Patents by Inventor Alexander Movchan

Alexander Movchan 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).

  • Structure that can channel an elastic wave propagating in a plate
    Patent number: 9140326
    Abstract: A structure for bending transversal elastic waves around a zone to isolate of a plate, has an anisotropic Young's modulus and/or a heterogeneous mass density. The wavelengths of the elastic waves to bend are large with respect to the thickness of the plate and small with respect to the other dimensions of the plate. The structure is made by defining a meshing of a peripheral zone surrounding the zone to isolate; dividing the peripheral zone into several elementary rings and several elementary angular sectors; and forming, in each mesh delimited by an elementary angular sector and an elementary ring, a structural element in a material having a Young's modulus and/or a mass density different than those of the material forming the plate, the dimensions of the meshes and of the structural elements in the plane of the plate being less than half the wavelengths of the elastic waves to bend.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: September 22, 2015
    Assignees: Centre National de la Recherche Scientifique, Université Paul Cézanne Aix-Marseille III, University of Liverpool
    Inventors: Stéphane Enoch, Mohamed Farhat, Sébastien Guenneau, Alexander Movchan
  • STRUCTURE THAT CAN CHANNEL AN ELASTIC WAVE PROPAGATING IN A PLATE
    Publication number: 20130241123
    Abstract: A structure for bending transversal elastic waves around a zone to isolate of a plate, has an anisotropic Young's modulus and/or a heterogeneous mass density. The wavelengths of the elastic waves to bend are large with respect to the thickness of the plate and small with respect to the other dimensions of the plate. The structure is made by defining a meshing of a peripheral zone surrounding the zone to isolate; dividing the peripheral zone into several elementary rings and several elementary angular sectors; and forming, in each mesh delimited by an elementary angular sector and an elementary ring, a structural element in a material having a Young's modulus and/or a mass density different than those of the material forming the plate, the dimensions of the meshes and of the structural elements in the plane of the plate being less than half the wavelengths of the elastic waves to bend.
    Type: Application
    Filed: September 13, 2011
    Publication date: September 19, 2013
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITY OF LIVERPOOL, UNIVERSITÉ PAUL CÉZANNE AIX-MARSEILLE III
    Inventors: Stéphane Enoch, Mohamed Farhat, Sébastien Guenneau, Alexander Movchan