Patents Assigned to Ecole Polytechnique
  • Publication number: 20170323757
    Abstract: A device for collimation or focusing of a relativistic electron packet, obtained in particular by laser-plasma acceleration, including a gas cloud and a laser capable of emitting a laser pulse focused in the gas cloud in order to create therein a wave of focusing electric and magnetic fields. The invention also relates to a device for emission of a collimated or focused relativistic electron packet. The invention further relates to a collimation or focusing method for a relativistic electron packet, and to methods for emission of a collimated or focused relativistic electron packet.
    Type: Application
    Filed: November 4, 2015
    Publication date: November 9, 2017
    Applicants: ECOLE POLYTECHNIQUE, ECOLE NATIONALE SUPÉRIEURE DE TECHNIQUES AVANCÉES
    Inventors: Cédric THAURY, Rémi LEHE, Victor MALKA, Emilien GUILLAUME
  • Patent number: 9812658
    Abstract: The present invention relates to compounds of formula (I) based on a porphyrin core and a ?-conjugated linker or acceptor introduced between the porphyrin core and an anchoring group having a high absorption coefficient covering the whole UV-Visible and near-infrared spectral response, and their use as sensitizer or dye and an electrochemical or optoelectronic device including a compound of the invention.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: November 7, 2017
    Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Chenyi Yi, Fabrizio Giordano, Shaik Mohammad Zakeeruddin, Michael Graetzel
  • Publication number: 20170308667
    Abstract: A mechanical teleoperated device for remote manipulation includes a slave unit having a number of slave links interconnected by a plurality of slave joints; an end-effector connected to the slave unit; a master unit having a corresponding number of master links interconnected by a plurality of master joints; and a handle connected to a distal end of the master unit. The device further includes first device arranged to kinematically connect the slave unit with the master unit, second device arranged to kinematically connect the end-effector with the handle, and a mechanical constraint device configured to ensure that one master link of the master unit is guided along its longitudinal axis so that the corresponding slave link of the slave unit always translates along a virtual axis parallel to the longitudinal axis of the guided master link in the vicinity of the remote manipulation when the mechanical teleoperated device is operated.
    Type: Application
    Filed: June 26, 2017
    Publication date: October 26, 2017
    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Ricardo Daniel Rita BEIRA, Lionel FLACTION
  • Patent number: 9791684
    Abstract: The invention relates to an optical coherence microscopy system for fast, phase resolved imaging by means of optical coherence microscopy with decoupled illumination and detection apertures, producing a dark-field effect with an enhanced optical contrast. The setup uses a light source with an appropriate temporal coherence, an interferometer and an array detector combined with a spectrometer. The dark-field effect is produced by optical filter means in the illumination and detection paths, positioned in conjugated planes of the sample microscope objective. These optical means comprise for example refractive or diffractive elements, amplitude or phase masks, or programmable spatial light modulators. The object is scanned via a scanning unit allowing a point scan of the object.
