The application discloses a liquid droplet fusion microfluidic method based on a liquid droplet fusion microfluidic device regulated by focused surface acoustic
waves, and the device comprises an
interdigital transducer, two focusing arc electrodes arranged on the
interdigital transducer, and a microfluid channel
system bonded on the upper part of the
interdigital transducer. The focusing arc electrodes are matched with the microfluid channel
system, and the microfluid channel
system is provided with a first collection outlet joint, a first dispersed phase inlet joint, a continuous phase inlet joint, a second dispersed phase inlet joint and a second collection outlet joint. The focusing surface acoustic
waves generated by the interdigital
transducer and the liquid droplet microfluid channel structure are used to flexibly realize the fusion control of liquid droplets with different sizes in the microfluid channel. The symmetrical structure is adopted to enhance the durability and
repeatability of the microfluid device. The method is not only suitable for the fusion control between microdroplets, but also suitable for the fusion control between
microbubbles and between microdroplets and
microbubbles. The surface acoustic
waves are non-contact and have good biological compatibility, and thus meet the needs of the liquid droplet fusion technology in the fields of
biochemistry and
medical treatment.