Droplet Microfluidics

• Droplet position control

Travelling surface acoustic wave-induced acoustic radiation force acting on the fluid-fluid interface enables on-demand, on-chip control of droplet position for sorting, capture and release.

• Droplet volume control

Travelling surface acoustic wave-induced acoustic radiation force acting on the fluid-fluid interface enables on-demand, on-chip control of droplet volume by splitting into several daughter droplets with desired volume fraction.

• In-droplet sample control

Travelling surface acoustic wave-induced acoustic streaming flow and acoustic radiation force acting on the fluid-fluid/solid-fluid interfaces enable in-droplet sample control for on-chip medium exchange and concentration.

• In-droplet chemical concentration control

Travelling surface acoustic wave-induced acoustic streaming flow enables on-demand control of in-droplet chemical concentration and production of droplet library of desired chemical concentration distribution.