Patent ID: 11890870
Assignee: LABCYTE INC.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method of ejecting a droplet from a reservoir containing a non-Newtonian fluid by an acoustic droplet ejector, the method comprising:
applying focused acoustic energy in a first pattern comprising a first tone burst segment to a fluid surface of the non-Newtonian fluid to generate a leading lobe and a filament from the fluid surface without separating the filament from the leading lobe or the fluid surface; and
applying focused acoustic energy in a second pattern comprising a second tone burst segment and a third tone burst segment to the leading lobe to eject a droplet by separating the leading lobe from the filament to form the droplet, wherein the filament comprises at least one bead of fluid, and the second pattern of focused acoustic energy prevents the at least one bead of fluid from breaking into one or more additional droplets.