Abstract: Device for health monitoring of a structure comprising a dielectric material of permittivity ?r, comprising a source of electromagnetic radiation, generating an electric field in the structure a detector measuring a component of the electric field, calculation means giving the value of ?r on the basis of the said component.
Type:
Grant
Filed:
March 30, 2004
Date of Patent:
December 2, 2008
Assignees:
Centre National de la Recherche Scientifique (CNRS), Office National d'etudes et de Recherches Aerospatiales (ONERA), Ecole Normale Superieure de Cachan
Inventors:
Michel Bernard Lemistre, Dominique Marc Placko
Abstract: The invention relates to a device which is used for the non-invasive detection of an electric potential or field, of the spatial and/or the temporal derivatives thereof, in a medium with a linear or quadratic electrooptical effect. The inventive device comprises: an optical source which is used to illuminate at least one zone of the medium that is to be probed with a light beam, the path of which defines an optical axis; and means for mapping the phase shift of the beam in the zone to be probed. Measuring means which are used to map the light beam phase shift comprise a confocal microscope in which the zone to be probed is placed in order to form an image of a plane of said zone.
Type:
Grant
Filed:
August 18, 2004
Date of Patent:
November 11, 2008
Assignees:
Centre National de la Reccherche Scientifique CNRS, Ecole Normale Superieure de Cachan
Abstract: The invention relates to a durable hydrophilic non-porous surface-modified polymer composition, to aqueous fluid channels based on said composition, to a microfluidic system comprising said channels, to a method for the production thereof and to a microfluidic chip or cells incorporating said composition.
Type:
Application
Filed:
May 10, 2005
Publication date:
October 23, 2008
Applicants:
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE NORMALE SUPERIEURE DE CACHAN, ASSOCIATION POUR LES TRANSFERTS DE TECHNOLOGIE DU
Inventors:
Laurent Griscom, Bruno Le Pioufle, Gilbert Legeay
Abstract: The invention concerns a device for microstructuring the surface of at least one substrate characterized in that it comprises a support frame (2) including at least means (6) for conveying the substrate (S) comprising preferably means (15) for supporting the substrate adapted to maintain the substrate in or relative to each of the modules so as to avoid any change of support when the substrate is shifted from one module to the other, a module for applying a photosensitive resin layer on the substrate, a module (20) for automatic exposure using a laser beam of the resin layer on the substrate based on a programmed scheme, a so-called developing module for removing the part of the resin layer which has been exposed of the part or the resin layer which has not been exposed, a module for chemically etching the substrate, a module for cleaning the substrate, and a control unit (7).
Type:
Application
Filed:
July 1, 2005
Publication date:
June 26, 2008
Applicants:
ECOLE NORMALE SUPERIEURE DE LYON, CENTRE NATIONAL DE LA RECHERCHE SCIENTRIQUE - CNRS
Abstract: A method of compensating vibration of an electrical machine comprising a stator and a moving portion, said stator being subjected to magnetic forces generated by alternating electrical excitation and leading to deformation thereof. The method comprises exciting piezoelectric actuators secured at predetermined action locations on the outside surface of the stator, said piezoelectric actuators being arranged to produce controlled deformation in said stator to counter the deformation induced by the magnetic forces.
Type:
Application
Filed:
September 5, 2005
Publication date:
May 1, 2008
Applicants:
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE NORMALE SUPERIEURE DE CACHAN
Abstract: The invention relates to a device which is used for the non-invasive detection of an electric potential or field, of the spatial and/or the temporal derivatives thereof, in a medium with a linear or quadratic electrooptical effect. The inventive device comprises: an optical source which is used to illuminate at least one zone of the medium that is to be probed with a light beam, the path of which defines an optical axis; and means for mapping the phase shift of the beam in the zone to be probed. Measuring means which are used to map the light beam phase shift comprise a confocal microscope in which the zone to be probed is placed in order to form an image of a plane of said zone.
Type:
Application
Filed:
August 18, 2004
Publication date:
January 10, 2008
Applicants:
Centre National De La Recherche Scientifque-CNRS, Ecole Normale Superieure De Cachan
Abstract: The invention relates to a device useful for non-invasive detection of the properties of a medium by means of interferometry. The device comprises an optical source which is used for illuminating a zone of the medium that is to be probed with a light beam, and an interferometer for splitting the light beam into a reference beam and a probe beam. The interferometer has a cutoff frequency for the automatic control of respective path lengths of the reference beam and of the probe beam. The device also comprises scanning means which, together with the probe beam, are used to scan the zone to be probed at an image acquisition frequency greater than the cutoff frequency.
Type:
Application
Filed:
August 18, 2004
Publication date:
March 29, 2007
Applicants:
Centre National De La Recherche Scientifque-CNRS, Ecole Normale Superieure De Cachan
Abstract: The present invention relates to a bone system model comprising a mineralized matrix and osteoblasts, chararacterized in that the osteoblasts are deposited onto the matrix so as to form a layer at confluence and/or nodules, and the osteoclasts are deposited onto said layer and/or said nodules, and also to bone system models affected by various pathologies. The invention also covers the uses for carrying out screenings and tests for aggressiveness and for toxicity.
