Abstract:
The invention relates to a liquid dispensing device, comprising a first and second substrate (46, 42), the first substrate (42) being provided with an opening (40) for introduction of a liquid, the second substrate (46) being provided with a number of electrodes of which one electrode (44) is called the transfer electrode, arranged at least partially opposite said opening (40), at least two electrodes (50, 52) for drop formation and one electrode (48), called the reservoir electrode, arranged between the transfer electrode (44) and the drop formation electrodes (50, 52) with a surface at least three times bigger than the surface of each drop formation electrode.
Abstract:
The invention concerns a method for reacting a reagent R with a cell C, which consists in: setting the cell C on a support S comprising a substantially planar surface, in the form of an aqueous drop on said surface; covering the planar surface of the support S whereon the aqueous drop has been set containing the cell C with a separation film F, allowing through gases and preventing the aqueous drops set on the support S from evaporating, F being non-miscible with the reagent R; triggering the reaction between the reagent R and the cell C by introducing the reagent R in the aqueous drop containing the cell C. The invention also concerns a device for implementing said procedure and its applications.
Abstract:
The invention concerns a device for ejecting liquid drops comprising: a shape-retaining body (28) provided with a cavity, filled with said liquid (20), and with at least an outlet (18) for the liquid; means for transmitting to the liquid sufficient impulse for ejecting at least one drop (26), said means comprising means for striking (23) a wall (30) of said body (28).
Abstract:
The invention concerns a device for chemical and/or biological analysis comprising an analysis support (100) having at least an input well (102) for receiving a sample, and an output well (104) for delivering said sample, at least an internal passage passing through the support to connect the input well to the output well, and at least a reagent reservoir (120a, 120b, 120c) connected to each passage (108) between the input well and the output well, wherein the input well, the output well and the reservoir emerge on a first surface (106) of the analysis support.
Abstract:
The invention concerns a microsystem, in particular for producing microswitches or microvalves, constituted on a substrate (50) and used for producing a shift between a first operating state and a second operating state by means of a heat actuated device with bi-metal switch effect. The heat-actuated device comprises a deformable element (51) connected, by opposite ends, to the substrate (50) so as to present naturally a deflection without stress relative to the substrate surface which faces it, said natural deflection determining the first operating state, the second operating state being produced by the heat-actuated device which induces, by the effect of temperature variation, a deformation of the deformable element (51) tending to reduce its deflection and submitting it to a compressive stress by buckling effect in a direction opposite to its natural deflection.
Abstract:
L'invention concerne également un dispositif de déplacement réversible d'au moins un volume de liquide (10) sous l'effet d'une commande électrique, comprenant des premiers moyens électriquement conducteurs (8), des deuxième moyens électriquement conducteurs (4), et des moyens pour induire un déplacement réversible d'un volume de liquide, depuis les premiers moyens vers les deuxièmes moyens électriquement conducteurs, sans contact avec ces moyens conducteurs lors du déplacement.
Abstract:
The invention concerns a device for air/water extraction by semi-humid electrostatic collection, comprising a chamber (7) containing a discharge electrode (1) for generating an ion flow from an ionized gas accumulation surrounding the discharge electrode (1) and a counter-electrode (2), an inlet (3) for mixing air and aerosol to be extracted which contains liquid or solid particles, a steam supply tube (8) and an outlet (4) for cleansed air. The invention is characterized in that the device enables stream to be introduced through said steam supply tube (8) in the gap between the discharge electrode (1) and the counter-electrode (2) so as to form a steam sheath (10) enclosing the discharge electrode over its entire length, such that the treated air is not steam-saturated.
Abstract:
The invention concerns a method for analyzing a liquid of a drop (2) including: contacting a drop of said liquid with a hydrophobic surface (8), moving the drop on said surface by electrowetting, so as to bring it into a site(24, 26, 28) for measuring electrical activity, wherein is arranged a conductive solution (42), measuring said electrical activity.
Abstract:
L'invention concerne un dispositif de déplacement d'au moins un petit volume de liquide (5) sous l'effet d'une commande électrique, comprenant un substrat (1) pourvu de premiers moyens électriquement conducteurs (2), le dispositif comprenant également des deuxièmes moyens électriquement conducteurs (3) disposés en vis-à-vis des premiers moyens électriquement conducteurs (2), les premiers moyens électriquement conducteurs et les deuxièmes moyens électriquement conducteurs pouvant être reliés à des moyens d'alimentation électrique pour permettre l'application de forces électrostatiques au petit volume de liquide (5). Les deuxièmes moyens électriquement conducteurs comprennent au moins un fil conducteur (3) disposé parallèlement au substrat et à une distance déterminée du substrat pour permettre le déplacement du petit volume de liquide (5) le long dudit fil conducteur (3) sous l'effet des forces électrostatiques appliquées.
Abstract:
The invention concerns a device for chemical and/or biological analysis comprising an analysis support (100) having at least an input well (102) for receiving a sample, and an output well (104) for delivering said sample, at least an internal passage passing through the support to connect the input well to the output well, and at least a reagent reservoir (120a, 120b, 120c) connected to each passage (108) between the input well and the output well, wherein the input well, the output well and the reservoir emerge on a first surface (106) of the analysis support.