Microfluidic stepwise-waveform regulator driven by constant pressure
2018 IEEE Micro Electro Mechanical Systems (MEMS)（2018）
Abstract
This paper reports a stepwise-waveform (SW) regulator that stepwise increases or decreases pressure without any dynamic controllers but only with constant water-head pressure. The SW regulator consists of a microfluidic oscillator and a diode pump, and sequentially converts constant pressure to pulsatile and then to stepwise pressure. The pressure increment and duration time were independently tuned in the range of 215-431 Pa and 26-181 s, respectively. With connection of an additional valve to the regulator, the SW regulator generated SWs of flow rate, shear stress, and chemical concentration.
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Key words
microfluidic stepwise-waveform regulator,constant pressure,dynamic controllers,constant water-head pressure,SW regulator,microfluidic oscillator,pressure increment,diode pump,pulsatile pressure,stepwise pressure,flow rate,shear stress,chemical concentration,pressure 215.0 Pa to 431.0 Pa,time 26.0 s to 181.0 s
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