公开(公告)号：US11110453B2

公开(公告)日：2021-09-07

申请号：US16492334

申请日：2017-04-07

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Alexander Govyadinov ,  Adam Higgins ,  Pavel Kornilovich

IPC: B01L3/00

Abstract: The present disclosure is drawn to microfluidic devices. In one example, a microfluidic device can include a microfluidic channel. A vent chamber can be in fluid communication with the microfluidic channel. A capillary break can be located between the microfluidic channel and the vent chamber. The capillary break can include a tapered portion and a narrowed opening with a smaller width than a width of the microfluidic channel. A vent port can vent gas from the vent chamber. The vent port can be located a distance away from the capillary break so that a fluid in the capillary break does not escape through the vent port.