US 11,666,900 B2
Motion controlling mechanism, liquid discharging nozzle, microdroplet generating device and method, liquid driving mechanism and method, microdroplet generating method, and surface processing method of liquid discharging nozzle
Guang-Ji Sheng, Beijing (CN)
Assigned to Sniper (Suzhou) Life Technology Co., Suzhou (CN)
Appl. No. 16/964,599
Filed by Sniper (Suzhou) Life Technology Co, Ltd., Jiangsu (CN)
PCT Filed Jan. 24, 2019, PCT No. PCT/CN2019/072926
§ 371(c)(1), (2) Date Jul. 24, 2020,
PCT Pub. No. WO2019/144894, PCT Pub. Date Aug. 1, 2019.
Claims priority of application No. 201810070377.2 (CN), filed on Jan. 24, 2018; and application No. 201810884995.0 (CN), filed on Aug. 6, 2018.
Prior Publication US 2021/0053046 A1, Feb. 25, 2021
Int. Cl. B01L 3/02 (2006.01)
CPC B01L 3/0241 (2013.01) [B01L 3/0286 (2013.01); B01L 2400/0433 (2013.01)] 19 Claims
 
1. A microdroplet generating method, comprising steps of:
S201, providing a liquid discharging nozzle having an outlet end and storing a first liquid therein and providing a microdroplet container storing a second liquid therein and having an opening, wherein the first liquid and the second liquid are any two immiscible liquids or any two liquids having an interfacial reaction therebetween;
S202, inserting the outlet end of the liquid discharging nozzle below the liquid surface of the second liquid through the opening of the microdroplet container;
S203, controlling the outlet end of the liquid discharging nozzle to move below the liquid surface of the second liquid, while discharging the first liquid from the outlet end of the liquid discharging nozzle, so that the first liquid discharged from the outlet end of the liquid discharging nozzle forms a droplet attached to the outlet end of the liquid discharging nozzle, wherein the outlet end of the liquid discharging nozzle is instantaneously accelerated to such a value of instantaneous acceleration that the droplet is instantaneously detached from the outlet end of the liquid discharging nozzle, thereby forming a microdroplet below the liquid surface of the second liquid.