摘要:
Method for microanalyzing ions with the following steps: placing a volume of an ionic liquid (2) inside a cavity (1) having an internal volume, where the volume of said liquid is smaller than said internal volume; placing inside said internal cavity (1) a solution (4) containing said ions (C+, A−) to be analyzed, where the solvent of the solution (4) and the ionic liquid (2) are chosen for being immiscible and allowing an ion transfer (C+, A−) from said solution (4) to said ionic liquid (2); and detecting the presence of said ions (C+, A−) in said ionic liquid (2) using an analysis means (3) for analysing at least one type of ion in solution in said ionic liquid (2), in a free state or in a complex, said analysis means (3) being contacted with said ionic liquid (2). A device and a system for carrying out this method are also provided.
摘要:
(EN) The invention concerns a method for extracting at least one chemical or biological compound from a liquid phase comprising at least one functionalized ionic liquid, via a liquid extracting fluid (F) which is miscible with said ionic liquid(s), and a microfluidic system (10) for implementing said method. The inventive extraction method includes moving, on one surface (12) of a microfluidic system (19), at least one microdrop (14) of said liquid phase into an extraction solution (20) which comprises said extracting fluid and which is localized on said surface to obtain in output of said solution, under the effect of an electric field, an extract (E) moving away from said surface which is rich in extracting fluid and enriched in said or at least one of said compound(s), and a raffinate (R) moving on said surface which is rich in ionic liquid(s) and deleted in said or one of said compound(s).
摘要:
An optical test pattern for correcting convergence defects of a color camera comprises LN pattern elements (1.sub.ln) each disposed within one of the LN rectangles which result from a camera-screen lattice arrangement formed by L groups each consisting of M lines and by N columns, each pattern element being constituted by a vertical component and a diagonal component.
摘要:
A method for making electrical interconnections of carbon nanotubes, including a) depositing an ionic liquid including nanoparticles of at least one suspended electrically conducting material, covering at least one surface of an element configured to be used as a support for carbon nanotubes, b) forming a deposit of the nanoparticles at least against the surface of the element, c) removing the remaining ionic liquid, d) growing carbon nanotubes from the deposited nanoparticles, and further including between the c) removing the remaining ionic liquid and the d) growing carbon nanotubes, passivating the deposited nanoparticles not found against the surface of the element.
摘要:
A microfluidic system including: a substrate, one surface of which is covered with electrodes configured to move, under effect of an electric field, microdrops of a liquid phase including at least one functionalized ionic liquid; and capillaries for introducing a liquid extraction fluid onto the surface and for extracting the liquid extraction fluid from an orifice by forced convection, to obtain an extraction bath located on the surface for extraction of at least one chemical or biological compound from the liquid phase, and the bath is open to a surrounding space on at least two of its opposite sides, for moving, in contact with the surface, the microdrop upstream and downstream of the bath.
摘要:
A method for making electrical interconnections of carbon nanotubes, including a) depositing an ionic liquid including nanoparticles of at least one suspended electrically conducting material, covering at least one surface of an element configured to be used as a support for carbon nanotubes, b) forming a deposit of the nanoparticles at least against the surface of the element, c) removing the remaining ionic liquid, d) growing carbon nanotubes from the deposited nanoparticles, and further including between the c) removing the remaining ionic liquid and the d) growing carbon nanotubes, passivating the deposited nanoparticles not found against the surface of the element.
摘要:
The multichannel potentiostat comprises a reference terminal, a counter-electrode terminal, and at least two working terminals, respectively designed to be connected to a reference electrode, a counter-electrode and at least two working electrodes of an electrochemical cell. The potentiostat comprises first and second regulating circuits to apply a setpoint voltage respectively between the first and second working terminals and the reference terminal. The potentiostat comprises a control circuit of the counter-electrode voltage applied to the counter-electrode terminal. The control circuit comprises a first input terminal connected to a predefined potential and a second input terminal to which a regulating voltage representative of at least one of the voltages of the working terminals is applied.
摘要:
A method for extracting at least one chemical or biological compound from a liquid phase including at least one functionalized ionic liquid, via a liquid extracting fluid that is miscible with the ionic liquid, and a microfluidic system implementing the method. The extraction method includes moving, on one surface of a microfluidic system, at least one microdrop of the liquid phase into an extraction solution that includes the extracting fluid and that is localized on the surface to obtain in output of the solution, under effect of an electric field, an extract moving away from the surface that is rich in extracting fluid and enriched in the at least one compound, and a raffinate moving on the surface that is rich in ionic liquid and deleted in the at least one compound.
摘要:
The device of the invention comprises a support having a surface comprising an attachment zone (Z) capable of being functionalized with a probe (A) capable of binding, according to the pH and reversibly, to a target (B) so as to attach it; a working electrode (WE) and a counterelectrode (CE) for this working electrode, arranged on the support in the vicinity of the attachment zone; and means for applying a given electric current or a given potential to said working electrode so as to cause, when said attachment zone and said electrodes are immersed in an aqueous solution, a local variation in pH in the region of said attachment zone. The method for attaching and/or detaching a target or an object according to the invention uses this device, the attachment and/or the detachment being electrochemically controlled with the working electrode.