PT - JOURNAL ARTICLE AU - GwangSik Park AU - Dongsik Han AU - GwangSu Kim AU - Seungwoo Shin AU - Kyoohyun Kim AU - Je-Kyun Park AU - YongKeun Park TI - Visualization and label-free quantification of microfluidic mixing using quantitative phase imaging AID - 10.1101/137117 DP - 2017 Jan 01 TA - bioRxiv PG - 137117 4099 - http://biorxiv.org/content/early/2017/05/12/137117.short 4100 - http://biorxiv.org/content/early/2017/05/12/137117.full AB - Microfluidic mixing plays a key role in various fields, including biomedicine and chemical engineering. To date, although various approaches for imaging microfluidic mixing have been proposed, they provide only quantitative imaging capability and require for exogenous labeling agents. Quantitative phase imaging techniques, however, circumvent these problems and offer label-free quantitative information about concentration maps of microfluidic mixing. We present the quantitative phase imaging of microfluidic mixing in various types of PDMS microfluidic channels with different geometries; the feasibility of the present method was validated by comparing it with the results obtained by theoretical calculation based on Fick’s law.