Commissariat À L'énergie Atomique Et Aux Énergies Alternatives

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Pascal Fugier

Olivier Dellea

Philippe Coronel

Severine Vignoud

Nicolas Dreuilles

Helene Marie

Simon Frederic Desage

Jerome Gavillet

Hai Trieu Phan

Simon-Frédéric Desage

Simon Frédéric Desage

A method for producing an assembly of particles bound by a substrate, including: making a compact film of solid particles floating on a carrier liquid, the solid particles potentially holding objects between them; spraying particles onto a face of the compact film opposite to the one immersed in a carrier liquid, to create a substrate-forming-skin adhering to the solid particles; and extracting an obtained assembly outside the carrier liquid.

Method for producing a substrate by spraying particles onto a compact film of solid particles on a carrier liquid

A process for depositing a compact film of particles on an internal surface of a part, including: a) placing the part in a carrier liquid; b) generating a carrier liquid stream in a hollow of the part towards a surface of the carrier liquid, to create a protuberance; c) dispensing the particles to form a compact film floating on the liquid between a contact line and an upstream front of particles; and d) transferring the film onto the internal surface by operating a relative displacement between the part and the surface of the carrier liquid, while continuing dispensing the particles on the upstream front.

Process for depositing a compact film of particles on the internal surface of a part having a hollow delimited by this internal surface

An installation for forming a compact film of particles on a surface of a carrier fluid, including a zone acting as a reservoir of carrier fluid, an inclined ramp, a particle storage and transfer zone, a mechanism moving the carrier fluid, a mechanism for dispensing the particles in solution, configured to dispense the particles on the surface of the carrier fluid in the zone acting as a reservoir, and a structure for deflecting the particles configured to favor, along a transverse direction of the installation, spreading of the particles at the outlet of the zone acting as a reservoir. The structure for deflecting particles is permeable to the carrier fluid.

Installation and method with improved performance for forming a compact film of particles on the surface of a carrier fluid

The invention concerns a method for producing a chromatography-enrichment column, the method comprising the following steps: (a) depositing at least one layer of desired particles, which may be identical or different, and are intended to constitute the stationary phase, in a compact assembly, on the flat surface of a substrate; (b) crosslinking the layer in at least the regions corresponding to the desired shape of the enrichment column to be obtained; (c) impregnating the layer with a light radiation-sensitive material; (d) insolating the layer obtained in step (c) so as to form insolated regions of which the shape corresponds to the desired internal shape of the enrichment column, if the light radiation-sensitive material behaves like a positive resin or to form non-insolated regions of which the shape corresponds to the desired internal shape of the enrichment column if the light radiation-sensitive material behaves like negative resin; and (e) eliminating the light radiation-sensitive material in the zones corresponding to the internal shape of the enrichment column. The invention is used in particular in the field of chemical analysis.

Method for producing a chromatography-enrichment column

A method for transferring objects onto a substrate, or running substrate, the objects to be transferred being placed in a transfer area containing a carrier liquid forming a conveyor, the objects being held by a compact film of particles floating on the carrier liquid of the transfer area, within which the objects are displaced with the film of particles to be transferred onto the substrate, making at least one connector on at least one of the objects, the connector being made by a substance comprising a polymerizable compound, put in contact with the object arranged within the transfer area, and then by polymerization of the substance.

Method for transferring objects onto a substrate using a compact particle film, including a step of producing connectors on the objects

The invention concerns a method for producing a chromatography analysis column, the resulting column, and a device comprising such a column. The method according to the invention comprises the following steps: (a) depositing on the flat surface of a substrate a first layer of particles which are intended to form the stationary phase; (b) depositing on the layer at least one second layer of compactly assembled particles; (c) impregnating the first and second layers with a light radiation-sensitive material, to form at least two compactly assembled particle layers impregnated with sensitive material; (d) insolating these layers in the regions corresponding to the desired internal shape of the chromatography analysis column, if the light radiation-sensitive material behaves like a positive resin, or outlining this internal shape if the light radiation-sensitive material behaves like a negative photosensitive resin; (e) eliminating either the regions insolated in step (d) if the light radiation-sensitive layer behaves like a positive photosensitive resin, or the regions not insolated in step (d) if the light radiation-sensitive material behaves like a negative photosensitive resin; and (f) covering and sealing the structure obtained in step (e) with a cover covered on the face facing the layers with at least one layer of compactly assembled particles which are identical to or different from those deposited on the substrate surface. The invention is used in particular in the field of chemical analysis.

