Patents by Inventor Sudhaprasanna Kumar Padigi

Sudhaprasanna Kumar Padigi 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).

  • Whispering gallery mode ultrasonically coupled scanning probe microscopy
    Patent number: 8037762
    Abstract: Scanning probe microscopes include a probe tip coupled to a tuning fork or other acoustic resonator so as to apply a shear force when contacted to a specimen surface based on an applied acoustic signal. A secondary ultrasonic transducer is in acoustic communication with the specimen and a resonant structure. Probe tip-specimen displacement can be detected based on whispering gallery mode ultrasonic waves in the resonant structure using the secondary transducer, and such displacements maintained using feedback control based on whispering gallery mode acoustic wave magnitude.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: October 18, 2011
    Assignee: State of Oregon Acting by and through The State Board of Higher Education on Behalf of Portland State University
    Inventors: Andres H. La Rosa Flores, Richard Nordstrom, Sudhaprasanna Kumar Padigi
  • WHISPERING GALLERY MODE ULTRASONICALLY COUPLED SCANNING PROBE MICROSCOPE
    Publication number: 20110138507
    Abstract: Scanning probe microscopes include a probe tip coupled to a tuning fork or other acoustic resonator so as to apply a shear force when contacted to a specimen surface based on an applied acoustic signal. A secondary ultrasonic transducer is in acoustic communication with the specimen and a resonant structure. Probe tip-specimen displacement can be detected based on whispering gallery mode ultrasonic waves in the resonant structure using the secondary transducer, and such displacements maintained using feedback control based on whispering gallery mode acoustic wave magnitude.
    Type: Application
    Filed: February 10, 2011
    Publication date: June 9, 2011
    Inventors: Andres H. La Rosa Flores, Richard Nordstrom, Sudhaprasanna Kumar Padigi