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: October 17, 2017
    Assignee: Ecole Polytechnique Fédérale de Lausanne (EPFL)
    Inventors: Martin Villiger, Christophe Pache, Theo Lasser
  • Patent number: 9794525
    Abstract: Systems and methods for tracking interacting objects may acquire, with a sensor, and two or more images associated with two or more time instances. A processor may generate image data from the two or more images. The processor may apply an extended Probability Occupancy Map (POM) algorithm to the image data to obtain probability of occupancy for a container class of potentially interacting objects, probability of occupancy for a containee class of the potentially interacting objects, and a size relationship of the potentially interacting objects, over a set of discrete locations on a ground plane for each time instance. The processor may estimate trajectories of an object belonging to each of the two classes by determining a solution of a tracking model on the basis of the occupancy probabilities and a set of rules describing the interaction between objects of different or the same classes.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: October 17, 2017
    Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Engin Turetken, Pascal Fua, Francois Fleuret, Xinchao Wang
  • Patent number: 9791682
    Abstract: A nonlinear optical microscope is provided, including source of a pulsed laser beam; a spatial light modulator for modulating the spatial profile of the pulsed laser beam; an objective for guiding the modulated beam towards a slide intended to carry a specimen; and a detector for collecting signals originating from the specimen, wherein the spatial light modulator is designed to modulate the intensity and/or the phase of the pulsed laser beam on the rear pupil of the objective to produce a beam that is axially extended and confined in one or two lateral directions after focusing by the objective, and wherein the slide is placed on a motorized stage of a histology slide scanner assembly.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: October 17, 2017
    Assignees: ECOLE POLYTECHNIQUE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Marie-Claire Schanne-Klein, Emmanuel Jean-Marc Beaurepaire, Mathias Strupler, Delphine Debarre, Nicolas Olivier, Pierre Mahou
  • Patent number: 9790325
    Abstract: Metallopolymers of formula (I) where R1 and R1?; and R2 and R2? are independently of each other, a C2-C10 alkyl group; X is CR3R3? or NR4; R3 and R3? are, independently of each other, as is R4, a C2-C10 alkyl group; L is a C4-C10 alkylene group; Ln1 and Ln2 are, independently of each other, chosen from the lanthanide cations; L1 and L2 are, independently of each other, chosen from the ?-diketonate ligands; T is a neutral bidentate Lewis base including two coordinating nitrogen atoms; ? represents a coordination of group T via the two nitrogen atoms of T to Ln1 and Ln2 respectively; Ln1 and Ln2 are, independently of each other, chosen from the lanthanide cations; L1 and L2 are, independently of each other, chosen from the ?-diketonate, picolinate or dipicolinate monoanionic ligands; 0.01<x<0.50; 0<y<0.49, with x+y=0.50.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: October 17, 2017
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS, ECOLE POLYTECHNIQUE
    Inventors: Alessandra Sergent, Gael Zucchi, Denis Tondelier, Bernard Geffroy
  • Publication number: 20170291697
    Abstract: An aerial vehicle, configured to transport cargo, and including a propulsion system and a foldable cage is described. The foldable cage is substantially linear while in a folded configuration, and substantially circular while in a deployed configuration. Moreover, the foldable cage includes a rods that form isosceles triangles. The rods are coupled together by flexible joints.
    Type: Application
    Filed: April 8, 2016
    Publication date: October 12, 2017
    Applicant: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Przemyslaw Mariusz Kornatowski, Stefano Mintchev, Dario Floreano
  • Patent number: 9779879
    Abstract: The present invention provides an improved redox couple for electrochemical and optoelectronic devices. The redox couple is based on a complex of a first row transition metal, said complex containing at least one mono-, bi-, or tridentate ligand comprising a substituted or unsubstituted ring or ring system comprising a five-membered N-containing heteroring and/or a six-membered ring comprising at least two heteroatoms, at least one of which being a nitrogen atom, said five- or six-membered heteroring, respectively, comprising at least one double bond. The invention also relates to electrolytes and to the devices containing the complex, and to the use of the complex as a redox couple. The invention further provides electrochemical and/or optoelectronic devices comprising a first and a second electrode and, between said first and second electrode, a charge transport layer, said a charge transport layer comprising tetracyanoborate ([B(CN)4]?) and a cationic metal complex functioning as redox-couple.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: October 3, 2017
    Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Mohammad Khaja Nazeeruddin, Michael Graetzel, Etienne Baranoff, Florian Kessler, Jun-Ho Yum, Aswani Yella, Hoi Nok Tsao, Shaik Mohammad Zakeeruddin
