Material anisotropy unveiled by random scattering of surface acoustic waves

Abstract

Articles you may be interested inScattering and attenuation of surface acoustic waves and surface skimming longitudinal polarized bulk waves imaged by Coulomb coupling AIP Conf.

Optical Characterization of Phononic Crystals in the Frequency Domain

“…Furthermore, the "filled" interior of the contour implies that the structure also scatters SAWs into BAWs in a relatively uniform way. For further information, see [19].…”

“…As an example, consider SAW propagation in an anisotropic medium [19]. This example illustrates the possibilities of deriving quantities from high-quality interferometer data.…”

Stochastic band structure for waves propagating in periodic media or along waveguides

“…Radiation modes exist in the region of the dispersion diagram called the sound cone. By definition, the boundary of the sound cone is obtained by looking for the slowest bulk wave propagating in a given direction and along the surface of the substrate, with the direction of wave propagation being measured by the Poynting vector [25]. This procedure leads in general to an anisotropic but non dispersive velocity surface v sc (k/|k|) whose projection on the band structure looks like a cone.…”