Patents by Inventor Liesbet Lagae

Liesbet Lagae has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11687031
    Abstract: A method for three-dimensional imaging of a sample (302) comprises: receiving (102) interference patterns (208) acquired using light-detecting elements (212), wherein each interference pattern (208) is formed by scattered light from the sample (302) and non-scattered light from a light source (206; 306), wherein the interference patterns (208) are acquired using different angles between the sample (302) and the light source (206; 306); performing digital holographic reconstruction applying an iterative algorithm to change a three-dimensional scattering potential of the sample (302) to improve a difference between the received interference patterns (208) and predicted interference patterns based on the three-dimensional scattering potential; wherein the iterative algorithm reduces a sum of a data fidelity term and a non-differentiable regularization term and wherein the iterative algorithm includes a forward-backward splitting method alternating between forward gradient descent (108) on the data fidelity term
    Type: Grant
    Filed: December 19, 2020
    Date of Patent: June 27, 2023
    Assignees: IMEC VZW, KATHOLIEKE UNIVERSITEIT LEUVEN
    Inventors: Zhenxiang Luo, Abdulkadir Yurt, Dries Braeken, Liesbet Lagae, Richard Stahl
  • Patent number: 11684915
    Abstract: The present disclosure relates to a fluid analyzing device that includes a sensing device for analyzing a fluid sample. The sensing device includes a microchip configured for sensing the fluid sample, and a closed micro-fluidic component for propagating the fluid sample to the microchip. The fluid sample can be provided to the micro-fluidic component via an inlet of the fluid analyzing device. And a vacuum compartment, which is air-tight connected to the sensing device, can create in the micro-fluidic component a suction force suitable for propagating the fluid sample through the micro-fluidic component.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: June 27, 2023
    Assignee: IMEC VZW
    Inventors: Peter Peumans, Liesbet Lagae, Paolo Fiorini
  • Patent number: 11241687
    Abstract: The present disclosure relates to devices and methods for analyzing a fluid sample. An example device comprises a fluidic substrate comprising a micro-fluidic component embedded therein, for propagating a fluid sample; a needle or inlet for providing the fluid sample which is fluidically connected to the micro-fluidic component; a lid attached to the fluidic substrate thereby at least partly covering the fluidic substrate and at least partly closing the micro-fluidic component; wherein the fluidic substrate is a glass fluidic substrate and wherein the lid is a microchip. The present disclosure also relates to a method for fabricating a fluid analysis device. The method comprises providing a fluidic substrate; providing a lid; attaching the lid to the fluidic substrate to close the fluidic substrate at least partly.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: February 8, 2022
    Assignee: IMEC VZW
    Inventors: Peter Peumans, Liesbet Lagae, Paolo Fiorini
  • Publication number: 20210191316
    Abstract: A method for three-dimensional imaging of a sample (302) comprises: receiving (102) interference patterns (208) acquired using light-detecting elements (212), wherein each interference pattern (208) is formed by scattered light from the sample (302) and non-scattered light from a light source (206; 306), wherein the interference patterns (208) are acquired using different angles between the sample (302) and the light source (206; 306); performing digital holographic reconstruction applying an iterative algorithm to change a three-dimensional scattering potential of the sample (302) to improve a difference between the received interference patterns (208) and predicted interference patterns based on the three-dimensional scattering potential; wherein the iterative algorithm reduces a sum of a data fidelity term and a non-differentiable regularization term and wherein the iterative algorithm includes a forward-backward splitting method alternating between forward gradient descent (108) on the data fidelity term
    Type: Application
    Filed: December 19, 2020
    Publication date: June 24, 2021
    Inventors: Zhenxiang LUO, Abdulkadir YURT, Dries BRAEKEN, Liesbet LAGAE, Richard STAHL
  • Patent number: 10928305
    Abstract: A sensor device for quantifying luminescent targets comprises a light source, a detector, a modulator, and a processor. The light source is adapted for exciting the luminescent target. The detector is adapted for detecting the luminescence of the luminescent target resulting in a measured signal which comprises a desired signal originating from the luminescent target and a background signal. The modulator is adapted for modulating a physical parameter resulting in a modulation of the desired signal which is different from the modulation of the background signal. The processor is configured to correlate the modulation of the physical parameter with the modulation of the desired signal and/or the modulation of the background signal.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: February 23, 2021
    Assignee: IMEC VZW
