Acoustic Microscopy at Cryogenic Temperatures

Abstract

The resolution of the acoustic microscope is greatly enhanced by using cryogenic liquids for the coupling medium. Liquid Argon, Nitrogen, and Superfluid Helium have all been used for acoustic microscopy during this program. Superfluid helium at temperatures less than 0.2 K emerges as the ultimate fluid for high resolution acoustic microscopy. Using coherent 300 A sound waves in helium, images with a resolution of 200A have been produced.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1984
Accession Number
ADA148755

Entities

People

  • Calvin Quate

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Impedance
  • Acoustic Propagation
  • Acoustic Properties
  • Acoustic Waves
  • Acoustics
  • Electrical Engineering
  • Energy
  • Field Effect Transistors
  • High Resolution
  • Integrated Circuits
  • Microscopy
  • Physics Laboratories
  • Shock Waves
  • Sound Waves
  • Transducers
  • Wave Mixing
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Combustion and Flow Dynamics.
  • Nanoscale Plasmonic Nanotechnology