Abstract: Process for manufacturing a plastic-based cellular structure comprising: a step (a) during which parallel lamellae of a composition based on at least one thermoplastic polymer (P) chosen from amorphous and semi-crystalline polymers are continuously extruded through a die containing a plurality of parallel slots; a step (b) during which, on exiting the die and in successive alternations, the spaces between two adjacent lamellae are subjected to an injection of a fluid (f) and to a vacuum, the two sides of a same lamella being, for one side, subjected to the action of the fluid (f) and, for the other side, to the action of the vacuum, and inversely during the following alternation, in order to produce deformation of the lamellae and to weld them in pairs with formation, in a plane approximately parallel to the extrusion direction, of a cellular structure whose constituent cells extend perpendicular to the extrusion direction; a step (c) during which the cellular structure obtained in step (b) is drawn perpen

Abstract: The crystallization of chemical species/polymorphs comprises forming droplets of a solution of a substance with optionally different concentrations of said substance in an inert phase; producing and storing the droplets in at least one storage microchannel (1); forming crystals in all droplets; increasing the temperature in order to induce the dissolution of at least a portion of the crystals in at least some droplets; and analyzing the crystallization and dissolution process.

Abstract: Plane structure composed of a cohesive assembly of contiguous cellular cells having any cross section and essentially parallel walls from one cell to another, characterized in that the walls of the cells comprise at least two portions based on different polymeric compositions, the junction between said portions being substantially parallel to the plane of the structure.

Abstract: Cartridge for the treatment of a gas by reaction with a reactive substance, comprising a cohesive assembly of alveolate cells that are at least partly filled with the reactive substance, the alveolate cells possessing one part of their wall which is permeable to the gas and impermeable to the reactive substance, said wall part being intended to be in contact with the gas.

Abstract: The crystallization of chemical species/polymorphs comprises forming droplets of a solution of a substance with optionally different concentrations of said substance in an inert phase; producing and storing the droplets in at least one storage microchannel (1); forming crystals in all droplets; increasing the temperature in order to induce the dissolution of at least a portion of the crystals in at least some droplets; and analyzing the crystallization and dissolution process.

Abstract: Microfluidic devices having a membrane allowing evaporation are useful for conducting a measurement or observation of compounds introduced therein.

Abstract: Process for manufacturing a plastic-based cellular structure comprising: a step (a) during which parallel lamellae of a composition based on at least one thermoplastic polymer (P) chosen from amorphous and semi-crystalline polymers are continuously extruded through a die containing a plurality of parallel slots; a step (b) during which, on exiting the die and in successive alternations, the spaces between two adjacent lamellae are subjected to an injection of a fluid (f) and to a vacuum, the two sides of a same lamella being, for one side, subjected to the action of the fluid (f) and, for the other side, to the action of the vacuum, and inversely during the following alternation, in order to produce deformation of the lamellae and to weld them in pairs with formation, in a plane approximately parallel to the extrusion direction, of a cellular structure whose constituent cells extend perpendicular to the extrusion direction; a step (c) during which the cellular structure obtained in step (b) is drawn perpen

Abstract: Cartridge for the treatment of a gas by reaction with a reactive substance, comprising a cohesive assembly of alveolate cells that are at least partly filled with the reactive substance, the alveolate cells possessing one part of their wall which is permeable to the gas and impermeable to the reactive substance, said wall part being intended to be in contact with the gas.

Abstract: Plane structure composed of a cohesive assembly of contiguous cellular cells having any cross section and essentially parallel walls from one cell to another, characterized in that the walls of the cells comprise at least two portions based on different polymeric compositions, the junction between said portions being substantially parallel to the plane of the structure.