Patents Assigned to Ecole Polytechnique
-
Patent number: 11351810Abstract: The present invention proposes a method for producing an authenticable moiré shape that simultaneously moves and shows a beating effect. The method relies on a combination of the 1D or the 2D moiré and the level line moiré. When tilting a compound showing such a moiré, the moiré shape moves, its intensity levels change significantly but its shape remains the same and is recognizable. Embodiments comprise a base layer made of patterned metallic tiny shapes and a revealing layer made of a 1D array of cylindrical lenslets or of a 2D array of spherical or aspherical lenslets.Type: GrantFiled: September 10, 2020Date of Patent: June 7, 2022Assignee: Ecole Polytechnique Fédérale de Lausanne (EPFL)Inventors: Thomas Walger, Roger D. Hersch, Jürgen Brugger
-
Publication number: 20220170920Abstract: One embodiment of the present invention concerns a biosensor for sensing stress hormone cortisol concentration in a biofluid. The biosensor comprises: an electrical transistor transducer comprising a transistor gate electrode; a sensing electrode element comprising a metal element having a biofluid facing surface, and a graphene layer on the biofluid facing surface of the metal element, the sensing electrode element being connected to the transistor gate electrode by an electrical connector to form an extended gate configuration with the transistor gate electrode; and a reference electrode configured to be in contact with the biofluid, and configured to electrically bias the transistor gate electrode through the biofluid. The sensing electrode element is functionalised by at least a layer of aptamers placed indirectly or directly on the graphene layer, and configured to catch cortisol hormones in the biofluid to thereby change a surface potential of the sensing electrode element.Type: ApplicationFiled: December 1, 2021Publication date: June 2, 2022Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Mihai Adrian IONESCU, Sheibani SHOKOOFEH
-
Patent number: 11331009Abstract: Presented herein are devices for collecting and/or channeling a biofluid (e.g., sweat, tears, saliva) and detecting and/or quantifying one or more biomarkers in the biofluid. The one or more biomarkers may include, for example, ions, salts thereof, hormones and/or steroids, proteins, metabolites and organic compounds. In certain embodiments, the devices described herein include a specially designed interface and a zero-energy micro pump that allow the device to be comfortably affixed directly to the skin of a user while biofluid is efficiently and non-invasively collected from the skin of the user. In certain embodiments, the biofluid collection and sensing device is housed on or in another wearable device, such as a wrist band or a smart watch. In certain embodiments, the devices described herein are disposable (e.g., after a certain period of use and/or wear the device can be disposed and replaced with a low-cost replacement).Type: GrantFiled: March 6, 2018Date of Patent: May 17, 2022Assignees: Xsensio SA, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Mihai Adrian Ionescu, Johan Frédéric Longo, Fabien Patrick Wildhaber, Hoël Maxime Guérin, Francesco Bellando, Erick García Cordero
-
Patent number: 11333776Abstract: A system for characterising a beam of charged particles. The system includes a stack comprising an ultra-thin pattern formed from an electrically conductive material; a thin substrate bearing the pattern. The stack forms an emitting electrode able to emit secondary electrons in proximity to a surface of the pattern when the emitting electrode is passed through by the beam of charged particles.Type: GrantFiled: February 5, 2019Date of Patent: May 17, 2022Assignees: ECOLE POLYTECHNIQUE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Denis Bernard, Bruno Boyer, Pascal Manigot, Christophe Thiebaux, Marc Verderi
-
Patent number: 11329229Abstract: The present invention relates to a compound of formula (I) based on enamine derivatives and used as organic hole conductors or hole transporting material in an optoelectronic or photoelectrochemical device. The present invention relates to the hole transporting compounds based on enamine derivatives for efficiency perovskite or dye sensitized solar cells and optoelectronic devices, organic light-emitting diode (OLED), field-effect transistors (FET).Type: GrantFiled: September 15, 2017Date of Patent: May 10, 2022Assignees: KAUNO TECHNOLOGIES UNIVERSITETAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSAANE (EPFL)Inventors: Vytautas Getautis, Maryte Daskeviciene, Tadas Malinauskas, Mohammad Khaja Nazeeruddin, Sanghyun Paek, Kasparas Rakstys
-
