Lens geometries for quantitative acoustic microscopy
Author
Atalar, Abdullah
Köymen, Hayrettin
Bozkurt, Ayhan
Yaralıoğlu, Göksenin
Editor
Briggs, A.
Arnold, W.
Date
1995Publisher
Springer
Volume
1
Pages
117 - 151
Language
English
Type
Book ChapterItem Usage Stats
150
views
views
112
downloads
downloads
Book Title
Advances in acoustic microscopy
Series
Advances in acoustic microscopy;
Abstract
The purpose of the first Lemons-Quate acoustic microscope(1) was to image the surfaces of materials or biological cells with a high resolution. Unfortunately, competition with the optical microscope was only partially successful due to the high degree of absorption in the liquid-coupling medium at high frequencies. Increasing the resolution beyond optical limits was possible with the use of hot water(2) or cryogenic liquids,(3) at the cost of operational difficulty and system complexity. Meanwhile it was shown that the acoustic microscope can generate information that has no counterpart in the optical world.(4) The presence of leaky waves resulted in an interference mechanism known as V(z) curves. The V(z) method involves recording the reflected signal amplitude from an acoustic lens as a function of distance between the lens and the object. This recorded signal is shown to depend on elastic parameters of the object material. After underlying processes are well understood, new lens geometries or signal-processing electronics are designed to emphasize the advantage of the acoustic lens. In any case, the aim has been to increase the quantitative characterization ability of the microscope.
Permalink
http://hdl.handle.net/11693/51241Published Version (Please cite this version)
https://doi.org/10.1007/978-1-4615-1873-0_4https://doi.org/10.1007/978-1-4615-5851-4