尖端结构.
  • 在不同声频 (20.0 kHz和12.8 kHz) 下测量微流体流速的实验测量.
  • 整合空隙以最大限度地减少结构和微通道之间的阻尼.

主要成果:

  • 在20.0kHz时从左向右实现125μm/s的稳定流速.
  • 在12.8 kHz时,从右到左的稳定流速为85μm/s.
  • 通过激活不同组的尖端结构来证明双向微流体控制.
关键词:
声波是一种声波.这是一个双向的.这是一个微型.一个尖端的结构结构.

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结论:

  • 拟议的声学微有效地实现了双向微流体操纵.
  • 该设备易于操作,并显示出各种微流体应用的前景.
  • 振荡的尖端结构为声学微提供了一个可行的机制.