Publication number: 20220127310Abstract: Aerolysin polypeptides and/or mutant aerolysin monomers include modified amino acid sequences that could have improved substrate analyte, such as (poly)nucleotide and peptide, improved reading properties such as enhanced substrate analyte capture and improved substrate analyte recognition and/or discrimination. Also, aerolysin pores may be derived from the mutant monomers as well as apparatuses and devices may include modified aerolysin polypeptides. Further, methods of using modified aerolysin proteins and pores derive therefrom may be used in characterizing and/or sequencing a polymeric molecule or may be for use as molecular sensors.Type: ApplicationFiled: October 28, 2020Publication date: April 28, 2022Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)Inventors: Matteo DAL PERARO, Chan CAO
-
Patent number: 11309896Abstract: A reconfigurable logic circuit comprises first, second and third switching circuits arranged for receiving first, second and third input bits, respectively, and each arranged for being configured in a mode wherein the corresponding input bit is passed on or in a mode; a first exclusive OR logic block operable on the outputs of the first, second and third switching circuits and arranged to output a sum bit; fourth, fifth and sixth switching circuits arranged for receiving a fourth, fifth and sixth input bits and arranged for being configured in a mode; first, second and third AND logic blocks, each arranged for receiving a different pair of the outputs of certain switching circuits; a second exclusive OR logic block operable on the outputs of certain AND logic blocks and arranged to produce a carry output bit.Type: GrantFiled: November 19, 2018Date of Patent: April 19, 2022Assignees: KATHOLIEKE UNIVERSITEIT LEUVEN, UNIVERSITÀ DELLA SVIZZERA ITALIANA, ECOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE (EPFL)Inventors: Nele Mentens, Francesco Regazzoni, Edoardo Charbon
-
Patent number: 11298968Abstract: A method for marking a product (1) with a photoluminescent mark, said mark comprising a photoluminescent portion (10) which is transparent under normal light conditions and revealed by photoluminescence under UV illumination, said mark further comprising a non photoluminescent portion (9) which is transparent under normal light conditions as well s under UV illumination, said method comprising: deposing on said product a stack, said stack comprising alternatively layers (2,4) such as AlN, with a thickness of less than 1 micron and layers (3) of a second material, such as GaN with a thickness of less than 10 nm; raising the transparency of said non photoluminescent portion (10) with a deposition of transparent material (6) or incorporation of ions into said non photoluminescent portions.Type: GrantFiled: August 7, 2020Date of Patent: April 12, 2022Assignee: Ecole Polytechnique Federale de LausanneInventors: Nasser Hefyene, Nicolas Grandjean
-
Patent number: 11301750Abstract: The simplification of neural network models is described. For example, a method for simplifying a neural network model includes providing the neural network model to be simplified, defining a first temporal filter for the conveyance of input from a neuron to an other spatially-extended neuron along the arborized projection, defining a second temporal filter for the conveyance of input from yet another neuron to the spatially-extended neuron along the arborized projection, replacing, in the neural network model, the first, spatially-extended neuron with a first, spatially-constrained neuron and the arborized projection with a first connection extending between the first, spatially-constrained neuron and the second neuron, wherein the first connection filters input from the second neuron in accordance with the first temporal filter and a second connection extending between the first spatially-constrained neuron and the third neuron.Type: GrantFiled: April 2, 2018Date of Patent: April 12, 2022Assignee: Ecole Polytechnique Federale De Lausanne (EPFL)Inventors: Henry Markram, Wulfram Gerstner, Marc-Oliver Gewaltig, Christian Rössert, Eilif Benjamin Muller, Christian Pozzorini, Idan Segev, James Gonzalo King, Csaba Erö, Willem Wybo
-
Publication number: 20220109457Abstract: Various embodiments are directed to Reed-Muller decoding systems and methods based on recursive projections and aggregations of cosets decoding, exploiting the self-similarity of RM codes, and extended with list-decoding procedures and with outer-code concatenationsType: ApplicationFiled: January 17, 2020Publication date: April 7, 2022Applicants: The Trustees of Princeton University, Ecole Polytechnique Fédérale de Lausanne (EPFL)Inventors: Min Ye, Emmanuel Abbe