  • Patent number: 9778177
    Abstract: Embodiments of the subject invention relate to a method and apparatus for performing measurements using multiphoton or second harmonic generation (SHG) scattered radiation from a sample including a turbid (scattering) medium includes providing a beam of laser pulses from a laser source having high pulse energies and a repetition rate; splitting the beam of laser pulses into two or more partial beams and focussing and overlaying the partial beams on a sample including the turbid medium; and detecting multiphoton and second harmonic radiation scattered from the sample.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: October 3, 2017
    Assignee: ÉCOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE (EPFL)
    Inventors: Sylvie Roke, Carlos Macias Romero
  • Patent number: 9776742
    Abstract: A device for forming a quasi-neutral ion-electron beam, including: a chamber; a set of means for forming an ion-electron plasma in the chamber; and means for extracting and accelerating charged particles from the plasma out of the chamber. The particles are capable of forming the beam and the extraction and acceleration means that include a set of at least two grids located at one end of the chamber.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: October 3, 2017
    Assignees: ECOLE POLYTECHNIQUE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Dmytro Rafalskyi, Ane Aanesland
  • Patent number: 9774467
    Abstract: In a first aspect the invention provides a system that comprising a plurality of electronic modules, each one of the electronic modules configured for enabling automation of an electrical appliance to be connected to the electronic module. Each electronic module comprises at least a communication sub-part configured to enable communication over a power-line network with other modules, at least an acting means configured to act on an electrical voltage to be applied to the electrical appliance, at least a measurement means configured to measure a power consumption to be consumed by the electrical appliance, and an embedded intelligence means configured to process signals providing from or going to the at least one communication sub-part, the at least one acting means and the at least one measurement means.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: September 26, 2017
    Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Laurent Fabre, Maher Kayal, Fabrizio Lo Conte, Thierry Barras
  • Patent number: 9774191
    Abstract: The invention provides a method for coping with an unintentional islanding of an electrical distribution grid within a Commelec-type framework for the real-time control of micro-grids, of Resource Agents (RA) controlled by Grid Agents (GA), comprising at least maintain at any time before the unintentional islanding occurs a rating of all resource agents controlled by a same grid agent in view of their ability to be a slack resource, by computing the rating based on a power availability and on a state-of-energy of each resource, the state-of-energy quantifying an amount of energy that may be withdrawn from a potential slack irrespectively of a PQ profile, whereby the PQ profile describes bounds for active and reactive power that a resource can inject or absorb; and a shedding list of all the resources that have to be shed if a current best candidate slack resource is selected, the current best candidate slack resource being the slack resource having the best rating of all resources as determined in the step of
    Type: Grant
    Filed: September 6, 2015
    Date of Patent: September 26, 2017
    Assignee: ECOLE POLYTECHNIQUE FÉDÉRALE DE LAUSANNE (EPFL)
    Inventors: Mario Paolone, Jean-Yves Le Boudec, Andrey Bernstein, Lorenzo Enrique Reyes Chamarro
  • Patent number: 9768311
    Abstract: The present invention concerns a semiconductor tunneling Field-Effect device including a source, a drain, at least one elongated semiconductor structure extending in an elongated direction, a first gate, and a second gate. The first gate has a length extending in said elongated direction and is positioned on a first side of the at least one elongated semiconductor structure, and the second gate has a length extending in said elongated direction and is positioned on a second opposing side of the at least one elongated semiconductor structure. The first and second gates extend along the first and second sides of the at least one elongated semiconductor structure to define an overlap zone sandwiched between the first gate and the second gate, said overlap zone extending the full length of the first and/or second gate along the at least one elongated semiconductor structure.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: September 19, 2017
    Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Cem Alper, Livio Lattanzio, Mihai Adrian Ionescu, Luca De Michielis, Nilay Dagtekin
  • Patent number: 9768580
