Improvements relating to capillary pressure barriers
Abstract
The invention relates to a device for controlling the shape and/or position of a movable fluid-fluid meniscus, comprising a volume for containing and guiding a fluid comprising the meniscus, the filling direction being a downstream direction, and the volume having at least one first structure forming a capillary pressure barrier, the meniscus tends to align along said barrier, the capillary pressure barrier and meniscus forming a boundary between at least two sub-volumes in the volume, in which (a) an angle of greater than 90 DEG on the downstream side of the capillary pressure barrier is formed at both ends with the wall of the volume, without providing deliberate fluid alignment along the capillary pressure barrier that reduces the stability of the capillary pressure barrier to stabilize the capillary pressure barrier; and/or (b) wherein the capillary pressure is stabilized by providing a tensile barrier at a distance shorter than the maximum tensile distance of the fluid-fluid meniscus when aligned along the capillary pressure barrier in the absence of the tensile barrier, (c) stabilizing the capillary pressure barrier by forming, at one end, an angle with the wall of the volume greater than 90 DEG on the downstream side of the capillary pressure barrier, and at the other end is stabilized by providing a tensile barrier at a distance shorter than the maximum tensile distance of the fluid-fluid meniscus when aligned along the capillary pressure barrier in the absence of the tensile barrier; wherein the tensile barrier is shaped such that the at least one directional element is perpendicular to the capillary pressure barrier.
Inventors 3
- Paul Vulto Aachen author as filed: Vulto, Paul
- Sebastiaan J. Trietsch Aachen author as filed: Trietsch, Sebastiaan Johannes
- Yildirim, Ender
Inventors are linked to an Aachen author when surname and first name match exactly one author.
Applicants
- 莱顿大学
- Univ Leiden GBS Leiden
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