Abstract: The present invention relates to a device (2) for providing a liquid medium with a controlled flow rate and with a controlled concentration of a dissolved gas, the device (2) comprising: —a liquid reservoir (4) provided with: —at least one gas inlet (7); —at least one gas outlet (8); and—at least one liquid outlet (9); —an admission line (5) configured to provide a gaseous medium into the liquid reservoir (4), the admission line (5) being connected to the at least one gas inlet (7) and comprising at least one control valve (12); and an emission line (6) configured to withdraw the gaseous medium from the liquid reservoir (4), the emission line (6) being connected to the at least one gas outlet (8) and comprising at least one control valve (15). The present invention further relates to an assembly comprising said device, and to a method for providing a liquid medium with a controlled flow rate and with a controlled concentration in a dissolved gas.

Abstract: The present invention relates to a microfluidic device to manipulate, select, treat, or cultivate living bodies, comprising a first chamber, a second chamber and a network of guiding tracks, wherein: said network of guiding tracks comprises at least one first guiding track connecting the first chamber and the second chamber and at least one second guiding track connecting said at least one first guiding track with at least two interconnections; and said at least one second guiding track comprises a curved part; said curved part exhibiting a concavity facing the second chamber or the part of the network connected to the second chamber.

Abstract: A microfluidic device for performing physical, chemical or biological treatment to at least one packet without contamination.

Abstract: A microfluidic print head of a printer has a distal face, an injection channel, a suction channel, a groove, and a light source or an optical waveguide. The injection channel is configured to inject an ink onto a substrate and leads onto the distal face by an injection opening The suction channel is configured to suck up the ink and leads onto the distal face by a suction opening. The groove is defined on the distal face and into which the suction opening leads.

Abstract: Disclosed is a minifluidic device including a matrix, an elongated guiding duct embedded at least in part in the matrix, with at least one port to the outside of the matrix, a movable fiber at least partly contained in the guiding duct, and able to undergo within the guiding duct, and at least along some part of the fiber, at least one action selected among a sliding, or a deformation, or a rotation and at least one of the movable fiber or the guiding duct is elastic or is non linear along at least part of its length, or at least part of the matrix is elastic.

Abstract: A device for cell culture, in particular of neuronal cells, including: a substrate defining a first microfluidic chamber to be seeded with a first cell culture, and at least a second microfluidic chamber, a fluidic interconnection system connecting the first and second chambers and enabling cellular extensions, in particular axons, to extend from one chamber to the other, wherein the interconnection system of the device is made so as to promote the progression of at least one first type of cellular extension, the first and second types of extension being different either due to the microfluidic chamber from which they originate, or due to the type of cell of which they constitute an extension.

Abstract: A microfluidic print head of a printer has a distal face, an injection channel, a suction channel, a groove, and a light source or an optical waveguide. The injection channel is configured to inject an ink onto a substrate and leads onto the distal face by an injection opening The suction channel is configured to suck up the ink and leads onto the distal face by a suction opening. The groove is defined on the distal face and into which the suction opening leads.

Abstract: The invention relates to a method for detecting organisms in a liquid sample, comprising the provision of a capture area including particles in a liquid medium and subjected to a hydrodynamic flow, wherein the organisms to be detected are capable of binding to these particles, the method comprising the steps of: (a) circulating the sample through the capture area; (b) circulating a growth medium through the capture area; and (c) determining the presence, nature or concentration of organisms in the capture area; said particles being retained in the capture area as a fluidized bed for at least one part of these steps. The invention also relates to a system for implementing this method.

Abstract: A microfluidic device for performing physical, chemical or biological treatment to at least one packet without contamination.

Abstract: A microfluidic device for performing physical, chemical or biological treatment to at least one packet without contamination.

Abstract: Disclosed is a fluidic device including at least: a) a solid matrix; b) a textile component, embedded in the matrix and mechanically cohesive with the matrix; c) at least one channel embedded in the matrix and entangled with the textile component, the channel being at least partly open. A method for making a fluidic device includes providing a textile component including support fibers and at least a movable fiber entangled with the textile, embedding at least part of the textile and part of the movable fiber, in a matrix precursor material, applying a treatment in order to obtain a solid matrix.

Abstract: An aqueous liquid medium for analyzing, purifying or separating species in an element having walls or for treating the walls of an element. The medium includes at least a polymer consisting of several polymeric segments. The polymer is of the irregular block-copolymer or irregular comb-like polymer type and has on the average at least three junction points between polymeric segments of different chemical or topological nature. The medium may be used in methods for analyzing, purifying or separating species and methods for treating an element to be contacted with a fluid and/or species contained in the fluid during preservation, transport, analysis, purification or separation of the fluid.