Method for producing a chromatography analysis column

An installation for forming a compact film of particles on a surface of a carrier fluid, including: a zone acting as a reservoir of carrier fluid; an inclined ramp; a particle storage and transfer zone situated extending from the inclined ramp; a mechanism moving the fluid; a mechanism dispensing the particles in solution, configured to dispense the particles at the surface of the carrier on the surface of the carrier fluid in the zone acting as a reservoir; and a mechanism raising a level of the carrier fluid by capillary effect, arranged at a junction between the zone acting as a reservoir and the inclined ramp.

A facility for depositing a film of ordered particles onto a moving substrate, the facility configured to allow deposition, onto the substrate, of a film of ordered particles escaping from a particle outlet of a transfer zone having a first width. The facility further includes an accessory device in a form of a deposit head, provided to seal the particle outlet and configured to allow the deposition, onto the substrate, of a film of ordered particles escaping from an end of a particle transfer channel of the deposit head, the end having a second width strictly lower than the first width.

Facility and method for depositing a width adjustable film of ordered particles onto a moving substrate

A method for forming a film of particles on a carrier liquid present in a receptacle, for depositing this film onto a substrate, the method including: making a film blank between a barrier and a head including a tilted ramp, the blank being obtained by dispensing particles via the tilted ramp and carried out until the particles floating on the carrier liquid occupy a space between the barrier and an upstream front of particles located on the tilted ramp; and elongating the film by continuing dispensing the particles, and moving the head to move away from the barrier, the film elongation being performed to hold a front of particles on the ramp.

Method for forming a film of particles on a carrier liquid, with movement of an inclined ramp for compressing the particles

An optical method for characterizing a diffractive surface having a crystal grain structure, including the steps of: a) successively illuminating said surface with a plurality of light beams (Fi) having propagation directions inclined by a same angle &#x398;; relative to the normal to the surface and of which the projections on the surface form azimuth angle &#x3c6;{umlaut over (&#x3b9;)} that are different relative to a reference direction; b) acquiring an image of the surface corresponding to each of the light beams; and c) digitally processing images to obtain at least one item of information on at least one property of the surface chosen from: the grain structure, texture and level of ordering thereof. An optical head (TO) and apparatus for implementing such a method.

Optical method for characterizing a diffractive surface and apparatus for implementing such a method

A method for depositing particles onto a substrate, or a running substrate, including: (a) making a compact film of particles floating on a carrier liquid provided in a transfer area having an outlet of particles laid out facing the substrate; (b) depositing a substance on the compact film of particles, in the transfer area; (c) transferring, through the outlet of particles and onto the substrate, the compact film of particles coated with the substance; and then (d) removing the substance to carry away with the substance the particles of the film which adhere to the substance, to generate at least one recessed area within the film deposited on the substrate.

Method for depositing a particle film onto a substrate via a liquid conveyor, including a step of structuring the film on the substrate

A method of transferring objects onto a substrate, or a moving substrate, the objects to be transferred being placed in a transfer area including an inlet and an outlet spaced apart from one another by two lateral edges opposite one another, and holding a carrier liquid forming a conveyor, the objects being held by a compact film of particles floating on the carrier liquid of the transfer area, in which the objects are moved with the particle film to be transferred onto the substrate when they reach the outlet.

Method for transferring objects onto a substrate by means of a compact film of particles

A facility for depositing a film of ordered particles onto a moving substrate, the facility including: a transfer area including an entry of particles and an exit of particles spaced apart from each other by two side edges facing each other, retaining a carrier liquid on which the particles float, a capillary bridge ensuring connection between the carrier liquid contained in the transfer area and the substrate, and a plurality of suction nozzles capable of attracting the particles towards its two side edges.

Facility and method for depositing a film of ordered particles onto a moving substrate

A method for depositing particles on a substrate, or a running substrate, including: (a) producing at least one first compact film of particles floating on a carrier liquid provided in a transfer area having an outlet of particles arranged facing the substrate; (b) producing at least one pattern by depositing a substance on the first film in the transfer area, along a contour of the pattern, the substance maintaining the particles of the film together in contact with the substance; (c) removing at least one portion of the particles of the first film located interiorly relatively to the contour, or exteriorly relatively to the contour; and then (d) transferring patterns onto the substrate through the outlet of particles.

Method for depositing particles onto a substrate, including a step of structuring a particle film on a liquid conveyor

The present invention relates to a process for manufacturing a segmented optical structure (), comprising at least the steps consisting in:

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Bernin, France

Pascal Fugier