Abstract: Organic solid three-dimensional polymeric foams, a process for preparing the same, and use thereof, the foams includes a solid continuous phase and pores, wherein the foams have a pore size ranging from 50 nm to 200 ?m and a volumetric fraction of the solid continuous phase is from 0.1 to 60%, with respect to the total volume of the foams, and a polydispersity index from 1 to 30%, the foams being ordered over a volume of at least 100 pores.

Abstract: A microfluidic device comprising: —a first wall comprising a first substrate on which a plurality of closed patterns is grafted, —a second wall, facing the first wall, comprising a second substrate, —a plurality of nucleic acids grafted either on the first substrate or on the second substrate, wherein each nucleic acid comprises a barcode that encodes the position of the nucleic acid on said first or second substrate, wherein at least the plurality of closed patterns or the second substrate is made of an actuatable hydrogel which is swellable between a retracted state and a swollen state in which the closed patterns and the second substrate come into contact.

Abstract: The present invention to freeze-dried monodisperse microbubbles. The invention also relates to a process for preparing said microbubbles using microfluidic techniques. The microbubbles according to the present invention show interesting properties, making them particularly useful in applications that require monodispersity of the microbubbles.

Abstract: A process for evaluating efficacy of a deodorant product includes: introducing sweat into a main channel formed in a fluidic device satisfying particular requirements; measuring a flow rate of the sweat in the main channel and transmitting the flow rate to a controller; imposing a pressure set point on the pressure actuator by closed-loop control so the flow rate of the sweat in the main channel is controllable; contacting the sweat and a deodorant product and reacting the sweat and the deodorant product with each other, the deodorant product being provided in a particular manner, wherein while the sweat and the deodorant product react with each other, the flow rate of the sweat in the main channel is maintained at substantially zero; and determining at least one of a physicochemical parameter and a biological parameter of a product of the reaction between the sweat and a the deodorant product.

Abstract: A portable diagnostic device for performing the diagnosis of pathogens, such as viruses, bacteria, microorganisms, etc., by rapidly detecting their nucleic acids in a biological sample to be tested. Also, the use of the portable diagnostic device and the methods for detection of at least one nucleic acid sequence of interest implemented with the aid of the portable diagnostic device.

Abstract: The present invention relates to systems and methods for manipulating droplets within a high through put microfluidic system.

Abstract: Organic solid three-dimensional polymeric foams, a process for preparing the same, and use thereof, the foams includes a solid continuous phase and pores, wherein the foams have a pore size ranging from 50 nm to 200 ?m and a volumetric fraction of the solid continuous phase is from 0.1 to 60%, with respect to the total volume of the foams, and a polydispersity index from 1 to 30%, the foams being ordered over a volume of at least 100 pores.

Abstract: A microfluidic device and method for producing and collecting single droplets of a first fluid, the device including a microfluidic platform having at least a droplet microchannel wherein is produced a flow of single droplets of the first fluid dispersed in a second fluid immiscible with the first fluid, the droplet microchannel having at least one inlet extremity and at least one outlet extremity for distributing the flow of droplets, the device further including: a collection device including a plurality of receiving areas adapted to collect at least one of the droplets, elements for changing the relative position of the collection device and the outlet of the microfluidic platform, elements for controlling the flow of droplets, and elements for synchronizing the flow of droplets at the outlet of the droplet microchannel and the relative movement of the collection device with regards to the microfluidic platform.

Abstract: The present invention concerns an in vitro system for evaluating the effectiveness of a deodorant product comprising a fluidic device (3) comprising a main channel (4), a reservoir (9) suitable for containing sweat (5) and a gaseous phase, separated by an interface at a height h1, at least one connecting channel (10) connected to a reservoir (9) and to an inlet of a main channel (4) and a pressure actuator (6), characterised in that it also comprises a flowmeter (7) and a closed-loop feedback controller (8), the main channel (4) having an opening (11) formed by the wall of same at one end, at a height h2, said height h1 being strictly different from h2.

