lab-chip

A mathematical model of the process of separating suspended microparticles in a dispersed mixture within a 2-branched channel of a microfluidic lab-chip under the influence of an acoustic field has been developed. The model is implemented in the environment of COMSOL Multiphysics, using thermoviscous acoustics, creeping flow, particle tracking in a fluid flow, and fluid-particle interaction multiphysics interfaces.

The article presents the development and analysis of the models of various IDT designs and for the acoustophoretic control of microparticles in of lab chip microchannels. The novelty of the work consists in the development of mathematical models for new configurations of IDT, suitable for focusing, sorting and concentrating of heterogeneous microparticles. The developed models are implemented in the COMSOL environment, which allows the designer to use them for the calculation of the specified IDT structures for real acoustofluidic lab-chips.