Direct measurement of surface acoustic wave velocities and accuracy enhancement by wavelet transform

• Autorzy: Kosbi K. , Scheer U. , Boseck S.
• Konferencja: International Symposium on HYDROACOUSTICS AND ULTRASONICS EAA Symposium (formerly 13th FASE Symposium) Gdańsk-Jurata, 12-16 May 1997
• Języki publikacji: EN

Abstrakty

EN

The aim of this work is to show that the wavelet transform as an image processing technique has the capability to improve quantitative measurements of surface acoustic wave (SAW) velocities. An outline of the basic properties of the wavelet transform and its advantages is given. We apply the wavelet transform to a recently developed measurement technique for the determination of SAW velocities. This technique is based on a modified scanning acoustic microscope (SAM) and can be thought as directly imaging SAWs that propagate on the surface of a solid. Results for the SAW velocity of silicon single crystals are presented.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 1997
• Tom: Vol. 1
• Strony: 195--198
• Opis fizyczny: Bibliogr. 5 poz., rys.

Twórcy

autor

Kosbi K.

• Institute of Materials Science and Structurc Research, Physics Department University of Bremen, Kufsteiner Str., D-28359 Bremen, Germany

autor

Scheer U.

• Institute of Materials Science and Structurc Research, Physics Department University of Bremen, Kufsteiner Str., D-28359 Bremen, Germany

autor

Boseck S.

• Institute of Materials Science and Structurc Research, Physics Department University of Bremen, Kufsteiner Str., D-28359 Bremen, Germany

Bibliografia

• [1] Briggs, A., 1992, Acoustic Microscopy, Cłarendon Press, Oxford.
• [2] Weglein, R.D., 1985, Acoustic micro - metrology, IEEE Trans. Sonics Ultrasonics SU32, 225-234.
• [3] Kosbi, K., Weise, W., Scheer, U., Laun, U., Boseck, S., 1995, Measurement of surface wave velocity and anisotropy at edges using pointfocus acoustic rnicroscopy. In: Tortoli, P. (ed.), Proc. XXII Internat. Symposium on Acoustical Imaging, Plenum Press, 677-682.
• [4] Gabor, D., 1946, Theory of communication, .J. lEE, Vol. 93, 429-455.
• [5] Daubechies, J., 1992, Ten Lectures on Wavelets, Academic Press, London.