Ultrasonic Visualization of Layered Objects
Yu. S. Petronyuk, С. А. Титов, Alexey N. Bogachenkov, В. М. Левин, Inna G. Grigorieva · Bulletin of the Russian Academy of Sciences Physics · 2023
Abstract Pulsed acoustic microscopy (100–200 MHz) is used to study layers of pyrolytic graphite with a thickness of 40 μm on a glass substrate comparable to the wavelength of the probing sound. The mechanism of the natural enhancement of acoustic contrast while visualizing this type of structures is analyzed. The interpretation of images of the inhomogeneous structure of the layer-substrate contact is supported by a quantitative assessment of acoustic impedances.