FLUIDIC SYSTEM, USE, AND METHOD FOR OPERATING THE SAME

摘要

A fluidic system having a first volume, a second volume and a membrane geometrically separating the two volumes, which has an open-pore microstructure for the passage of a first medium and a second medium. There is a contact angle (θ) between the interface of the media and the pore surface. A first electrical field in the region of the membrane and a first electromagnetic radiation and a first heating of the membrane define a first state (Z1), in which the membrane is not wetted or is less wetted by the first medium and is more heavily wetted by the second medium such that a first contact angle θ1>90° is formed between the pore surface and the interface. The first medium and the second medium and the pore surface have a surface energy of which at least one surface energy can be reversibly changed in such a way that a second contact angle θ2<θ1 occurs between the pore surface and the interface in a second state (Z2).

主权项

1. A fluidic system comprising: a first volume, a second volume, and a membrane geometrically separating the two volumes, which provides an open-pore microstructure with a pore surface for passage of a first medium and a second medium, between which a boundary surface is formed, while a contact angle exists between the boundary surface and the pore surface,
wherein electrodes for imposing an electric field in a region of the membrane and/or an electromagnetic radiation source acting on the membrane and/or means for heating or cooling the membrane, wherein the membrane in a first state Z1 with a first electric field E1 and a first electromagnetic radiation exposure S1 and a first temperature T1 has a pore surface which is not wetted or less wetted by the first medium and more heavily wetted by the second medium so that a first contact angle θ1>90° is formed between the pore surface and the boundary surface in the first medium, and wherein the first medium and the second medium and the pore surface have a surface energy, of which at least one surface energy can be changed reversibly in dependence on the electric field or by electromagnetic radiation exposure or temperature change so that in a second state Z2 with a second electric field E2≠E1 and/or a second electromagnetic radiation exposure S2≠S1 and/or a second temperature T2≠T1 a second contact angle θ2<θ1 is formed between the pore surface and the boundary surface.