Abstract: The present invention relates to a microfluidic device to manipulate, select, treat, or cultivate living bodies, comprising a first chamber, a second chamber and a network of guiding tracks, wherein: said network of guiding tracks comprises at least one first guiding track connecting the first chamber and the second chamber and at least one second guiding track connecting said at least one first guiding track with at least two interconnections; and said at least one second guiding track comprises a curved part; said curved part exhibiting a concavity facing the second chamber or the part of the network connected to the second chamber.

Abstract: The present invention concerns a microfluidic system comprising: a microchannel containing several elements of two non-miscible fluids, the microchannel comprising a droplet (30) containing magnetic particles (M), and a device for generating inside the microchannel magnetic field, said device comprising an activable magnetic element, the activable magnetic element comprising a tip (5,6), the microfluidic system being configured to transport the droplet by flow or by pressure difference.

Abstract: Disclosed is a fluidic device including at least: a) a solid matrix; b) a textile component, embedded in the matrix and mechanically cohesive with the matrix; c) at least one channel embedded in the matrix and entangled with the textile component, the channel being at least partly open. A method for making a fluidic device includes providing a textile component including support fibers and at least a movable fiber entangled with the textile, embedding at least part of the textile and part of the movable fiber, in a matrix precursor material, applying a treatment in order to obtain a solid matrix.

Abstract: Disclosed is a minifluidic device including a matrix, an elongated guiding duct embedded at least in part in the matrix, with at least one port to the outside of the matrix, a movable fiber at least partly contained in the guiding duct, and able to undergo within the guiding duct, and at least along some part of the fiber, at least one action selected among a sliding, or a deformation, or a rotation and at least one of the movable fiber or the guiding duct is elastic or is non linear along at least part of its length, or at least part of the matrix is elastic.

Abstract: The invention concerns a microfluidic system (1) comprising: at least one channel (2) for the flow of fluid having an inlet (4), an outlet (5) and a longitudinal axis (7) extending between the inlet (4) and the outlet (5), said channel (2) comprising a capture zone (3), and the cross section of the channel (2) orthogonal to the longitudinal axis (7) of the channel (2) increasing in size in the capture zone (3), from the inlet (4) towards the outlet (5) of the channel (2); and means (6) for applying a magnetic field having a decreasing intensity in the capture zone (3) of the channel (2), from the inlet (4) towards the outlet (5) of the channel. The invention also concerns a method for treating a sample that can be implemented with this system.

Abstract: The present invention concerns a method of detecting macroions in a liquid medium contained in a space, the method including: a) submitting the liquid medium to a stimulating electrical field to induce formation of aggregates of macroions, the formed aggregates of macroions preferably not including any additional labeling agent, and b) measuring, in a detection zone of the space, spatial and/or temporal fluctuations within the liquid medium of at least one variable depending on the concentration of the macroions in the liquid medium, and c) determining, based on these fluctuations, the presence of the macroions, step c) preferably including processing by a time-dependent or space dependent analysis, more preferably by wavelet analysis, or by autocorrelation the fluctuations measured at step b).

Abstract: An aqueous liquid medium for analyzing, purifying or separating species in an element having walls or for treating the walls of an element. The medium includes at least a polymer consisting of several polymeric segments. The polymer is of the irregular block-copolymer or irregular comb-like polymer type and has on the average at least three junction points between polymeric segments of different chemical or topological nature. The medium may be used in methods for analyzing, purifying or separating species and methods for treating an element to be contacted with a fluid and/or species contained in the fluid during preservation, transport, analysis, purification or separation of the fluid.

Abstract: A straight, branched or cross-linked polymer, including, per 100 mol %: a) a mole fraction from 75% to 99.95% of monomer units from an N,N-dialkyl acrylamide; b) a mole fraction from 0.05% to 1% of monomer units from a monomer of formula (I): CH2=C(Ri)-C(?O)—O—[(CH2-CH(R2)-O]n-R3 (I); c) optionally a mole fraction higher than 0% to 24% either of monomer units from a monomer including a free strong acid function, partially or totally salified, or of monomer units from a monomer of formula (II): CH2=C(R4)-C(?O)—Y—(CH2)m-N(R5)(R6) (II); d) optionally a mole fraction higher than 0% to 1% of a diethylene or polyethylene cross-linking monomer. Also, a method for treating a surface made of a hydrophobic material, using the polymer, and an aqueous, hydro-organic or organic solution including the polymer for modifying interactions between the species contained the solution and the hydrophobic surface.