Title :
Fast acoustic modes guided by multilayered solid structures
Author :
Darinskii, A.N. ; Weihnacht, M.
Author_Institution :
Inst. of Crystallogr., Acad. of Sci., Moscow, Russia
Abstract :
Layered waveguides are shown to support the propagation of non-radiating acoustic modes with the velocity exceeding that of both the quasitransverse bulk waves in the external solid medium, where the waveguide is immersed. An analytical criterion has been derived for the existence of these fast waves in a three-layered waveguide. Numerical computations have been performed for a number of structures. According to our computations, monolayered waveguides can also support the propagation of fast modes under particular conditions
Keywords :
acoustic waveguides; guided nonradiating acoustic mode propagation; multilayered waveguide; solid structure; Acoustic propagation; Acoustic waveguides; Acoustic waves; Boundary conditions; Crystallography; Geophysics computing; Solid state circuits; Surface waves; Transmission line matrix methods; Waveguide components;
Conference_Titel :
Ultrasonics Symposium, 2000 IEEE
Conference_Location :
San Juan
Print_ISBN :
0-7803-6365-5
DOI :
10.1109/ULTSYM.2000.922538