Abstract: A device for diagnosis by DNA comprises: a porous substrate comprising at least: an area for depositing a sample, the sample comprising at least one target compound; a plurality of channels positioned in the thickness of the porous substrate; an area, referred to as the “diagnostic area”, comprising at least one reactive compound suitable for reacting with a so-called target compound; an area for depositing a carrier vector suitable for being transported by capillarity into all of areas and channels: each of the areas being linked to the others by at least one element chosen from a channel and an area, a means for locally conditioning the temperature of the diagnostic area.

Abstract: The present invention lies within the field of colloidal assemblies and relates to a system for producing solid clusters of microparticles, characterized in that it comprises at least: a fluidic device comprising at least: an element for producing primary droplets, comprising an outlet of width l1 and a main channel for forming solid clusters, having a main axis, of height h2 and comprising an inlet of width l2; said element for producing primary droplets being connected to said inlet of said main channel, h1 being less than h2, so as to form a step between said element for producing primary droplets and said main channel and l1 being strictly less than l2; a system of physical initiation of polymerization capable of initiating polymerization in said main channel.

Abstract: The invention relates to a method which comprises emitting ultrasound into a liquid mixture containing first and second reagents in separate phases initially separated by a liquid precursor-gas barrier, the ultrasound having a high enough energy level to vaporize the precursor gas, such as to contact the reagents and thus to activate a chemical reaction therebetween.

Abstract: A microchannel formed at the interface of two layers of material, at least one of the two materials being a substrate. A volume of the microchannel contains a film of polymer fixed by covalent bonding to the substrate layer. The film of polymer being formed from a hydrogel material susceptible to undergoing changes in volume under the action of an external stimulus. The hydrogel polymer is chosen from those which are sensitive to changes in temperature, light, electrical field or pH. A method for producing the microchannel.

Abstract: A method for storing and concentrating at least one non-volatile compound contained in a fluid. The fluid additionally includes at least one volatile compound. The fluid is injected into a porous substrate for at least one volatile compound. At least one non-volatile compound, at least by capillarity, is transported by at least one volatile compound. Each transported non-volatile compound is concentrated by injecting at least one volatile compound into or onto the porous substrate to move at least one non-volatile compound from one point of the porous substrate to another. For each step of injecting a volatile compound, each non-volatile compound is dried at one point of the porous substrate by evaporating each volatile compound.

Abstract: The invention relates to a method which comprises emitting ultrasound into a liquid mixture containing first and second reagents in separate phases initially separated by a liquid precursor-gas barrier, the ultrasound having a high enough energy level to vaporise the precursor gas, such as to contact the reagents and thus to activate a chemical reaction therebetween.

Abstract: The present invention relates to systems and methods for manipulating droplets within a high through put microfluidic system.

Abstract: A microchannel formed at the interface of two layers of material, at least one of the two materials being a substrate. A volume of the microchannel contains a film of polymer fixed by covalent bonding to the substrate layer. The film of polymer being formed from a hydrogel material susceptible to undergoing changes in volume under the action of an external stimulus. The hydrogel polymer is chosen from those which are sensitive to changes in temperature, light, electrical field or pH. A method for producing the microchannel.

Abstract: A microfluidic device and method for producing and collecting single droplets of a first fluid, the device including a microfluidic platform having at least a droplet microchannel wherein is produced a flow of single droplets of the first fluid dispersed in a second fluid immiscible with the first fluid, the droplet microchannel having at least one inlet extremity and at least one outlet extremity for distributing the flow of droplets, the device further including: a collection device including a plurality of receiving areas adapted to collect at least one of the droplets, elements for changing the relative position of the collection device and the outlet of the microfluidic platform, elements for controlling the flow of droplets, and elements for synchronizing the flow of droplets at the outlet of the droplet microchannel and the relative movement of the collection device with regards to the microfluidic platform.

Abstract: The invention relates to an emulsion that can be activated by ultrasounds, comprising, in an emulsion in an aqueous solution, microparticles having a diameter of less than 10 ?m and containing an active agent and a gaseous precursor in a liquid form, encapsulated by a first emulsifier. The microparticles contain nanoparticles smaller than 1 ?m, in an emulsion in the gaseous precursor, each nanoparticle comprising an inner liquid that contains the active agent and is encapsulated by a second emulsifier.

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