Confined acoustic line modes within a glide-symmetric waveguide

被引：2

作者：

Moore, Daniel B. ^{[1
]}

Ward, Gareth P. ^{[1
]}

Smith, John D. ^{[2
]}

Hibbins, Alastair P. ^{[1
]}

Sambles, J. Roy ^{[1
]}

Starkey, Timothy A. ^{[1
]}

机构：

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

[2] DSTL, Salisbury SP4 0JQ, Wilts, England

来源：

SCIENTIFIC REPORTS | 2022年 / 12卷 / 01期

关键词：

PROPAGATION;

D O I：

10.1038/s41598-022-13782-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Confined coupled acoustic line-modes supported by two parallel lines of periodic holes on opposite surfaces of a glide-symmetric waveguide have a hybrid character combining symmetric and anti-symmetric properties. These hybrid coupled acoustic line-modes have a near constant group velocity over a broad frequency range as no band gap is formed at the first Brillouin zone boundary. We show that the hybrid character of these confined modes is tuneable as a function of the spacing between the two surfaces. Further we explore how the band-gap reappears as the glide symmetry is broken.

引用

页数：9

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