Commissariat a L'energie Atomique

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Mannesmann Precision Tubes France

Olivier Raccurt

Olivier Jean Poncelet

Jorice Samuel

Yves Fouillet

Olivier Renard

Marinella Mazzanti

Daniel Imbert

Serge Valette

Jean Berthier

Frederic-Xavier Gaillard

Aurélien Auger

Francois Tardif

Frédéric-Xavier Gaillard

Raphaël Couturier

Céline Noel

Olivier Sicardy

Nicolas Wartenberg

François Tardif

Francis Bourguignon

Pierre-Jean Marchais

Elise Villemin

Marc Haber

Christine Delord

Anne-Claire Pescheux

Philémon Giraud

Céline Bouquet

Noel Céline

A material that can be used for detecting at least one alkaline element in cationic form chosen from polymers or inorganic materials, the material being functionalised by at least one group, referred to as group A, comprising one or more aromatic rings, the or all or a portion of the aromatic rings comprising at least one imine substituent and the or all or a portion of the aromatic rings comprising at least one atom carrying a free doublet within the or all or a portion of the rings and/or at least one other substituent different from an imine substituent comprising at least one atom carrying a free doublet.

Specific materials that can be used for the detection of at least one alkaline element

A method for forming a layer of single-phase oxide (Fe, Cr)Owith a rhombohedral structure on a steel or super alloy substrate, may include, successively: (a) supplying a steel or super alloy substrate covered with a surface layer, the steel including at least 2 wt.-% chromium; (b) removing the surface layer in an atmosphere containing at least 0.2 atm O, creating a level of micro-deformation in the crystal lattice of the steel or super alloy that is greater than 1.0.10, and a heating at a heating rate higher than 400° C./s, such as to form a layer of rhombohedral oxide () (Fe, Cr)O; and (c) carrying out a thermal treatment, in the presence of air, at a water partial pressure of less than 10.000 ppm, and at a temperature varying in a range of from 400 to 1000° C., such as to grow the layer of rhombohedral oxide formed in the removing (b) to a thickness in a range of from 70 to 150 nm.

Method for forming a layer of single-phase oxide (Fe, Cr)Owith a rhombohedral structure on a steel or super alloy substrate

A method of optical marking of products by either applying a composition including at least one lanthanide complex and a vehicle on at least part of a surface or a product, or incorporating a composition including at least one lanthanide complex and a vehicle into at least part of a product. The lanthanide complex is according to Formula I: [Ln(L)].(Cat), wherein: Ln is a lanthanide, Cat is a cation and L is a ligand of formula II: 

Use of lanthanide complexes for optical marking of products

A porous silicon zone is metallized by performing in situ reduction of metallic ions dissolved in an aqueous solution and fixing of the metallic particles obtained on said zone in a single step. This step consists in particular in bringing the solution containing the metallic ions into contact with the zone to be metallized, the surface whereof has previously been functionalized to enable in situ reduction of the metallic ions and fixing of the metallic particles. Functionalization of the porous silicon zone is achieved by grafting two particular and distinct types of chemical functions. The first function used is a chelating chemical function for the metallic ions and/or for the metal corresponding to the metallic ions, whereas the second function is a reducing chemical function for the metallic ions. Such a metallization can be used for producing an electrically conducting porous diffusion layer of a fuel cell.

Metallization of a porous silicon zone by in situ reduction and application to a fuel cell

The invention relates to a microfluidic device for making a liquid/liquid or gas biphasic system using a first liquid or a gas and a second liquid, non-miscible with each other, the device having a first hydrophobic surface for the second liquid, the first liquid forming a layer () on said first hydrophobic surface. The device comprises means for introducing a drop () of the second liquid into the layer of first liquid or gas and in contact with said first hydrophobic surface, and means for displacing the drop on said first hydrophobic surface along a determined path, the device having on the path of the drop, at least one wetting defect causing, upon passing of the drop over this defect, failure of the triple line of contact of the drop on the first hydrophobic surface and inclusion of first liquid () or gas into the drop. The invention also relates to the associated method.

Making a liquid/liquid or gas system in microfluidics

The present invention relates to a silica particle comprising at least one complex of at least one lanthanide and of at least one ligand of formula (A) 

Silica particle comprising an organolanthanide compound, preparation process therefor and uses thereof

The invention relates to the use of a metal organosilicate polymer as a dispersion-forming agent. The metal organosilicate polymer used in the invention has one of the following formulae I and II:RSiAlO(OH)&#x2003;&#x2003;Formula I:RSiMO(OH)&#x2003;&#x2003;Formula II:The invention finds application in the field of dispersions of hydrophobic compounds in water and of organophobic compounds in an organic solvent, in particular.

Use of a metal organosilicate polymer as dispersion-forming agent

A composition including: a dispersion of particles of at least one oxide of at least one luminescent rare earth, disaggregated and stabilized in a hydrophobic liquid medium to which at least one surfactant is added, in which said surfactant is a non-ionic surfactant having an HLB (hydrophilic-to-lipophilic balance) lower than 12.

Dispersions of luminescent rare-earth oxide particles, varnish comprising these particles, their methods of preparation and method for marking substrates

In the invention, use is made of at least one metal organosilicate polymer, in the form of particles, having one of the following formulae I and II:RSiAlO(OH),&#x2003;&#x2003;Formula I:RSiMO(OH),&#x2003;&#x2003;Formula II:for the protection from oxidation and/or electromagnetic radiation of a compound sensitive to oxidation and/or to electromagnetic radiation. The invention finds application in particular in the field of the protection from oxidation and photoaging of various materials.

Use of a metal organosilicate polymer for the protection of compounds sensitive to oxidation and/or to electromagnetic radiation

This optical coding device comprises a plurality of aggregates suitable for emitting infrared, visible or ultraviolet rays by luminescence, at least one of the said aggregates comprising at least one luminophore. This aggregate further comprises at least one particle consisting of a surface plasmon effect material, the said luminophore and the said particle being suitable for entering into interaction.

Optical coding device by plasmon effect and authentication method using the device

An actuation device with several positions includes a support, at least one flexible membrane attached to the support forming at least one closed containment with the support with volume filled with at least one first liquid in the form of one or several drops, and at least a second liquid, the first liquid and the second liquid being immiscible, and an electrical device to modulate the profile of the membrane by controlling the shape of at least one of the drops.

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Chelieu, France

Olivier Raccurt