Title :
Acoustic microscopy in gases
Author :
Petts, C.R. ; Wickramasinghe, H.K.
Author_Institution :
University College London, Department of Electronic & Electrical Engineering, London, UK
Abstract :
A novel coupling medium for acoustic microscopy is proposed, viz gas under elevated pressures. Using a frequency of 45 MHz in argon at 30 atmospheres, a resolution close to the theoretical limit has been reached. We predict that it should be possible, working at less than 400 atmospheres and at higher frequencies, to achieve a resolution better than 1000 Ã….
Keywords :
acoustic imaging; acoustic microscopes; argon; high-pressure techniques; Ar pressure 30 atmospheres; acoustic microscopy; frequency 45 MHz; high pressure Ar coupling medium; high pressure gases; resolution;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19800008
