Focused acoustic radiation for rapid sequential ejection of subwavelength droplets

Focused acoustic radiation, referred to as tonebursts, are applied to a volume of liquid to generate a set of droplets. In one embodiment, a first toneburst is applied to temporarily raise a mound or protuberance on a free surface of the fluid. After the mound has reached a certain state, at least t...

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Bibliographic Details
Main Author Stearns, Richard G
Format Patent
LanguageEnglish
Published 16.07.2024
Subjects
BASIC ELECTRIC ELEMENTS
CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
TRANSPORTING
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Summary:Focused acoustic radiation, referred to as tonebursts, are applied to a volume of liquid to generate a set of droplets. In one embodiment, a first toneburst is applied to temporarily raise a mound or protuberance on a free surface of the fluid. After the mound has reached a certain state, at least two additional toneburst can be applied to the protuberance to sequentially eject multiple bursts of multiple droplets. In one embodiment, the state of the mound can be maintained by a sustained acoustic signal, during which time multiple additional tonebursts can be applied to sequentially eject multiple bursts of multiple droplets from the mound.
Bibliography:Application Number: US202318315886