Numerical Study of Particle Focusing and Concentration under the Effect of Acoustic Waves in a Microchannel

The importance of particle manipulation methods has highly risen in recent years. These methods have a widespread use in diagnosing and curing different disease such as cancers and infertility. The use of these techniques is based on the required applications. We prefer a method that contains the least side effects on biological cells and fewer limitations. Acoustophoresis is the method which we used for this purpose and it is a particle manipulation technique that has the required qualities. It means migration with sound and uses acoustic waves to manipulate the particles based on their size, density and compressibility. In this paper, we investigated the effect of acoustic waves on particle concentration in a 2-D channel. The results showed that acoustic waves cause a radiation force which directly affects the motion of particles and guides them toward the center of channel without any distraction. Using a Y-shaped channel for separating the particles would be convenient for future studies.