    Inventors: Peter Peumans, Liesbet Lagae, Willem Van Roy, Tim Stakenborg, Pol Van Dorpe
  • Patent number: 10875016
    Abstract: A micro analysis chip comprises an inlet and a fluid flow path communicating thereto. The fluid flow path comprises a first flow path, a second flow path, and a third flow path arranged continuously along a longitudinal direction of the fluid flow path. An antibody is bound on at least one peripheral surface selected from the group consisting of peripheral surfaces of the second and third flow paths. A cross-sectional area of the third flow path is constant or increased monotonically along a direction X from the second flow path toward the third flow path. A cross-sectional area of the second flow path is increased monotonically along the direction X from the one end to the other end of the second flow path. A cross-sectional area of the first flow path is larger than a cross-sectional area at the one end of the second flow path.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: December 29, 2020
    Assignees: PANASONIC CORPORATION, IMEC VZW
    Inventors: Shuji Sato, Yasuaki Okumura, Yukari Nishiyama, Tatsurou Kawamura, Ben Jones, Liesbet Lagae, Tim Stakenborg
  • Patent number: 10871447
    Abstract: Sensor devices for quantifying luminescent targets are described herein. An example device comprises a light source for exciting the targets, thus generating luminescence signals and a detector for detecting these signals, resulting in a detected signal which comprises a desired signal originating from the targets and a background signal. It moreover comprises a bleaching device for bleaching of at least part of the sources generating the background signal and a processor configured to trigger the bleaching device to start bleaching, and to trigger the light source for exciting the remaining luminescent targets which are not bleached, and to trigger the detector for detecting the luminescence signal of the remaining luminescent targets, so as to generate a measurement signal representative for the quantification of the luminescent targets.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: December 22, 2020
    Assignee: Imec VZW
    Inventors: Peter Peumans, Liesbet Lagae, Willem Van Roy, Tim Stakenborg, Pol Van Dorpe
  • Patent number: 10843922
    Abstract: The present disclosure relates to a device for analyzing a fluid sample. In one aspect, the device includes a fluidic substrate that comprises a micro-fluidic component embedded in the fluidic substrate configured to propagate a fluid sample via capillary force through the device and a means for providing a fluid sample connected to the micro-fluidic component. The device also includes a lid attached to the fluidic substrate at least partly covering the fluidic substrate and at least partly closing the micro-fluidic component. The fluidic substrate may be a silicon fluidic substrate and the lid may be a CMOS chip. In another aspect, embodiments of the present disclosure relate to a method for fabricating such a device, and the method may include providing a fluidic substrate, providing a lid, and attaching, through a CMOS compatible bonding process, the fluidic substrate to the lid to close the fluidic substrate at least partly.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: November 24, 2020
    Assignee: IMEC VZW
    Inventors: Liesbet Lagae, Peter Peumans
  • Patent number: 10845310
    Abstract: A sensor device for quantifying luminescent targets configured in an at least one dimensional pattern. The sensor device comprises a detector for obtaining an at least one dimensional pattern of measured signals, wherein the detector is adapted for detecting the luminescence of the luminescent targets, resulting in a measured pattern. The sensor device moreover comprises a processor configured to correlate the measured pattern with at least one reference pattern, so as to generate a measurement signal representative for the quantification of luminescent targets. The at least one reference pattern is a recorded pattern or an expected pattern. A recorded pattern is a pattern which is obtained by the detector before the measured pattern is obtained.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: November 24, 2020
    Assignee: IMEC VZW
    Inventors: Peter Peumans, Liesbet Lagae, Willem Van Roy, Tim Stakenborg, Pol Van Dorpe
  • Publication number: 20200348288
    Abstract: A method for analysis of cardiomyocyte function comprises: receiving (302) in a measurement position a substrate (110) carrying cardiomyocytes on a cell culturing surface; recording (304) electrical signals from the cardiomyocytes; simultaneously with said recording, acquiring (306) a sequence of images of the cardiomyocytes on the cell culturing surface based on detecting light wavefront information of reflected light; determining (308) an electrical representation relating to an intracellular and/or extracellular action potential, and/or an impedimetric electrical image of a cardiomyocyte based on the recorded electrical signals; and determining (310) a contractile representation relating to cellular deformation during contractility action of a group of cardiomyocytes based on the acquired sequence of images, wherein the electrical representation and the contractile representation apply to a common period of time.
