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Active porous valves for plug actuation and plug flow manipulation in open channel fluidics

机译：用于插头致动和插头流动操作的有源多孔阀

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摘要

We present an alternative tool for plug actuation and valving in open-channel fluidics. Initially the porous and hydrophobic fluidic walls are sticky and the plug is pinned; the valve is "off". By applying pressure at the rear face (backpressure), the walls become slippery, the plug is depinned and moves along the fluidic; the valve is "on". The switching is reversible, in that if the backpressure is set off, the plug pins back again, and the valve is turned "off". We demonstrate the basic principles of the tool, and we provide experimental results on the minimum backpressure to leverage the actuation and the valve switching for fluidics of various crossq-sections. Large crossq-section fluidics may facilitate the control of a wide range of liquid volumes, at different operating parameters. For valves with small cross sections, the adequate backpressure is ultra-low (less than 10 mbar) corresponding to respectively ultra-low operation energy demands. In advance, for the small crossq-section fluidics the backpressure is independent of the droplet volume and tilt angle, thus providing an attractive, versatile actuation and valving tool for low cost open channel fluidics.
机译：我们提供了一种用于在开放式流体中的插头致动和阀门的替代工具。最初，多孔和疏水流体壁是粘性的，插头固定;阀门是“关闭”。通过在后表面（背压）上的压力，壁变滑，塞子被拆卸并沿着流体移动;阀门是“开启”。切换是可逆的，因为如果背压被熄灭，则再次堵塞插头，阀门“关闭”。我们展示了该工具的基本原理，我们提供了对最小背压的实验结果，以利用致动和阀门切换各种Crossq部分的流动性。大型Crossq-段流体可以促进在不同的操作参数下控制各种液体体积。对于具有小横截面的阀门，足够的背压是超低（小于10毫巴），对应于超低操作能量需求。事先，对于小的Crossq-段流体，背压与液滴体积和倾斜角度无关，从而为低成本开放通道流体提供有吸引力，多功能的致动和阀门工具。

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  • 来源
    《RSC Advances》 |2015年第126期|共7页
  • 作者

    Vourdas N.; Dalamagkidis K.; Stathopoulos V. N.;

  • 作者单位

    Technol Educ Inst Sterea Sch Technol Applicat Ellada Psahna Greece;

    Technol Educ Inst Sterea Sch Technol Applicat Ellada Psahna Greece;

    Technol Educ Inst Sterea Sch Technol Applicat Ellada Psahna Greece;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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