Patents by Inventor Akli Karar

Akli Karar 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: 9366694
    Abstract: A multimode local probe microscope having a resonator, a first electrode, and a second electrode, an excitation source adapted to generate mechanical resonance in the resonator, a metal tip fastened to the resonator, movement mechanism for imparting relative movement between the local probe and a sample and adapted to bring the end of the tip to within a distance Z lying in the range 0 to 100 nm, and detector for detecting at least one electrical signal representative of friction forces at the terminals of said electrodes. The metal tip is electrically connected to the output second electrode and the microscopy apparatus includes amplifier and filter for amplifying and filtering signals relating to the friction forces and to the tunnelling current in a single electronic circuit, and configured for regulating the distance Z between the end of the tip and the surface of the sample.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: June 14, 2016
    Assignees: Ecole Polytechnique, Centre National de la Recherche Scientifique
    Inventors: Marc Chaigneau, Akli Karar, Bernard Drevillon, Razvigor Ossikovski
  • Publication number: 20160003866
    Abstract: The present invention relates to a multimode local probe microscope having a resonator (1), a first electrode (9), and a second electrode (8), an excitation source adapted to generate mechanical resonance in the resonator, a metal tip (4) fastened to the resonator, movement means for imparting relative movement between the local probe and a sample and adapted to bring the end of the tip to within a distance Z lying in the range 0 to 100 nm, and detector means for detecting at least one electrical signal representative of friction forces at the terminals of said electrodes (8, 9). According to the invention, said metal tip (4) is electrically connected to said output second electrode (9) and the microscopy apparatus includes amplifier and filter means for amplifying and filtering signals relating to the friction forces and to the tunnelling current in a single electronic circuit, and means for regulating the distance Z between the end of the tip and the surface of the sample.
    Type: Application
    Filed: January 13, 2014
    Publication date: January 7, 2016
    Inventors: Marc Chaigneau, Akli Karar, Bernard Drevillon, Razvigor Ossikovski
  • Patent number: 8026489
    Abstract: The invention concerns a device for analyzing a particle beam comprising at least one detector including a fiber-optic network, the network of parallel fibers comprising at least one first plane of parallel optical fibers oriented along a first direction X; the detector is designed to produce a light signal when the particle beam passes through the fiber-optic network, an image sensor coupled with the detector so as to output a signal representing characteristics of the light signal. The invention is characterized in that the image sensor comprises a CCD or CMOS sensor, wherein the ends of the fibers of the fiber-optic network are designed to form an image of the light signal in the plane of the CCD or CMOS sensor.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: September 27, 2011
    Assignee: Centre National de la Recherche Scientifique—CNRS
    Inventors: Maurice Haguenauer, Alain Busata, Akli Karar
  • Publication number: 20100065747
    Abstract: The invention concerns a device for analyzing a particle beam comprising at least one detector including a fiber-optic network, the network of parallel fibers comprising at least one first plane of parallel optical fibers oriented along a first direction X; the detector is designed to produce a light signal when the particle beam passes through the fiber-optic network, an image sensor coupled with the detector so as to output a signal representing characteristics of the light signal. The invention is characterized in that the image sensor comprises a CCD or CMOS sensor, wherein the ends of the fibers of the fiber-optic network are designed to form an image of the light signal in the plane of the CCD or CMOS sensor.
    Type: Application
    Filed: February 13, 2007
    Publication date: March 18, 2010
    Inventors: Maurice Haguenauer, Alain Busata, Akli Karar