-
Publication number: 20220101105Abstract: A computer-implemented method for training a deep-learning generative model configured to output 3D modeled objects each representing a mechanical part or an assembly of mechanical parts. The method comprises obtaining a dataset of 3D modeled objects and training the deep-learning generative model based on the dataset. The training includes minimization of a loss. The loss includes a term that penalizes, for each output respective 3D modeled object, one or more functional scores of the respective 3D modeled object. Each functional score measures an extent of non-respect of a respective functional descriptor among one or more functional descriptors, by the mechanical part or the assembly of mechanical parts. This forms an improved solution with respect to outputting 3D modeled objects each representing a mechanical part or an assembly of mechanical parts.Type: ApplicationFiled: September 27, 2021Publication date: March 31, 2022Applicants: DASSAULT SYSTEMES, ECOLE POLYTECHNIQUE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Mariem MEZGHANNI, Maks OVSJANIKOV, Malika BOULKENAFED
-
Patent number: 11278465Abstract: The invention concerns an exoskeleton made of elements combined or attached together, said elements being adjustable or not and said elements being made in a sandwich construction. The invention also concerns a method to manufacture such an exoskeleton.Type: GrantFiled: September 11, 2017Date of Patent: March 22, 2022Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)Inventors: Tristan Vouga, Paul Bertusi, Mohamed Bouri
-
Publication number: 20220075171Abstract: A light microscope has a light source for illuminating a specimen, a photon-counting detector array with a plurality of photon-counting detector elements for measuring detection light coming from the specimen, wherein the photon-counting detector elements are configured to output respective measured photon count rates, and a control device for controlling the photon-counting detector array. The control device is configured to individually influence the measurable photon count rates which are simultaneously measurable with different photon-counting detector elements and/or which are consecutively measurable with the same photon-counting detector element. Furthermore, in an imaging method the measurable photon count rates of photon-counting detector elements are individually influenced to increase the signal-to-noise ratio for the photon-counting detector array.Type: ApplicationFiled: January 25, 2019Publication date: March 10, 2022Applicants: Carl Zeiss Microscopy GmbH, Ecole Polytechnique Federale de LausanneInventors: Tiemo ANHUT, Daniel SCHWEDT, Ivan Michel ANTOLOVIC, Claudio BRUSCHINI, Edoardo CHARBON
-
Publication number: 20220072892Abstract: The present invention proposes a method for producing an authenticable moiré shape that simultaneously moves and shows a beating effect. The method relies on a combination of the 1D or the 2D moiré and the level line moiré. When tilting a compound showing such a moiré, the moiré shape moves, its intensity levels change significantly but its shape remains the same and is recognizable. Embodiments comprise a base layer made of patterned metallic tiny shapes and a revealing layer made of a 1D array of cylindrical lenslets or of a 2D array of spherical or aspherical lenslets.Type: ApplicationFiled: September 10, 2020Publication date: March 10, 2022Applicant: Ecole Polytechnique Fédérale de Lausanne (EPFL)Inventors: Thomas Walger, Roger D. Hersch, Jürgen Brugger
-
Patent number: 11261093Abstract: A process for the nitrogen doping of a material includes a set of carbon atoms in the sp2 hybridization state. The process further includes the material not being oxidized beforehand, then placing the material in contact with dinitrogen. Irradiating the material and the dinitrogen placed in contact with a beam of electrons or of light ions whose energy is greater than or equal to 0.1 MeV, to obtain a material wherein some of the carbon atoms in the sp2 hybridization state is nitrogen-doped.Type: GrantFiled: September 15, 2017Date of Patent: March 1, 2022Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ÉCOLE POLYTECHNIQUE, COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVESInventors: Catherine Corbel, Irina Shchedrina, Jean-Philippe Renault
-
