Determination of sound velocity and acoustic impedance of thin chitosan films by phase-sensitive acoustic microscopy

Albert E. Kamanyi; Esam T. Ahmed Mohamed; Wilfred Ngwa; Wolfgang Grill

doi:10.1117/12.847745

8 April 2010 Determination of sound velocity and acoustic impedance of thin chitosan films by phase-sensitive acoustic microscopy

Albert E. Kamanyi, Esam T. Ahmed Mohamed, Wilfred Ngwa, Wolfgang Grill

Author Affiliations +

Proceedings Volume 7650, Health Monitoring of Structural and Biological Systems 2010; 76502A (2010) https://doi.org/10.1117/12.847745
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

The biomaterial chitosan is used in the paper manufacturing industry, as a wound healing agent and in filtration amongst others. In this paper the longitudinal sound velocity and acoustic impedance of thin films of chitosan of varying thicknesses are determined by vector-contrast acoustic microscopy. The exploitation of the relative reflectivity information from the maximum amplitude images and a comparison of the experimentally obtained V(z) curves with simulations using appropriate models are applied for the evaluation of the sound velocity. These results were compared to those previously obtained results with the same instrument.

Citation Download Citation

Albert E. Kamanyi, Esam T. Ahmed Mohamed, Wilfred Ngwa, and Wolfgang Grill "Determination of sound velocity and acoustic impedance of thin chitosan films by phase-sensitive acoustic microscopy", Proc. SPIE 7650, Health Monitoring of Structural and Biological Systems 2010, 76502A (8 April 2010); https://doi.org/10.1117/12.847745

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