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Selected Works of Andres H. La Rosa
Article
Whispering Gallery Mode Ultrasonically Coupled Scanning Probe Microscopy
US Patent No 8,037,762 B2 (2011)
  • Andres H. La Rosa, Portland State University
  • Richard Nordstrom
  • Sudhaprasanna Kumar Padigi
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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.
Disciplines
Publication Date
October, 2011
Citation Information
Andres H. La Rosa, Richard Nordstrom and Sudhaprasanna Kumar Padigi. "Whispering Gallery Mode Ultrasonically Coupled Scanning Probe Microscopy" US Patent No 8,037,762 B2 (2011)
Available at: http://works.bepress.com/la_rosa/9/