Abstract: The invention concerns a device for controlling the charge of an aerosol comprising: —an aerosol inlet area; —a discharge area having dielectric barriers, in which charged species are generated, the discharge area and the aerosol inlet area being arranged relative to one another in such a way that the aerosol introduced in this way does not flow via the discharge area; —a mixing area for mixing the aerosol with a portion of the charged species from the discharge area; —a post-discharge area linked to the discharge area, the aerosol inlet area and the mixing area being arranged in such a way that at least a portion of a stream flowing in the post-discharge area drives at least a portion of the charged species formed in the discharge area and expelled from the discharge area by electrostatic repulsion towards said mixing area.

Abstract: The invention concerns an aerosol charger having electrical discharge comprising: a body (2); an ion source (3) comprising two electrodes (31, 32); the charger being characterized in that the body (2) and at least a first electrode (32) of the ion source (3) are aligned along a same axis of longitudinal symmetry (AA?) of the charger, the body (2) surrounding the first electrode (32) in such a way as to define an area (5) for an aerosol to flow between a space defined between the body (2) and the first electrode (32); and in that the first electrode (32) comprises a hole (321) in communication with the area (5) for the aerosol (Ae) to flow, the hole (321) being designed to allow ions formed at the ion source (3) to pass therethrough in order for them to mix with an aerosol (Ae) flowing in the area (5) for the aerosol (Ae) to flow.

Abstract: The invention concerns a device for controlling the charge of an aerosol comprising: —an aerosol inlet area; —a discharge area having dielectric barriers, in which charged species are generated, the discharge area and the aerosol inlet area being arranged relative to one another in such a way that the aerosol introduced in this way does not flow via the discharge area; —a mixing area for mixing the aerosol with a portion of the charged species from the discharge area; —a post-discharge area linked to the discharge area, the aerosol inlet area and the mixing area being arranged in such a way that at least a portion of a stream flowing in the post-discharge area drives at least a portion of the charged species formed in the discharge area and expelled from the discharge area by electrostatic repulsion towards said mixing area.

Abstract: The invention concerns an aerosol charger having electrical discharge comprising: •—a body (2); •—an ion source (3) comprising two electrodes (31, 32); the charger being characterised in that •—the body (2) and at least a first electrode (32) of the ion source (3) are aligned along a same axis of longitudinal symmetry (AA?) of the charger, the body (2) surrounding the first electrode (32) in such a way as to define an area (5) for an aerosol to flow between a space defined between the body (2) and the first electrode (32); and in that •—the first electrode (32) comprises a hole (321) in communication with the area (5) for the aerosol (Ae) to flow, the hole (321) being designed to allow ions formed at the ion source (3) to pass therethrough in order for them to mix with an aerosol (Ae) flowing in the area (5) for the aerosol (Ae) to flow.

Abstract: The invention relates to a spray pyrolysis method characterized in that it is used in the synthesis of nanoparticles with a closed structure of metal chalcogens having a lamellar crystalographic structure of general formula MaXb, wherein M represents a metal and X represents a chalcogen, a and b represent the respective proportions of metal and chalcogen, and in that it comprises pyrolysis of a liquid aerosol obtained from a solution of at least one metal precursor (M) and a chalcogen (X), or at least one precursor of said metal (M) and at least one precursor of said chalcogen (X) dissolved in a solvent, said solution being atomized into fine droplets in a suspension in a vector gas.

Abstract: The invention concerns a method for depositing a thin polymer film on a substrate for functionalizing the surface of said substrate, comprising a step which consists in electrohydrodynamic spraying of a polymerizable precursor towards the substrate so as to produce an electrostatic deposition of electrically charged droplets of said precursor and form the thin film on the surface by polymerizing the droplets. The method is characterized in that it further comprises a step for causing the excited species to interact with the droplets of the sprayed precursor, thereby promoting the polymerization reactions of said precursor. The invention also concerns a device for implementing the method, in particular for depositing a thin polymer film on a moving substrate-film.

Abstract: The invention concerns a method for depositing a thin polymer film on a substrate for functionalizing the surface of said substrate, comprising a step which consists in electrohydrodynamic spraying of a polymerizable precursor towards the substrate so as to produce an electrostatic deposition of electrically charged droplets of said precursor and form the thin film on the surface by polymerizing the droplets. The method is characterized in that it further comprises a step for causing the excited species to interact with the droplets of the sprayed precursor, thereby promoting the polymerization reactions of said precursor. The invention also concerns a device for implementing the method, in particular for depositing a thin polymer film on a moving substrate-film.

Abstract: The invention relates to a spray pyrolysis method characterized in that it is used in the synthesis of nanoparticles with a closed structure of metal chalcogens having a lamellar crystalographic structure of general formula MaXb, wherein M represents a metal and X represents a chalcogen, a and b represent the respective proportions of metal and chalcogen, and in that it comprises pyrolysis of a liquid aerosol obtained from a solution of at least one metal precursor (M) and a chalcogen (X), or at least one precursor of said metal (M) and at least one precursor of said chalcogen (X) dissolved in a solvent, said solution being atomized into fine droplets in a suspension in a vector gas.

Abstract: The invention concerns electrohydrodynamic spraying means enabling electrohydrodynamic spraying, in the air and at atmospheric pressure, of liquids with high surface tension such as water. The means are characterised in that they comprise at least a liquid dispensing conduit (1) whereof the dimensions of the external diameter and of the internal diameter, at the liquid exit point, correspond to an appropriate ratio. Said means can be advantageously used for depolluting aerosol effluents, or transformable into aerosols.