    Abstract: A Free Electron Laser source includes: a fiber-based laser having a plurality of amplifying fibers wherein an initial laser pulse is distributed and amplified, and element for grouping together the elementary pulses amplified in the fiber in order to form an a single amplified global laser pulse; a laser plasma accelerator wherein the global laser pulse generates relativistic electron beams, a beam focusing system transporting electron beams from the laser plasma accelerator, an undulator wherein relativistic electron beams generate an electromagnetic beam, and a beam separator system, wherein the electron beam and the electromagnetic beam are separated.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: September 19, 2017
    Assignee: ECOLE POLYTECHNIQUE
    Inventors: Toshiki Tajima, Gerard Mourou, Kazuhisa Nakajima
  • Patent number: 9760536
    Abstract: A method and device for reducing the computational complexity of a processing algorithm, of a discrete signal, in particular of the spectral estimation and analysis of bio-signals, with minimum or no quality loss, which comprises steps of (a) choosing a domain, such that transforming the signal to the chosen domain results to an approximately sparse representation, wherein at least part of the output data vector has zero or low magnitude elements; (b) converting the original signal in the domain chosen in step (a) through a mathematical transform consisting of arithmetic operations resulting in a vector of output data; (c) reformulating the processing algorithm of the original signal in the original domain into a modified algorithm consisting of equivalent arithmetic operations in the domain chosen in step (a) to yield the expected result with the expected quality quantified in terms of a suitable application metric; (d) combining the mathematical transform of step (b) and the equivalent mathematical operatio
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: September 12, 2017
    Assignee: Ecole Polytechnique Fédérale de Lausanne (EPFL)
    Inventors: Georgios Karakonstantis, Aviinaash Sankaranarayanan, Andreas Burg, Srinivasan Murali, David Atienza Alonso
  • Patent number: 9757039
    Abstract: A functional optical coherent imaging (fOCI) platform includes at least one active camera unit (ACU) having a coherent and/or a partially coherent light source, and means for spectral filtering and imaging a selected body area of interest; an image processing unit (IPU) for pre-processing data received from an ACU; at least one stimulation unit (STU) transmitting a stimulation to a subject; at least one body function reference measurement unit (BFMU); a central clock and processing unit (CCU), with interconnections to the ACU, the IPU, the STU, for collecting pre-processed data from the IPU, stimuli from the STU body function reference data from the BFMU in a synchronized manner; a post-processing unit (statistical analysis unit, SAU); and an operator interface (HOD.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: September 12, 2017
    Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Theo Lasser, Dimitri Van De Ville, Erica Martin-Williams, Marcel Leutenegger, Iwan Maerki, Michael Friedrich, Martin Villiger
  • Patent number: 9759805
    Abstract: An acoustic processing method for M acoustic receivers comprising the steps of: Determining a beamforming weight vector with M weights for the M acoustic receivers based on at least one the steering vector of at least one real acoustic source, on steering vectors of image sources of the at least one real acoustic source and on a first matrix depending on the covariance matrix of the noise and/or on at least one interfering sound source, wherein each of the image sources corresponds to one path of the acoustic signal between one of the at least one real source and one of the M acoustic receivers with at least one reflection; and linearly combining the M acoustic signals received at the M acoustic receivers on the basis of the M weights of the beamforming vector.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: September 12, 2017
    Assignee: Ecole Polytechnique Federale De Lausanne (EPFL)
    Inventors: Ivan Dokmanic, Robin Scheibler, Martin Vetterli
  • Patent number: 9761877
    Abstract: The use of a methylated amorphous silicon alloy as the active material in an anode of Li-ion battery is described. Lithium storage batteries and anodes manufactured using the material, as well as a method for manufacturing the electrodes by low-power PECVD are also described.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: September 12, 2017
    Assignees: ECOLE POLYTECHNIQUE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, CENTRE DE RECHERCHE EN TECHNOLOGIE DES SEMI-CONDUCTEURS POUR L'ENERGETIQUE (CRTSE)
    Inventors: Michel Rosso, Larbi Touahir, Abdelhak Cheriet, Ionel Solomon, Jean-Noel Chazalviel, Francois Ozanam, Noureddine Gabouze
  • Publication number: 20170252744
    Abstract: A method for handling, in a microfluidic system, microdrops which include samples, including the steps of forming, in an oil, microdrops of an aqueous solution containing a sample, the oil and/or the aqueous solution containing a sample including a gelling agent; trapping the microdrops by means of surface-tension traps pre-arranged in a trapping area; and at least partially gelling the oil in the trapping area and/or at least partially gelling the trapped microdrops.
    Type: Application
    Filed: October 17, 2014
    Publication date: September 7, 2017
    Applicants: ECOLE POLYTECHNIQUE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Charles BAROUD, Gabriel AMSELEM, Sébastien SART, Raphaël TOMASI