Patent ID: 8440150
Filing Date: 2013-05-14
Classification: B01F,B01L,F16K,Y10T

Abstract:
1. A device including a hydrophobic valve for liquids having an appreciable surface tension comprising magnetic particles, said device comprising at least first and second substrates each having a functionalized surface that includes at least one surface region having one of a hydrophilic and hydrophobic characteristic, wherein the functionalized surface of the first substrate comprises a patterned surface having at least first and second hydrophilic areas separated from one another by at least one hydrophobic area, wherein the first and second substrates are disposed with a distance to one another in a sandwiched, parallel fashion, in such way that said functionalized surfaces are facing one another; and a traveling magnetic field generator configured to generate a magnetic field and to controllably move the magnetic field from a boundary between the first hydrophilic area and the hydrophobic area, to the second hydrophilic area.