Type:
Application
Filed:
June 11, 2004
Publication date:
March 22, 2007
Applicants:
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE NORMALE SUPERIEURE DE LYON
Inventors:
Pierre Jurdic, Olivier Destaing, Frederic Saltel, Edith Bonnelye
Abstract: The invention relates to a composition comprising a macromolecule or particle having one or several hydrophobic domains on the surface thereof whereby at least one transducer peptide is adsorbed thereon. Said composition can be used to introduce the macromolecule or particle into living cells.
Type:
Application
Filed:
December 31, 2003
Publication date:
March 8, 2007
Applicants:
Centre National De La Recherche Scientifique, Ecole Normale Superieure
Abstract: An electronic circuit provided with a piezoelectric transformer for driving an electronic component. The transformer is integrated in the circuit, a first layer of the circuit having a first primary piezoelectric plate integrated therein, a second layer having a secondary piezoelectric plate integrated therein and connected to the electronic component, and an intermediate layer comprising an insulating material is interposed between the primary and secondary plates.
Type:
Application
Filed:
April 29, 2004
Publication date:
October 26, 2006
Applicants:
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE-CNRS, ECOLE NORMALE SUPERIEURE DE CACHAN
Abstract: The invention concerns a method for optical recording of data on a photosensitive storage medium, characterized in that the data are encoded according to different possible states for the various components of a non-linear susceptibility tensor of the photosensitive medium and it consists in irradiating simultaneously at least a point of said support with write beams whereof the polarization is controlled for optical recording of a given non-linear susceptibility tensor on the photosensitive medium.
Type:
Grant
Filed:
January 3, 2001
Date of Patent:
April 11, 2006
Assignees:
France Telecom, Centre National de la Recherche Scientifique (CNRS), Ecole Normale Superieure de Cachan
Abstract: The invention relates to a method for characterizing a ferroelectric material, comprising application of an electric voltage to a sample of said ferroelectric material, measuring the electric current flowing through said sample, and joint treatment of the applied voltage signal and the measured current signal in order to provide representation data characterizing the polarization of the ferroelectric material. The method also includes controlling the applied electric voltage in such a way that superpositioning can be performed for a first current component having a large signal amplitude at a first frequency and a second current component having a second small signal amplitude at a second frequency which is much greater than the first frequency, and identifying the characteristics of the ferromagnetic material respectively associated with locally reversible polarization effects and locally irreversible polarization effects.
Type:
Grant
Filed:
September 16, 2003
Date of Patent:
March 7, 2006
Assignees:
Centre Nationa de la Recherche Scientifique-CNRS, Ecole Normale Superieure de Cachan
Abstract: The invention relates to a method for characterizing a ferroelectric material, comprising application of an electric voltage to a sample of said ferroelectric material, measuring the electric current flowing through said sample, and joint treatment of the applied voltage signal and the measured current signal in order to provide representation data characterizing the polarization of the ferroelectric material. The method also includes controlling the applied electric voltage in such a way that superpositioning can be performed for a first current component having a large signal amplitude at a first frequency and a second current component having a second small signal amplitude at a second frequency which is much greater than the first frequency, and identifying the characteristics of the ferromagnetic material respectively associated with locally reversible polarization effects and locally irreversible polarization effects.
Type:
Application
Filed:
September 16, 2003
Publication date:
November 10, 2005
Applicants:
Centre National De La Recherche Scientifique-cnrs, Ecole Normale Superieure De Cachan
Abstract: A pharmaceutical composition for the treatment, prevention or diagnosis of a tumoral pathology comprising an active agent which stabilizes an actin network of a cellular cytoskeleton.
Type:
Application
Filed:
December 18, 2003
Publication date:
September 30, 2004
Applicants:
Bioalliance Pharma, a corporation of France, Ecole Normale Superieure de Cachan, a corporation of France, Institut Gustave Roussy - IGR, a corporation of France, Centre National de la Recherche Scientifique - CNRS, a corporation of France
Inventors:
Christian Auclair, Valerie Amsellem, Martial Hervy, Frederic Subra
Abstract: A culture medium for culturing chicken embryonic stem (ES) cells is disclosed. The culture medium is used for supporting avian ES cell cultures. The components of the avian ES cell media include cytokines, fibroblast growth factors, insulin-like growth factors and stem cell growth factors and anti-retinoic acid antibody. The culture medium is substantially free of active retinoic acid. A method for culturing avian ES cells and the resulting products are also disclosed.
Type:
Grant
Filed:
May 12, 1997
Date of Patent:
September 5, 2000
Assignees:
Institute National de la Recherche Agronomique, Centre National de la Recherche Scientifique (CNRS), Ecole Normale Superieure de Lyon
Abstract: A device for a linear actuator, including a mobile assembly moving relative to a stator in a traveling direction. The assembly includes an excitation winding and an armature comprising pole pieces and permanent magnets. The stator is a simple guide tube defining the path of the mobile assembly, and may be made from a profiled ferromagnetic material, with holes extending through two walls thereof to define stator poles in two rows mutually longitudinally offset by a half pitch.
Type:
Grant
Filed:
May 3, 1995
Date of Patent:
August 26, 1997
Assignee:
Ecole Normale Superieure de Cachan (Lesir)
Inventors:
Jean Lucidarme, Michel Lecrivain, Bernard Multon, Laurent Prevond