Patent ID: 7557342

Claim:
An electrospray system comprising: a first reservoir configured to store a first fluid including a first ionizable molecule; a first actuator disposed in communication with the first reservoir configured to generate an ultrasonic pressure wave through the first fluid; an ionization source configured to ionize the first ionizable molecule to form a ionized first molecule; a second reservoir configured to store a second fluid including a second ionizable molecule, wherein a separating layer is disposed between the first reservoir and the second reservoir; a second ionization source configured to ionize the second ionizable molecule to form a second ionized molecule; and a first set of ejector structures including at least one ejector nozzle configured to eject the first fluid in response to the ultrasonic pressure wave, wherein each ejector structure is configured to focus the acoustic pressure wave at a tip of the ejector nozzle, and wherein the first reservoir is disposed between the first actuator and the first set of ejector structures, wherein the first actuator and the ionization source are configured to form a plurality of ionized first molecules from the first fluid, wherein the ionized first molecules are ejected from the ejector nozzles of the first set of ejector structures upon activation of the first actuator and the ionization source.