Patent number: 11256157Abstract: The invention relates to a device comprising: a laser source emitting a first beam with a central wavelength ?1 lying between 1010 nm and 1050 nm, a spectral supercontinuum generator downstream of the laser source, generating a second beam with a central wavelength ?2 lying between 1670 nm and 1730 nm from a part of the first beam, an optical parametric amplification system downstream of the spectral supercontinuum generator, generating a third beam with a central wavelength ?3 lying between 2540 nm and 2690 nm from at least a part of the second beam and a part of the first beam, and a second harmonic generator downstream of the optical parametric amplification system, the second harmonic generator generating a fourth beam with a central wavelength ?4 lying between 1270 nm and 1345 nm from at least a part of the third beam.Type: GrantFiled: June 5, 2018Date of Patent: February 22, 2022Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ECOLE POLYTECHNIQUEInventors: Frédéric Druon, Marc Hanna, Philippe Rigaud, Khmaies Guesmi, Emmanuel Beaurepaire, Willy Supatto, Pierre Mahou, Lamiae Abdeladim
-
Patent number: 11257974Abstract: The present invention relates to a solar cell comprising a heterojunction photoelectric device comprising, a front electrode layer, a back electrode layer comprising a metallic contact layer, a light-absorbing silicon layer arranged between said front electrode and said back electrode layers and a doped silicon-based layer arranged between said light-absorbing silicon layer and said back electrode layer, characterized in that said heterojunction photoelectric device further comprises a wide band gap material layer having an electronic band gap greater than 1.4 eV, said wide band gap material layer being applied on a surface of the light-absorbing silicon layer between said light-absorbing silicon layer and said doped silicon-based layer. The present heterojunction layer or stack of layers is compatible with thermal annealing and firing processes at T above 600° C.Type: GrantFiled: November 13, 2017Date of Patent: February 22, 2022Assignee: ECOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE (EPFL)Inventors: Philipp Löper, Andrea Ingenito, Christophe Ballif, Gizem Nogay
-
Patent number: 11248301Abstract: The present invention relates to a photo-electrochemical device for production of a gas, liquid or solid using concentrated electromagnetic irradiation. The device comprises a photovoltaic component configured to generate charge carriers from the concentrated electromagnetic irradiation; and an electrochemical component configured to carry out electrolysis of a reactant. The photovoltaic component contacts the electrochemical component at a solid interface to form an integrated photo-electrochemical device; and further includes at least one reactant channel or a plurality of reactant channels extending between the photovoltaic component and the electrochemical component to transfer heat and the reactant from the photovoltaic component to the electrochemical component. The integrated photo-electrochemical device and auxiliary devices (such as concentrator, flow controllers) build a system which can flexibly react to changes in operating condition and guarantee best performance.Type: GrantFiled: August 18, 2017Date of Patent: February 15, 2022Assignee: ECOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE (EPFL)Inventors: Saurabh Tembhurne, Meng Lin, Sophia Haussener
-
Patent number: 11252352Abstract: The present invention relates to a pixel sensor cell (1) for a CMOS sensor device comprising: —a photodiode (11) for generating photoelectrons; —a first transfer transistor (12) coupling the photodiode (11) with an intermediate node (IN) and configured to be controlled by a first control signal (TX1); —a gain reducing capacitance (CHD) applied on the intermediate node (IN); —a second transfer transistor (14) coupling the intermediate node (IN) with a sense node (SN) and configured to be controlled by a second control signal (TX2); —an output buffer (15) coupled with the sense node (SN) and configured to amplify a potential on the sense node (SN).Type: GrantFiled: November 20, 2017Date of Patent: February 15, 2022Assignee: ECOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE (EPFL)Inventor: Assim Boukhayma
-
Patent number: 11246943Abstract: Peptides that specifically bind erythrocytes are described. These are provided as peptidic ligands having sequences that specifically bind, or as antibodies or fragments thereof that provide specific binding, to erythrocytes. The peptides may be prepared as molecular fusions with therapeutic agents, tolerizing antigens, or targeting peptides. Immunotolerance may be created by use of the fusions and choice of an antigen on a substance for which tolerance is desired.Type: GrantFiled: September 26, 2019Date of Patent: February 15, 2022Assignee: École Polytechnique Fédérale de Lausanne (EPFL)Inventors: Jeffrey A. Hubbell, Stephan Kontos, Karen Y. Dane