Tunneling Acoustic Microscopy

Abstract

We have demonstrated the use of a near-field scanning acoustic microscope in a noncontact mode using electrostriction to generate acoustic waves from a subwavelength dimension spot. Noncontact images have been obtained using the electrostrictive acoustic signal as the sole feedback signal. 5 micrometer lateral resolution in this mode has been demonstrated using 11 micrometer acoustic wavelength. Due to the nonlinear force interaction between the tip and the sample, frequency doubling is observed in the electrostrictive mode. During imaging, the tip and sample are excited by an rf signal at 350 MHz and the image is composed of a signal at 700 MHz.

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Document Details

Document Type
Technical Report
Publication Date
Dec 31, 1993
Accession Number
ADA279160

Entities

People

  • B. T. Khuri-yakub
  • Calvin F. Quate

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Microscopes
  • Acoustic Propagation
  • Acoustic Properties
  • Acoustic Signals
  • Acoustic Waves
  • Acoustics
  • Ceramic Materials
  • Chemical Vapor Deposition
  • Detectors
  • Electromagnetic Fields
  • Frequency
  • Microscopes
  • Microscopy
  • Near Field
  • Sound Waves
  • Transducers
  • Two Dimensional

Fields of Study

  • Physics

Readers

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  • Materials Science and Engineering.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.