Dept. of Pathology, Keck School of Medicine, University of Southern California, 2011 Zonal Avenue, Los Angeles, CA 90089-9092, USA.
Lab Chip. 2012 Apr 24;12(10):1890-6. doi: 10.1039/c2lc20956j. Epub 2012 Apr 4.
We develop a theoretical model for a fluidic current source consisting of a via, a detour channel, and a push-up type micro-valve. The model accurately describes the non-linear behaviour of this type of device, which has been previously measured experimentally. We show how various structural parameters and material properties of the device influence the saturated flow rate and the minimum driving pressure required for the device to function as a current source. Conversely, the model can be used to design a fluidic current source with a desired saturated flow rate and low operational pressure. The present model can be straightforwardly applied to microfluidic circuits composed of many functional autoregulatory devices.
我们开发了一种由过孔、迂回通道和推顶式微阀组成的流体电流源的理论模型。该模型准确地描述了这种类型的设备的非线性行为,这种行为以前已经通过实验进行了测量。我们展示了设备的各种结构参数和材料特性如何影响饱和流量和设备作为电流源运行所需的最小驱动压力。相反,该模型可用于设计具有所需饱和流量和低工作压力的流体电流源。本模型可以直接应用于由许多功能自动调节装置组成的微流控电路。