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Principle and Applications of Practical Shear Wave Lens at Low frequencies for Scanning Acoustic Microscopy

Chiaki MIYASAKA, and Bernhard R. TITTMANN
Department of Engineering Science & Mechanics
The Pennsylvania State University
212 Earth and Engineering Science Building, University Park, PA 16802, USA
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Abstract

Introduction

Concept of Lens Design

Reduction of Superimposed Surface Information

Reduction of Spherical Aberration

Conclusion

Reference

  1. R. A. Lemons and C. F. Quate: "Acoustic microscope-scanning version", Appl. Phys. Lett., 24, pp. 163 - 165, (1974)
  2. B. T. Kuri-Yakub and C-H Chou: "Acoustic microscope lenses with shear wave transducers", IEEE 1986 Ultrasonic Symposium, pp.741 - 744, IEEE, New York, (1986)
  3. D. A. Davids and P. Y. We and D. Chizhik: "Restricted aperture acoustic microscope lens for Rayleigh wave imaging", Appl. Phys., Lett., 54(17), pp. 1639 - 1641, (1989)
  4. A. Atalar, H. Koymen, and L. Degertekin: "Characterization of layered materials by the Lamb wave lens," in Proc. of IEEE 1990 Ultrasonics Symposium, pp. 359 - 362, (1990)
  5. A. Atalar, I. Ishikawa, Y. Ogura and K. Tomita: "Anisotropy sensitivity of an acoustic lens with slit aperture," in Proc. of IEEE 1993 Ultrasonics Symposium, pp. 613 - 616, (1993)

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