کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1543287 997491 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Frequency separation of surface acoustic waves in layered structures with acoustic metamaterials
ترجمه فارسی عنوان
جداسازی فرکانس امواج صوتی سطح در سازه های لایه ای با متامومات های صوتی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی


• Mathematical model of Love wave propagation in inhomogeneous waveguide is developed.
• Love wave in inhomogeneous waveguide can be spatially separated.
• Parameters of elastic metamaterial reveal resonant properties.
• Elastic metamaterial can be used to enhance spatial separation of SAW.

We show theoretically that in elastic layered structures containing an upper layer of smoothly varied thickness and a substrate of a highly dispersive metametarial it is possible to significantly enhance spatial frequency separation of surface acoustic waves. Theory of Love surface acoustic waves propagation in waveguides with varied thickness, taking into account mutual modes coupling, is built. Appropriate structure of metamatererial with resonant frequency dependence of material parameters, making frequency separation effective, is provided. Efficiency of spatial frequency separation and modes coupling is calculated for various metamaterial parameters and wave frequencies.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Photonics and Nanostructures - Fundamentals and Applications - Volume 12, Issue 3, June 2014, Pages 239–251
نویسندگان
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