Analysis of resistance characteristics of liquid flow in microfluidic channels

Abstract

In order to investigate the resistance characteristics of liquid flow in microfluidic channels, the mathematical models of liquid flow resistance in microfluidic channels are established in this paper. The microfluidic channel samples with different parameters are designed and fabricated by using soft lithography technology. The effects of channel parameters of channel aspect ratio channel equivalent diameter d l and channel length/diameter ratio l/d l on liquid flow resistance are analysed and tested through experiments. This paper reveals the flow resistance performances in microfluidic channels and provides research basis for improving the flow characteristics and optimizing the microfluidic channel structures.