Microscale biomolecule collection and visual screening and recycling device and method based on acoustic tweezers

The invention belongs to the technical field of acoustic flow control, and relates to a micro-nano machining process and acoustic surface wave design and test, in particular to a microscale biomolecule collection and visual screening and recycling device and method based on acoustic tweezers. The device comprises a micro-channel structure layer (100) and a substrate (200), a continuous phase solution input runner (101), a dispersed phase solution input runner (102), a micro-droplet generation runner (103), a micro-droplet conveying runner (104) and a near screening end runner (105) are arranged on the micro-runner structure layer (100); the micro-channel structure layer (100) is located on the substrate (200), and a first surface acoustic wave resonator (201), a second surface acoustic wave resonator (202) and a third surface acoustic wave resonator (203) are arranged on the substrate (200). The device is reasonable in design, realizes the generation, screening and recovery of trace biological liquid drops, a