Abstract: The invention concerns a system for controlling the temperature of a microfluidic chip comprising a Peltier module (10) having a cold face (10a) and a hot face (10b) and connected to a power generator (11), a thermal regulation device (12) having a thermal regulated face (12a) applied against one of the faces of the Peltier module, at least one temperature sensor (17) being applied on the other face of the Peltier module and being intended to be applied against one of the main faces of a microfluidic chip and control means (18) configured to control the power generator (11) of the Peltier module depending on a temperature of the face of the Peltier module provided with said at least one temperature sensor and at least one temperature setting information selected from a target temperature and a target temporal temperature profile to regulate a temperature of the face of the Peltier module to said temperature setting information.

Abstract: The invention relates to a method for determining the electrophoretic velocity of droplets of a first fluid in a second fluid, the method comprising: providing a first capillary (3?) having an outlet positioned in a first channel (3); providing a stream of the first fluid in the first capillary and providing a stream of the second fluid in the first channel external to the first capillary, so as to generate droplets of the first fluid in the second fluid at the outlet of the first capillary; transporting the droplets to an observation area (200) in a second channel (11); applying an electric field to the observation area of the second channel; and measuring the velocity of the droplets in the observation area. The invention also relates to a device for determining the electrophoretic velocity of droplets of a first fluid in a second fluid.

Abstract: Disclosed is a method of evaluating and optimizing a micro model prior to fabrication of the micro model. The method comprises obtaining a design document describing a geometry of a proposed micro model and abstracting the geometry into a simplified representation of said geometry, such as a pore network representation. Performance of the proposed micro model based on the abstracted geometry is simulated and based on this, the proposed micro model is evaluated and/or optimized.

Abstract: A method of manufacturing a series of capsules (1A) comprising a core (3), and a gelled envelope (5) completely encapsulating the core and comprising at least two external phases (5A, 5B), wherein the gelled envelope has a external surface comprising at least two distinct portions (7A, 7B) formed respectively by the two external phases, and comprising the following steps: conveying a first flow (F1) that is intended to form the core, and a second flow (F2) of at least the two external phases that are intended to form the gelled envelope, wherein each external phase contains a liquid polyelectrolyte that is able to gel, at least one of the two external phases comprising a coloring agent, while the second flow surrounds the first flux about an axis (D2); successive formation of a plurality of liquid bodies (57) comprising a drop (107), and a film coating (109) coating the drop and having the two external phases, wherein the film has on its external surface at least two portions (109A, 109B) formed by the two

Abstract: A method of manufacturing a series of capsules (1A) comprising a core (3), and a gelled envelope (5) completely encapsulating the core and comprising at least two external phases (5A, 5B), wherein the gelled envelope has a external surface comprising at least two distinct portions (7A, 7B) formed respectively by the two external phases, and comprising the following steps: conveying a first flow (F1) that is intended to form the core, and a second flow (F2) of at least the two external phases that are intended to form the gelled envelope, wherein each external phase contains a liquid polyelectrolyte that is able to gel, at least one of the two external phases comprising a coloring agent, while the second flow surrounds the first flux about an axis (D2); successive formation of a plurality of liquid bodies (57) comprising a drop (107), and a film coating (109) coating the drop and having the two external phases, wherein the film has on its external surface at least two portions (109A, 109B) formed by the two

Abstract: Each capsule comprises a liquid core (14) and a gelled shell (16) comprising a gelled polyelectrolyte completely encapsulating the liquid core (14) at the periphery thereof. The gelled shell (16) is suitable for retaining the liquid core (14) when the capsule (12) is immersed in a gas. The liquid core (14) comprises an intermediate drop (18) of an intermediate phase, the intermediate phase being placed in contact with the gelled shell (16), and at least one internal drop (20) of an internal phase placed in the intermediate drop (18). The ratio of the volume of the core (14) to the volume of the gelled shell (16) is greater than 2, advantageously is greater than 50.

