Abstract: An electrochemical measurement cartridge includes a container including a first analysis chamber for receiving a fluid to be analyzed and a second calibration chamber for receiving a calibration fluid; an electrochemical measurement sensor including at least one work electrode and one reference electrode; a container supporting the sensor and a cover arranged mobile relative to one another to confer on the cartridge at least two separate operating configurations, a first configuration in which the sensor is communicating with the first analysis chamber and a second configuration in which the sensor is communicating with the second calibration chamber; sealing between the chambers of the container and the cover; and a drive member for providing a relative movement of the container relative to the cover.

Abstract: A first ply and then a second ply, which is superposed on the first ply, are produced on a hoop-type first support. The hoop-type first support has a first receiving surface, to form a laminate. The first and second plies forming the laminate are transferred onto an annular second receiving surface of a core so that the laminate is wrapped on the core until each ply is closed on itself and the laminate is thus closed on itself in a ring about the central axis of the core.

Abstract: The cutting system is configured to cut a continuous strip which extends lengthwise in a longitudinal direction and widthwise between a first edge and a second edge into strips. The cutting system includes a drive device which imparts to the continuous strip a feed speed, a first cutting roller and a contrarotating second cutting roller that cooperate to cut the continuous strip across its full width. The first cutting roller is provided with a first helical blade and is driven in rotation A variable synchronizer makes it possible to select and to modify the synchronization ratio between the rotational speed of the first cutting roller and the non-zero forward speed of the continuous strip in such a way as to be able to adjust the cutting angle according to which the cross-section of the continuous strip is oriented with respect to the longitudinal direction of the continuous strip.

Abstract: An electrochemical measurement cartridge includes a container including a first analysis chamber for receiving a fluid to be analyzed and a second calibration chamber for receiving a calibration fluid; an electrochemical measurement sensor including at least one work electrode and one reference electrode; a container supporting the sensor and a cover arranged mobile relative to one another to confer on the cartridge at least two separate operating configurations, a first configuration in which the sensor is communicating with the first analysis chamber and a second configuration in which the sensor is communicating with the second calibration chamber; sealing between the chambers of the container and the cover; and a drive member for providing a relative movement of the container relative to the cover

Abstract: A micropump with a deformable membrane, including: a first chamber, one wall of which includes a first deformable membrane portion and an actuator of the first membrane portion; a second chamber including a second deformable membrane portion and a third chamber, including a third deformable membrane portion, the second chamber and the third chamber being connected together through a first channel, at least one of the second and third chambers being connected through a second channel to the first chamber; each of the second chamber and third chamber including a mechanism forming a detection gauge, but not including an activation mechanism.

Abstract: A flowmeter includes a first chamber and a second chamber connected through a channel. The first chamber is provided with a first deformable membrane and with first and second gauges. The second chamber is provided with a second deformable membrane and with third and fourth gauges. The four gauges form a Wheatstone bridge.

Abstract: A flowmeter includes a first chamber and a second chamber connected through a channel. The first chamber is provided with a first deformable membrane and with first and second gauges. The second chamber is provided with a second deformable membrane and with third and fourth gauges. The four gauges form a Wheatstone bridge.

Abstract: A micropump with a deformable membrane, including: a first chamber, one wall of which includes a first deformable membrane portion and an actuator of the first membrane portion; a second chamber including a second deformable membrane portion and a third chamber, including a third deformable membrane portion, the second chamber and the third chamber being connected together through a first channel, at least one of the second and third chambers being connected through a second channel to the first chamber; each of the second chamber and third chamber including a mechanism forming a detection gauge, but not including an activation mechanism.

Abstract: A device for manipulating and observing suspended particles in a liquid. The device includes: a first substrate including at least one first orifice forming an inlet site for the liquid, an observation site for observing the suspended particles, and a mechanism displacing the liquid from the inlet site to the observation site. The first substrate includes a first hydrophobic layer. The liquid is electrically conducting. The liquid can be displaced as a droplet by electrowetting, the droplet being in contact with the hydrophobic layer.

Abstract: The invention relates to a micropump for which the pressure force is not limited by the electrowetting saturation angle, while being simple to manufacture. According to the invention, the microchannel (10) comprises an inlet orifice (11) and has a hydrophilic wall (12) extending from said inlet orifice (11). Displacement means are provided to displace a droplet (51) of liquid (L1) by electrowetting on a hydrophobic surface (22) until said droplet (51) is brought into contact with said hydrophilic wall (12), such that said droplet (51) enters into said microchannel (10) through said inlet orifice (11) by wetting, causing displacement of said fluid (F1).

Abstract: The invention concerns a microfluidic liquid-movement device. The movement device according to the invention comprises a microchannel (10) provided with an opening (11B) onto the environment, the microchannel (10) being filled with a first liquid (F1) and a second liquid (F3), the two liquids being separated by a separating fluid (F2). Injection of the second liquid (F3) through the opening (11B) is obtained by movement of the first liquid (F1) by electrowetting.

Abstract: The device enables a second drop to be mixed in a first drop deposited on an electrically insulating layer of an analysis support, in a viscous liquid environment and to mix the resulting drop. The device comprises at least one injector forming the second drop above the first drop. After formation of the second drop, a voltage impulse is applied between a first electrode, arranged under the electrically insulating layer of the analysis support, underneath the first drop, and a second electrode arranged near the outlet orifice of the injector. The voltage impulse fosters the coalescence phenomenon between the two drops, while preventing risks of contamination of the injector by the reagent of the first drop.

Abstract: The device enables a second drop to be mixed in a first drop deposited on an electrically insulating layer of an analysis support, in a viscous liquid environment and to mix the resulting drop. The device comprises at least one injector forming the second drop above the first drop. After formation of the second drop, a voltage impulse is applied between a first electrode, arranged under the electrically insulating layer of the analysis support, underneath the first drop, and a second electrode arranged near the outlet orifice of the injector. The voltage impulse fosters the coalescence phenomenon between the two drops, while preventing risks of contamination of the injector by the reagent of the first drop.