Patents by Inventor Gajendra S. Shekhawat

Gajendra S. Shekhawat 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).

  • Scanning near field thermoelastic acoustic holography (SNFTAH)
    Patent number: 8438927
    Abstract: A system and method for analyzing a sample is described. The system may include, for example, a light source and a scanning probe microscope probe. The light source may generate a coherent laser beam that is modulated by a waveform of a lower frequency. The modulated laser beam is absorbed by the sample causing thermally induced expansion and resulting in an excitation of acoustic waves. The probe is locally deployed near the sample and detects, in real time, perturbations in the excited acoustic waves to detect surface and buried structures of the sample.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: May 14, 2013
    Assignee: Northwestern University
    Inventors: Gajendra S. Shekhawat, Vinayak P. Dravid
  • Scanning Near Field Thermoelastic Acoustic Holography (SNFTAH)
    Publication number: 20110036170
    Abstract: A system and method for analyzing a sample is described. The system may include, for example, a light source and a scanning probe microscope probe. The light source may generate a coherent laser beam that is modulated by a waveform of a lower frequency. The modulated laser beam is absorbed by the sample causing thermally induced expansion and resulting in an excitation of acoustic waves. The probe is locally deployed near the sample and detects, in real time, perturbations in the excited acoustic waves to detect surface and buried structures of the sample.
    Type: Application
    Filed: October 1, 2010
    Publication date: February 17, 2011
    Applicant: NORTHWESTERN UNIVERSITY
    Inventors: Gajendra S. Shekhawat, Vinayak P. Dravid