Abstract: A dispersion including a plurality of bodies dispersed in a continuous phase. Each dispersed body including an internal drop formed with an internal phase miscible with the continuous phase, the internal drop (16) receiving an active product. Each dispersed body including, around the internal drop, a membrane formed with an intermediate phase immiscible with the continuous phase and totally surrounding the internal drop. The ratio R1 of the average thickness (e) of the membrane over the average transverse dimension (Dc) of the active volume delimited by the internal drop and the membrane is greater than 0.05, and is advantageously less than 0.5. The ratio R2 of the partition coefficient of the active product between the intermediate phase forming the membrane and the internal phase forming the internal drop over the viscosity of the membrane is less than 1 s?1·Pa?1.

Abstract: A method includes separately conveying a first liquid solution (36) containing the first material and a second liquid solution (46) containing a liquid polyelectrolyte. The method includes forming of a series of drops (78) at the outlet (50), each drop (78) including a central core (80) formed from a first solution (36) and a peripheral film (82) formed from a second solution. The method includes immersing each drop (78) in a gelling solution (70) containing a reagent capable of reacting with the polyelectrolyte of the film (82) so as to form the gelled casing. The second solution (40) contains at least one surfactant before the former contacts the first solution (36).

Abstract: A kit comprising two separate compositions (A) and (B). Composition (A) is an aqueous gel with a viscosity of less than 11 Pa·s and contains at least one capsule including: a liquid core with at least one active ingredient and a gelled envelope totally encapsulating the liquid core. The gelled envelope includes at least one polyelectrolyte in the gelled state. Composition (B) includes a depolymerizing agent.

Abstract: A dispersion including a plurality of bodies dispersed in a continuous phase. Each dispersed body including an internal drop formed with an internal phase miscible with the continuous phase, the internal drop (16) receiving an active product. Each dispersed body including, around the internal drop, a membrane formed with an intermediate phase immiscible with the continuous phase and totally surrounding the internal drop. The ratio R1 of the average thickness (e) of the membrane over the average transverse dimension (Dc) of the active volume delimited by the internal drop and the membrane is greater than 0.05, and is advantageously less than 0.5. The ratio R2 of the partition coefficient of the active product between the intermediate phase forming the membrane and the internal phase forming the internal drop over the viscosity of the membrane is less than 1 s?1·Pa?1.

Abstract: Each capsule comprises a liquid core (14) and a gelled shell (16) comprising a gelled polyelectrolyte completely encapsulating the liquid core (14) at the periphery thereof. The gelled shell (16) is suitable for retaining the liquid core (14) when the capsule (12) is immersed in a gas. The liquid core (14) comprises an intermediate drop (18) of an intermediate phase, the intermediate phase being placed in contact with the gelled shell (16), and at least one internal drop (20) of an internal phase placed in the intermediate drop (18). The ratio of the volume of the core (14) to the volume of the gelled shell (16) is greater than 2, advantageously is greater than 50.

Abstract: A method includes separately conveying a first liquid solution (36) containing the first material and a second liquid solution (46) containing a liquid polyelectrolyte. The method includes forming of a series of drops (78) at the outlet (50), each drop (78) including a central core (80) formed from a first solution (36) and a peripheral film (82) formed from a second solution. The method includes immersing each drop (78) in a gelling solution (70) containing a reagent capable of reacting with the polyelectrolyte of the film (82) so as to form the gelled casing. The second solution (40) contains at least one surfactant before the former contacts the first solution (36).

Abstract: The present invention generally relates to emulsions such as multiple emulsions, and to methods and apparatuses for making emulsions, and techniques for using the same. A multiple emulsion generally describes larger droplets that contain one or more smaller droplets therein which, in some cases, can contain even smaller droplets therein, etc. Emulsions, including multiple emulsions can be formed in certain embodiments with generally precise repeatability, and can be tailored to include any number of inner droplets, in any desired nesting arrangement, within a single outer droplet. In addition, in some aspects of the invention, one or more droplets may be controllably released from a surrounding droplet.

Abstract: The present invention generally relates to emulsions such as multiple emulsions, and to methods and apparatuses for making emulsions, and techniques for using the same. A multiple emulsion generally describes larger droplets that contain one or more smaller droplets therein which, in some cases, can contain even smaller droplets therein, etc. Emulsions, including multiple emulsions can be formed in certain embodiments with generally precise repeatability, and can be tailored to include any number of inner droplets, in any desired nesting arrangement, within a single outer droplet. In addition, in some aspects of the invention, one or more droplets may be controllably released from a surrounding droplet.