System and method for dispensing liquids

Details System and method for dispensing liquids System and method for dispensing liquids

B - Operations, Transporting

67

D

B67D 7/08 (2010.01) B01L 3/00 (2006.01) B01L 3/02 (2006.01) G01F 25/00 (2006.01)

Patent

CA 2442978

A method for depositing a volume of fluid relative to a surface (12) to produce a droplet (10) relative to the surface (12) comprising the steps of forming a bolus of liquid (116) relative to a dispensing member (100), causing the bolus of liquid (116) to make contact with the surface (12) thereby forming a bridge of liquid (220) between the dispensing member (100) and the surface (12), and retracting only a portion of the bolus of liquid (116) to break the bridge of liquid (220) between the dispensing member (100) and the surface (12) thereby depositing a droplet (10) on the surface (12). A volume of a droplet (10) can be ajusted by forming a bridge of liquid (220) between a dispensing member (100) while leaving a remaining droplet (10) of a different volume thanthe initial droplet (10). One or more droplets (10) can be interacted with by forming a bridge of liquid (220) and a surface (12) that includes an initial drplet (10) and breaking the bridge of liquid (220) between a dispensing member (100) and a surface (12) that includes one or more of the droplet (10) or droplets (10) and drowing at least a portion of the bridge of liquid (220) into an inner volume of the dispending member (100).

L'invention concerne un procédé de dépôt d'un volume de fluide par rapport à une surface (12) pour former une gouttelette (10) par rapport à la surface (12), qui consiste à former un bol de liquide (16) par rapport à un élément de distribution (100), entraînant le bol de liquide (116) à venir au contact de la surface (12), ce qui forme un pont de liquide (220) entre l'élément de distribution (100) et la surface (12), puis à ne retirer qu'une partie du bol de liquide (116) pour rompre le pont de liquide (220) entre l'élément de distribution (100) et la surface (12), ce qui dépose une gouttelette (10) sur la surface (12). Il est possible de modifier un volume d'une gouttelette (10) en formant un pont de liquide (220) entre un élément de distribution (100) et une surface (12) qui comprend une gouttelette initiale (10) et en rompant le pont de liquide (220) tout en laissant une gouttelette (10) d'un volume différent à celui de la gouttelette initiale (10). On peut établir une interaction avec une ou plusieurs gouttelettes (10) en formant un pont de liquide (220) entre un élément de distribution (100) et une surface (12) qui comprend une ou plusieurs gouttelettes (10) et en aspirant au moins une partie du pont de liquide (220) dans un volume intérieur de l'élément de distribution (100).

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