    Type: Application
    Filed: December 19, 2018
    Publication date: November 5, 2020
    Inventors: Dries BRAEKEN, Thomas PAUWELYN, Liesbet LAGAE
  • Publication number: 20190346358
    Abstract: An active sieve device for the isolation and characterization of bio-analytes is provided, comprising a substrate for supporting the bio-analytes. The substrate comprises a plurality of interconnections and a plurality of regions, each region comprising a hole and at least one electrode embedded in or located on the substrate and electrically associated with the hole. Each region further comprises at least one transistor integrated in the substrate and operably connected to the at least one electrode and to at least one of the plurality of interconnections.
    Type: Application
    Filed: May 20, 2019
    Publication date: November 14, 2019
    Inventors: Tim Stakenborg, Chengxun Liu, Liesbet Lagae, Ronald Kox
  • Patent number: 10427156
    Abstract: The present disclosure relates to a fluid analysis device which comprises a sensing device for analyzing a fluid sample, the sensing device comprising a micro-fluidic component for propagating the fluid sample and a microchip configured for sensing the fluid sample in the micro-fluidic component; a sealed fluid compartment containing a further fluid, the compartment being fluid-tight connected to the sensing device and adapted for providing the further fluid to the micro-fluidic component when the sealed fluid compartment is opened; and an inlet for providing the fluid sample to the micro-fluidic component. Further, the present disclosure relates to a method for sensing a fluid sample using the fluid analysis device.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: October 1, 2019
    Assignee: IMEC VZW
    Inventors: Peter Peumans, Liesbet Lagae, Paolo Fiorini
  • Patent number: 10359363
    Abstract: A sensor device for quantifying luminescent targets. The device comprises a light source for exciting the targets, thus generating luminescence signals, and a detector for detecting these signals of the targets in a cell, resulting in a detected signal comprising a desired signal and a background signal. The detector has a spatial cell resolution and/or a time resolution that is so high that only a limited number of targets will be present in the cell when measuring at low concentration and/or that only a limited number of targets add to the cell in between two measurements. A change in the number of targets in the cell can be observed in the detected signal. The device comprises a processor configured to distinguish the desired and the background signal, and to combine the detected signals of the different cells and/or moments in time, to quantify the targets.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: July 23, 2019
    Assignee: IMEC VZW
    Inventors: Peter Peumans, Liesbet Lagae, Willem Van Roy, Tim Stakenborg, Pol Van Dorpe
  • Patent number: 10330580
    Abstract: A microfluidic magnetic selector comprises a microfluidic channel comprising at least one bifurcation, forming a selection portion of the selector and splitting the microfluidic channel into a main channel and at least one selection channel; at least one magnetic flux concentrator for concentrating a magnetic flux at the level of the bifurcation, and means for generating a magnetic field within the magnetic flux concentrator, and a controller for controlling magnetic pulses through the magnetic flux concentrator.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: June 25, 2019
    Assignee: IMEC VZW
    Inventors: Richard Min, Liesbet Lagae, Chengxun Liu, Chengjun Huang
  • Patent number: 10295451
    Abstract: A device for extracting at least one object characteristic of an object (106) is presented, the device comprising: a light sensor (101) for recording a hologram of an object and a processing unit (102) coupled to the light sensor and configured for extracting at least one object characteristic from the hologram; wherein the processing unit is configured for extracting the at least one object characteristic from a section of the hologram without reconstructing an image representation of the object. Further, a device (200) for sorting an object (106), a method for identifying an object and a method for sorting objects is presented.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: May 21, 2019
    Assignees: IMEC VZW, UNIVERSITEIT GENT
    Inventors: Bendix Schneider, Peter Bienstman, Joni Dambre, Geert Vanmeerbeeck, Liesbet Lagae
  • Patent number: 10267733
