Inhomogeneous Waves in Piezoelectric Crystals
Abstract:Inhomogeneous waves are described as pure homogeneous plane waves, except that the wave vector is complex valued. This results in an exponential decay of the amplitude along the wave front. The last 30 years, a lot of studies have been reported on the properties of inhomogeneous waves. It is, for example, known that their velocity depends on the inhomogeneity, in isotropic as well as in anisotropic media. Nevertheless, the influence of piezoelectricity, which is very important for a lot of crystals, has always been neglected in the reported studies. The present paper reports a study of the propagation of inhomogeneous waves in the bulk of piezoelectric crystals. Special attention is drawn on the susceptibility of inhomogeneous waves to the effect of piezoelectricity. Numerical examples are given for Lithium Niobate.
Document Type: Research Article
Publication date: September 1, 2005
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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