Broadband, slow sound on a glide-symmetric meander-channel surface

被引：14

作者：

Beadle, J. G. ^{[1
]}

Hooper, I. R. ^{[1
]}

Sambles, J. R. ^{[1
]}

Hibbins, A. P. ^{[1
]}

机构：

[1] Univ Exeter, Electromagnet & Acoust Mat Grp, Dept Phys & Astron, Phys Bldg,Stocker Rd, Exeter EX4 4QL, Devon, England

来源：

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2019年 / 145卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

WAVES; ATTENUATION;

D O I：

10.1121/1.5109549

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The acoustic surface waves supported by hard surfaces patterned with repeat-period, meandering grooves are explored. The single, continuous groove forms a glide-symmetric surface, inhibiting the formation of a bandgap at the first Brillouin-zone boundary. Consequently, the acoustic surface waves exhibit an almost constant, sub-speed-of-sound, group velocity over a broad frequency band. Such slow, broadband modes may have applications in controlling the flow of noise over surfaces. (C) 2019 Acoustical Society of America.

引用

收藏

页码：3190 / 3194

页数：5

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