    Abstract: The present disclosure relates to semiconductor devices for detecting fluorescent particles. At least one embodiment relates to an integrated semiconductor device for detecting fluorescent tags. The device includes a first layer, a second layer, a third layer, a fourth layer, and a fifth layer. The first layer includes a detector element. The second layer includes a rejection filter. The third layer is fabricated from dielectric material. The fourth layer is an optical waveguide configured and positioned such that a top surface of the fourth layer is illuminated with an evanescent tail of excitation light guided by the optical waveguide when the fluorescent tags are present. The fifth layer includes a microfluidic channel. The optical waveguide is configured and positioned such that the microfluidic channel is illuminated with the evanescent tail. The detector element is positioned such that light from activated fluorescent tags can be received.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: April 23, 2019
    Assignee: IMEC VZW
    Inventors: Pol Van Dorpe, Liesbet Lagae, Peter Peumans, Andim Stassen, Philippe Helin, Bert Du Bois, Simone Severi
  • Publication number: 20180361381
    Abstract: The present disclosure relates to a fluid analyzing device that includes a sensing device for analyzing a fluid sample. The sensing device includes a microchip configured for sensing the fluid sample, and a closed micro-fluidic component for propagating the fluid sample to the microchip. The fluid sample can be provided to the micro-fluidic component via an inlet of the fluid analyzing device. And a vacuum compartment, which is air-tight connected to the sensing device, can create in the micro-fluidic component a suction force suitable for propagating the fluid sample through the micro-fluidic component.
    Type: Application
    Filed: August 8, 2018
    Publication date: December 20, 2018
    Applicant: IMEC VZW
    Inventors: Peter Peumans, Liesbet Lagae, Paolo Fiorini
  • Patent number: 10124338
    Abstract: The present disclosure relates to microbubble generator devices for deflecting objects in a liquid, systems for sorting objects that utilize such devices, and methods for fabricating such devices. At least one embodiment relates to a micro-fluidic device for deflecting objects in a liquid. The device includes a substrate for providing an object-containing liquid thereon. The device also includes a microbubble generator that includes at least one microbubble generating element. The microbubble generator is located on a surface of the substrate and in direct contact with the object-containing liquid when the object-containing liquid is provided on the substrate. The at least one microbubble generating element is configured to deflect a single object in the object-containing liquid through generation of a plurality of microbubbles.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: November 13, 2018
    Assignee: IMEC VZW
    Inventors: Chengxun Liu, Peter Peumans, Liesbet Lagae, Bivragh Majeed
  • Publication number: 20180195945
    Abstract: A device for extracting at least one object characteristic of an object (106) is presented, the device comprising: a light sensor (101) for recording a hologram of an object and a processing unit (102) coupled to the light sensor and configured for extracting at least one object characteristic from the hologram; wherein the processing unit is configured for extracting the at least one object characteristic from a section of the hologram without reconstructing an image representation of the object. Further, a device (200) for sorting an object (106), a method for identifying an object and a method for sorting objects is presented.
    Type: Application
    Filed: June 28, 2016
    Publication date: July 12, 2018
    Applicants: IMEC VZW, Universiteit Gent
    Inventors: Bendix Schneider, Peter Bienstman, Joni Dambre, Geert Vanmeerbeeck, Liesbet Lagae
  • Publication number: 20180188176
    Abstract: A sensor device for quantifying luminescent targets configured in an at least one dimensional pattern. The sensor device comprises a detector for obtaining an at least one dimensional pattern of measured signals, wherein the detector is adapted for detecting the luminescence of the luminescent targets, resulting in a measured pattern. The sensor device moreover comprises a processor configured to correlate the measured pattern with at least one reference pattern, so as to generate a measurement signal representative for the quantification of luminescent targets. The at least one reference pattern is a recorded pattern or an expected pattern. A recorded pattern is a pattern which is obtained by the detector before the measured pattern is obtained.
    Type: Application
    Filed: June 29, 2016
    Publication date: July 5, 2018
    Applicant: IMEC VZW
    Inventors: Peter Peumans, Liesbet Lagae, Willem Van Roy, Tim Stakenborg, Pol Van Dorpe