Open AccessMETHOD OF EXCITATION OF QUASI LONGITUDINAL ACOUSTIC WAVES IN LAYERED STRUCTURES
Author(s) -
Ya. М. Olikh,
O. E. Belyaev,
Ya. I. Lepikh
Publication year - 2021
Publication title -
sensorna elektronìka ì mìkrosistemnì tehnologìï
Language(s) - English
Resource type - Journals
eISSN - 2415-3508
pISSN - 1815-7459
DOI - 10.18524/1815-7459.2021.4.248176
Subject(s) - longitudinal wave , displacement (psychology) , excitation , acoustics , acoustic wave , transducer , plane (geometry) , plane wave , optics , physics , physical acoustics , range (aeronautics) , materials science , wave propagation , geometry , mathematics , quantum mechanics , composite material , psychotherapist , psychology
The analysis of methodological possibilities of excitation of quasi-longitudinal (QL) acoustic waves of the megahertz frequency range in layered structures GaN-on-sapphire is studied and carried out. Volume-type transducers polarized by plate thickness are used to generate and detect QL waves. It is concluded that quasilongitudinal modes (QL) can be excited by this method – the so-called Anisimkin (AN) waves, for which the displacement plane is localized in the film plane and the displacement direction is directed along the wave vector.