Frequency separation of surface acoustic waves in layered structures with acoustic metamaterials

被引：5

作者：

Kalyabin, D. ^{[1
,2
]}

Lisenkov, I. ^{[1
,2
,3
]}

Lee, Y. P. ^{[4
,5
]}

Nikitov, S. ^{[1
,2
,6
]}

机构：

[1] RAS, Kotelnikov Inst Radioengn & Elect, Moscow 125009, Russia

[2] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia

[3] Oakland Univ, Dept Phys, Rochester, MI 48309 USA

[4] Hanyang Univ, Quantum Photon Sci Res Ctr, Dept Phys, Seoul 133791, South Korea

[5] Hanyang Univ, RINS, Seoul 133791, South Korea

[6] Saratov NG Chernyshevskii State Univ, Saratov 410012, Russia

来源：

PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS | 2014年 / 12卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

Surface acoustic waves; Elastic metamaterials; Splitter; Spatial dispersion; WAVEGUIDES; ACCURACY; CLOAKING; INDEX; MODES;

D O I：

10.1016/j.photonics.2014.02.004

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：239 / 251

页数：13

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