This paper describes a flow switching technique applicable to centrifugal micro-fluidic platforms, using a regulated stream of compressed gas. This pneumatic flow switching technique allows for flow control at a T-shaped junction between one inlet channel and two outlet channels. This technique provides a noncontact, robust, and efficient method for switching the direction of fluid flow while a disk is rotating at relatively low frequencies. The switching operation can be implemented reproducibly with applied gas flow rates between 17 and 58 L min~(-1) and rotational frequencies between 400 rpm (6.6 Hz) and 1200 rpm (20 Hz).
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机译：本文介绍了一种适用于离心微流体平台的流量转换技术，它使用了压缩气体的调节流。这种气动流量切换技术允许在一个入口通道和两个出口通道之间的T形连接处进行流量控制。该技术提供了一种非接触，耐用且有效的方法，可在磁盘以相对较低的频率旋转时切换流体的流动方向。切换操作可以在17至58 L min〜（-1）的施加气体流量和400 rpm（6.6 Hz）至1200 rpm（20 Hz）的旋转频率下可重复实现。
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