SEPARATION STRUCTURE

摘要

A centrifugal-based microfluidic device (1) that comprises a hydrophilic microchannel structure (2) in which there is a A) a separation microcavity I (4) that comprises i) a liquid inlet I (5), and ii) a liquid outlet I (6) that is at a level below the level of liquid inlet I (5) and above the level of the bottom (8) of the microcavity (4) thereby defining a lower part (4b) and an upper part (4a) of the microcavity (4), and B) a microconduit I (17) that has an inlet end I (16) directly connected to liquid outlet I (6), and an outlet end 1 (18) that is at a lower level than inlet end I (6). A capillary valve I (24) is associated with microconduit I (17). The flow direction through liquid outlet I (6) is directed upwards and/or liquid outlet I (6) is placed in a downwardly turned part of an inner wall of the separation microcavity (4), and/or the part of microconduit I (17) next to liquid outlet I (6)- is directed upwards.