بررسی کوپلینگ پیزوالکتریکی و آنیزتروپی بر انتشار امواج صوتی در بلوره صوتی لیتیوم نیوباته
نویسنده
دانشکده فنی، دانشگاه تهران
چکیده
کلیدواژهها
عنوان مقاله [English]
Investigation of Piezoelectric Coupling and Anisotropy Effect on Acoustic Wave Propagation at LithiumNiobate Crystalloacoustic
نویسنده [English]
- sh Rezaei
The acoustic wave velocity depends on elasticity and density at most materials, but because of anisotropy and especially piezoelectric coupling effect, the acoustic wave propagation at piezoelectric based crystalloacoustic materials, is an applied and challenging problem. In this paper, using modified Christoffel's equation based on group velocity concept, the effect of anisotropy and piezoelectric coupling at different wafers of lithium niobate crystalloacoustic (strong anisotropy) on acoustic wave velocity (semi-longitudinal, semi-vertical transverse wave and semi-horizontal transverse wave) is investigated, and validated by experimental data. Then, the acoustic wave velocity ranges that can be supported are determined. The result of this study can be essential at acoustic metamaterials design, Phononic crystal and piezoelectric based wave-guides.
کلیدواژهها [English]
- Crystalloacoustic
- Lithium niobate
- Acoustic wave propagation
- Piezoelectric coupling
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