MICROFLUIDIC DRIFTING: THREE DIMENSIONAL HYDRODYNAMIC FOCUSING OF MICROPARTICLES

In this work we present numerical simulation and experimental validation of a three-dimensional (3D) hydrodynamic microparticle focusing method based on “microfluidic drifting” technique recently developed in our group. Microfluidic drifting utilizes Dean vortical flow induced in a microfluidic curve to realize 3D hydrodynamic focusing in a single-layer planar microfluidic device. Here we show this principle can be effectively adapted to focus microparticles with size and density close to those of lymphocytes.