Abstract: A method for producing a solid-state semiconducting structure, includes steps in which: (i) a monocrystalline substrate is provided; (ii) a monocrystalline oxide layer is formed, by epitaxial growth, on the substrate; (iii) a bonding layer is formed by steps in which: (a) the impurities are removed from the surface of the monocrystalline oxide layer; (b) a semiconducting bonding layer is deposited by slow epitaxial growth; and (iv) a monocrystalline semiconducting layer is formed, by epitaxial growth, on the bonding layer so formed. The solid-state semiconducting heterostructures so obtained are also described.
Type:
Application
Filed:
September 17, 2008
Publication date:
November 18, 2010
Applicant:
Centre Natinal De La Recherche Scientifique (C.N.R.S)
Inventors:
Guillaume Saint-Girons, Ludovic Largeau, Gilles Patriarche, Philippe Regreny, Guy Hollinger
Abstract: A method of manufacturing composite fibers comprising two distinct layers having different compositions and physico-chemical properties and controlled, homogenous thicknesses, wherein one of two layers comprises carbon nanotubes and the composite fibers are obtained from carbon nanotube fibers and a first solution of a selected concentration of colloidal particles intended to constitute the second layer, comprising the following steps: placing the fibers in contact, by lateral surfaces thereof, with a surface of a second solution which is adapted to chemically cause aggregation of the colloidal particles and is completely or partially immersed in the second solution, the immersed thickness of the fibers defining the immersion area, placing the thus pre-coated fibers in contract, on the same lateral surface, with a surface of the first colloidal particle solution and immersed in it at most up to the immersion area to locally form a colloidal gel with a fixed thickness determined by the concentration of the fir
Type:
Application
Filed:
October 26, 2005
Publication date:
May 22, 2008
Applicant:
CENTRE NATINAL DE LA RECHERCHE SCIENTIFIQUE-CNRS, A CORPORATION OF FRANCE
Abstract: A method of estimating precipitation characteristics including acquiring a radar image including at least a vertical plane of a precipitation zone; processing a vertical profile to generate digital signals representative of reflectivity in vertical direction z; integrating the signals representative of reflectivity by assimilation of a reflectivity vertical profile in an aggregation model to generate a signal representative of the profile in the vertical plane of a mean particle diameter weighted by mass of each particle; and determining concentration of the solid particles on the basis of signals previously determined.
Type:
Application
Filed:
October 21, 2004
Publication date:
May 10, 2007
Applicant:
CENTRE NATINAL DE LA RECHERCHE SCIENTIFIQUE CNRS, A CORPORATION OF FRANCE ,
Inventors:
Jacques Testud, Richard Ney, Erwan Le Bouar
Abstract: The present invention relates to compositions useful for the detection of oxygen in a humid medium, characterized in that they comprise at least one complex of the formula (LMX).sub.n in which the ligand L is selected from among the groups: ##STR1## where: R represents Cl,Br,NO.sub.2,C.sub.1-4 -alkoxyl, C.sub.1-4 -alkyl,m and p are comprised between 0 and 3,q is comprised between 0 and 2,the substituent R on the pyridine nuclei never occupying a position neighboring the nitrogen atom,X=Cl,Br,I,NO.sub.3,C10.sub.4,M represents Cu or Mn, andn is equal to 1 or 2,as colored indicator of the presence of oxygen in a humid medium, in solution in an acceptable solvent.The present invention also relates to a process for preparing such compositions, and detectors of the presence of oxygen comprising them.
Type:
Grant
Filed:
May 28, 1986
Date of Patent:
September 20, 1988
Assignee:
Centre Natinal de la Recherche Scientifique