Improvement on capillary pressure barrier

摘要

To provide a microfluidic apparatus for controlling the shape and/or position of a movable fluid-fluid meniscus.SOLUTION: The apparatus comprises a volume 152 for containing and directing fluid 103, with a fluid flow direction 154 being a downstream direction, including a meniscus 104 and the volume having at least a first structure defining a capillary pressure barrier 105 for shaping and aligning the meniscus, the volume being a microfluidic channel having inner surfaces 102 facing fluid including side walls or a top or bottom substrate, the capillary pressure barrier and the meniscus defining a boundary dividing it into at least two or more sub-volumes.SELECTED DRAWING: Figure 1