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

共 45 条

[1]

[Anonymous], COMSOL Multiphysics

[2]

[Anonymous], PYTH V3 7 6

[3] The acoustic phase resonances and surface waves supported by a compound rigid grating [J].

Beadle, Joseph G. ;

Starkey, Timothy ;

Dockrey, Joseph A. ;

Sambles, J. Roy ;

Hibbins, Alastair P. .

SCIENTIFIC REPORTS, 2018, 8

[4] Ultrathin entirely flat Umklapp lenses [J].

Chaplain, Gregory J. ;

Craster, Richard, V .

PHYSICAL REVIEW B, 2020, 101 (15)

[5] Collimation of sound assisted by acoustic surface waves [J].

Christensen, J. ;

Fernandez-Dominguez, A. I. ;

De Leon-Perez, F. ;

Martin-Moreno, L. ;

Garcia-Vidal, F. J. .

NATURE PHYSICS, 2007, 3 (12) :851-852

[6] Rayleigh-Bloch waves along elastic diffraction gratings [J].

Colquitt, D. J. ;

Craster, R. V. ;

Antonakakis, T. ;

Guenneau, S. .

PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2015, 471 (2173)

[7] Spoof-Fluid-Spoof Acoustic Waveguide and its Applications for Sound Manipulation [J].

Cselyuszka, Norbert ;

Alu, Andrea ;

Jankovic, Nikolina .

PHYSICAL REVIEW APPLIED, 2019, 12 (05)

[8] Design Guidelines for Gap Waveguide Technology Based on Glide-Symmetric Holey Structures [J].

Ebrahimpouri, Mahsa ;

Quevedo-Teruel, Oscar ;

Rajo-Iglesias, Eva .

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2017, 27 (06) :542-544

[9]

Fischer B., 2021, URSI GASS 2021, V1

[10] Acoustic metamaterials [J].

Haberman, Michael R. ;

Guild, Matthew D. .

PHYSICS TODAY, 2016, 69 (06) :42-48

← 1 2 3 4 5 →