Abstract
Microfluidic mixing in a Lab-on-chip is one of the important topics of study with various applications including biomedicine, chemical engineering, and chaotic systems. Here, we present a method for imaging and quantifying microfluidic mixing using quantitative phase imaging techniques. Gradual mixing of solutions with different refractive index along a microfluidic channel causes changes in optical path lengths. By measuring optical phase delay images, we demonstrate the label-free imaging of microfluidic mixing and measure the local concentrations of fluids.
© 2016 Optical Society of America
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