Abstract: A process for handling an element consisting of a first fluid transported by a second fluid that is immiscible with the first fluid in a cavity having at least one wall of which is made of a deformable material. The second fluid and the element of the first fluid are introduced into the cavity. A local deformation of the deformable material of the cavity is ordered and at least one other portion of the deformable material of the cavity not being deformed. A portion of the deformable material forming the cavity is locally deformed to at least partially obstruct the passage of the element introduced into the cavity without obstructing the passage of the second fluid. The element in the cavity is moved to the outside of the deformed portion of the cavity.

Abstract: A device for configuring a multiphase fluid consisting of at least two immiscible phases on either side of separation surfaces. A chamber to contain a multiphase fluid. A temperature gradient generator to generate a temperature gradient along the chamber to vary the surface tension of the separation surfaces along the chamber and to cause at least one of the phases of the multiphase fluid to move. An extractor to extract the multiphase system. Preferably, the temperature gradient generator includes at least one electrical resistor formed on the surface of the chamber to provide a variable heat density along the wall of the chamber.