Patents by Inventor Mathias VANWOLLEGHEM

Mathias VANWOLLEGHEM 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).

  • Photoacoustic transducer
    Patent number: 11761884
    Abstract: An integrated photoacoustic transducer, sensing system and method for assisting in sensing a concentration of a species in a fluid such that the integrated photoacoustic transducer includes a waveguide structure. The waveguide structure has an optical resonance spectrally overlapping a spectral absorption line or band of the species. The photoacoustic transducer includes at least one acoustic cavity formed in a portion of the waveguide structure and configured for receiving the fluid for sensing comprising the species. The at least one acoustic cavity has an acoustic resonance spectrally overlapping with a harmonic of a modulation frequency. At least one acoustic transducer comprising a deformable mechanical portion is included in the photoacoustic transducer.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: September 19, 2023
    Assignees: VMICRO SAS, UNIVERSITEIT GENT, CNRS
    Inventors: Bart Kuyken, Mathias Vanwolleghem, Mattias Verstuyft, Benjamin Walter, Jean-Francois Lampin
  • PHOTOACOUSTIC TRANSDUCER
    Publication number: 20220276149
    Abstract: An integrated photoacoustic transducer, sensing system and method for assisting in sensing a concentration of a species in a fluid such that the integrated photoacoustic transducer includes a waveguide structure. The waveguide structure has an optical resonance spectrally overlapping a spectral absorption line or band of the species. The photoacoustic transducer includes at least one acoustic cavity formed in a portion of the waveguide structure and configured for receiving the fluid for sensing comprising the species. The at least one acoustic cavity has an acoustic resonance spectrally overlapping with a harmonic of a modulation frequency. At least one acoustic transducer comprising a deformable mechanical portion is included in the photoacoustic transducer.
    Type: Application
    Filed: January 27, 2020
    Publication date: September 1, 2022
    Inventors: Bart KUYKEN, Mathias VANWOLLEGHEM, Mattias VERSTUYFT, Benjamin WALTER, Jean-Francois LAMPIN