US 11,986,848 B2
Acoustic droplet ejection
Wayne Bowen, Royston (GB); and David Pooley, Royston (GB)
Assigned to TTP Plc, Royston (GB)
Appl. No. 16/966,168
Filed by TTP Plc, Royston (GB)
PCT Filed Jan. 31, 2019, PCT No. PCT/GB2019/050269
§ 371(c)(1), (2) Date Jul. 30, 2020,
PCT Pub. No. WO2019/150117, PCT Pub. Date Aug. 8, 2019.
Claims priority of application No. 1801712 (GB), filed on Feb. 2, 2018.
Prior Publication US 2021/0039128 A1, Feb. 11, 2021
Int. Cl. B05B 17/06 (2006.01); B01J 19/00 (2006.01); B01L 3/02 (2006.01); B41J 2/14 (2006.01); H10N 30/20 (2023.01)
CPC B05B 17/0615 (2013.01) [B01J 19/0046 (2013.01); B01L 3/0241 (2013.01); B41J 2/14008 (2013.01); H10N 30/20 (2023.02); B01L 2400/0436 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An acoustic droplet ejection apparatus for ejecting droplets, the apparatus comprising:
an acoustic actuator; and
a fluid well having a base and at least one side wall,
wherein the actuator is arranged to couple acoustic energy into the fluid well through the side wall,
wherein adjusting a position of the actuator relative to a surface of a fluid contained in the fluid well adjusts a size of a focal point of the actuator to thereby adjust a droplet size.