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This paper reports a pulsatile micromixer without using any dynamic off-chip controllers and only relies on constant water-head pressure. This significantly differs from other pulsatile micromixers that use expansive, bulky controllers including high-voltage power supplies and function generators. The device is composed of self-actuated oscillator and mixer units, both of which include microfluidic...
In a microfluidic chamber, unwanted formation of air bubbles is a critical problem. Here, we present a hydrophilic strip array that prevents air bubble formation in a microfluidic chamber. The array is located on the top surface of the chamber, which has a large variation in width, and consists of a repeated arrangement of super‐ and moderately hydrophilic strips. This repeated arrangement allows...
Biochemical solutions have a wide range of hydrophilicity (contact angle and surface tension) and viscosity. A critical challenge is that microfluidic systems typically need expensive or complex pumps to control the various parallel biochemical streams. In this study, without using any pumps, we present a simple scheme that controls the ratio of the volumetric flow rate (VFR) of the parallel streams...
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