Patents Assigned to ÉCOLE NORMALE SUPÉRIEURE DE PARIS
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Patent number: 11808627Abstract: A photoconductive switch for generating or detecting terahertz radiation (TR) is provided. The photoconductive switch may comprise at least a first and a second pair of electrodes (EV, EH, EGR) on a surface (SS) of a photoconductive substrate, wherein the electrodes of the first pair are separated by a first gap comprising at least a plurality of first rectilinear sections (GV) extending along a first direction (x) and the electrodes of the second pairs are separated by a second gap comprising at least a plurality of second sections (GH) extending along a second direction (y), different from the first direction. The photoconductive switch may further comprise a patterned opaque layer (PML) selectively masking portions of the gaps between the electrodes. Methods and devices for generating and detecting terahertz radiation comprising such photoconductive switches are also provided.Type: GrantFiled: March 28, 2019Date of Patent: November 7, 2023Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, SORBONNE UNIVERSITE, ECOLE NORMALE SUPERIEURE DE PARIS, UNIVERSITÉ PARIS CITÉInventors: Kenneth Maussang, Sukhdeep Dhillon, Jerome Tignon
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Patent number: 11426704Abstract: The use of porous crystalline solids constituted of a metal-organic framework (MOF) for the capture of polar volatile organic compounds (VOCs). In particular, the MOF of interest are material having an average pores sizes of 0.4 to 0.6 nm and an hydrophobic core formed by a metal oxide and/or hydroxide network connected by linkers, the linkers being selected from the group including (i) C6-C24 aromatic polycarboxylate linkers, such as benzyl or naphtyl di-, tri- or tetracarboxylate, and (ii) C6-C16 polycarboxylate aliphatic linkers; the linkers bearing or not apolar fluorinated groups, e.g. —(CF2)n—CF3 groups, n being a integer from 0 to 5, preferably 0 ou 3, and/or apolar C1-C20 preferably C1-C4 alkyl groups, e.g. —CH3 or —CH2—CH3, grafted directly to the linkers and pointing within the pores of the MOF.Type: GrantFiled: September 12, 2018Date of Patent: August 30, 2022Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE NORMALE SUPERIEURE DE PARIS, ECOLE SUPERIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS, UNIVERSITÉ DE VERSAILLES—SAINT-QUENTIN-EN-YVELINES, INSTITUTO SUPERIOR TÉCNICOInventors: Christian Serre, Moisés L. Pinto
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Publication number: 20210030297Abstract: According to one aspect, the present description relates to a portable device (10) for acquiring electroencephalographic (EEG) signals emitted by a user. The portable device comprises a flexible support (11) intended to fit a localized region of the skull of the user and a set of sensors (13) of electrical signals generated by the neuronal activity of the user, arranged on said support (11) so as to form contacts with the scalp when the device is worn by the user. For each sensor, an electronic circuit for filtering and amplifying electrical signals detected by said sensor is incorporated in the flexible support (11) and forms, with said sensor, an active electrode. The portable device also comprises a housing (12) comprising an electronic system for processing signals from said electronic filtering and amplification circuits, said housing being linked mechanically to the flexible support to form, with said support, a means of attachment to a garment or accessory (101) intended to be worn by the user.Type: ApplicationFiled: February 12, 2019Publication date: February 4, 2021Applicants: Centre National de la Recherche Scientifique, ECOLE NORMALE SUPERIEURE DE PARIS, PARIS SCIENCES ET LETTRES - QUARTIER LATIN, Ecole des Hautes Etudes en Sciences Sociales, ECOLE NATIONALE SUPERIEURE DES ARTS DECORATIFSInventors: Sid Kouider, Hao Zhang, Antoine Goupille, Jeanne Vicerial, Guillaume Ployart, Arthur Biancarelli, Gaelle Gervais
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Publication number: 20200297263Abstract: A method for determining the focus of the visual attention of an individual from electroencephalographic signals. At least one visual stimulus to be displayed is generated from at least one graphical object, a visual stimulus being an animated graphical object obtained by applying to a graphical object a temporal succession of elementary transformations that is temporally parameterized by a corresponding modulation signal. From a plurality of electroencephalographic signals produced by the individual focusing his visual attention to one of the visual stimuli, a modulation signal is reconstructed. A visual stimulus corresponding to the modulation signal for which the degree of statistical dependence with the reconstructed modulation signal is higher than a first threshold is identified.Type: ApplicationFiled: September 6, 2018Publication date: September 24, 2020Applicants: Centre National de la Recherche Scientifique, ECOLE NORMALE SUPERIEURE DE PARIS, Ecole des Hautes Etudes en Sciences SocialesInventors: Sid KOUIDER, Jean-Maurice LEONETTI, Nicolas BARASCUD, Robin ZERAFA
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Publication number: 20190379817Abstract: High dynamic range (HDR) images are generated on the basis of a plurality of images obtained by non-destructive reading of an image sensor, called NDRO images. An HDR image generation method includes: the determination of a criterion of desired quality for the HDR image; at least two non-destructive readings of the sensor delivering at least two successive NDRO images; the selection, as a function of the criterion of desired quality, of the first and of the last NDRO image to be used to generate the HDR image; the generation of the HDR image on the basis of information extracted from a series of successive NDRO images starting with the first and terminating with the last NDRO image to be used; the storage of a single image at one and the same time throughout the entire HDR generation phase.Type: ApplicationFiled: December 22, 2017Publication date: December 12, 2019Applicants: Centre National de la Recherche Scientifique, Sorbonne Université, Université Paris Diderot - Paris 7 Diderot Valorisation, Ecole Normale Superieure de Paris, Université de BourgogneInventors: David DARSON, Julien DUBOIS, Barthélémy HEYRMAN, Dominique GINHAC, Mustapha BOUDERBANE
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Patent number: 10267732Abstract: A method for detection of at least one reversibly photo-convertible fluorescent species, comprises the following steps: a) illumination of a sample comprising said or at least one of the reversibly photo-convertible fluorescent species by a periodically modulated illuminating light; and b) detection of fluorescent emission emitted by the sample thus illuminated; wherein the method further comprises the following step: c) extraction of the amplitude of the intensity component of the fluorescent emission exhibiting the same periodicity as the periodically modulated illuminating light and a phase quadrature with respect to the same; and wherein the mean intensity of the illuminating light and the modulation frequency of the same are chosen to maximize the amplitude of the intensity component of the fluorescent emission.Type: GrantFiled: November 21, 2014Date of Patent: April 23, 2019Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, INSTITUT CURIE, ECOLE NORMALE SUPERIEURE DE PARIS, UNIVERSITE PIERRE ET MARIE CURIEInventors: Ludovic Jullien, Thomas Le Saux, Arnaud Gautier, Vincent Croquette, Nath Sarang, Pencheng Wang, Jérôme Querard, Samantha Albright