Fig. 1

The ultrasonic emulsification system composed of (i) recirculating main tube including oil droplets in water solvent, (ii) oil–water segmented flow from the pre-processing microfluidic device, and an ultrasonic emulsification equipment.

The ultrasonic emulsification system composed of (i) recirculating main tube including oil droplets in water solvent, (ii) oil–water segmented flow from the pre-processing microfluidic device, and an ultrasonic emulsification equipment.