Open AccessParticle Concentration Distribution Control Based on Shear Rate Gradient and Marangoni Convection in Microchannel
Author(s) -
Jinxin Shen,
Xiangjun Zhang,
Hao Zhong,
Wenjun Cheng,
Yong Li
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/538/1/012057
Subject(s) - microchannel , microfluidics , marangoni effect , materials science , mechanics , particle (ecology) , flow (mathematics) , volumetric flow rate , shear flow , temperature gradient , convection , nanotechnology , physics , meteorology , oceanography , geology
The application of the microfluidic chip to the immunoassay has many advantages such as high efficiency, low cost, and high integration. It is of great significance to understand the flow characteristics of fluids in microchannel, which can improve the efficiency and accuracy of detection. In this paper, the effects of microchannel structure on the particle concentration distribution in two-phase flow and the flow behaviour of near-wall layer are studied by microfluidic observation technique. Also, a kind of microchannel structure was designed to increase the particle concentration in the front-end of microfluidic.