Method and Apparatus for Freezing Dispensed Droplets of Liquid
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United States of America Patent
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Issued Date -
Dec 7, 2023
app pub date -
Aug 8, 2023
filing date -
Jun 20, 2018
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Abstract
A method and apparatus for freezing a liquid droplet includes dispensing, by a liquid dispenser, a droplet of liquid into a fluid chamber containing a freezing liquid. The droplet of liquid is allowed to dwell in the freezing liquid for at least a predetermined dwell time so that the droplet of liquid freezes to a frozen droplet. The method and apparatus further includes injecting, by a gas injector, a stream of gas transversely to a surface of the freezing liquid at about where the frozen droplet is located along the surface of the freezing liquid contained in the fluid chamber so that the frozen droplet sinks in the freezing liquid.
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