Acoustic helical dichroism in chiral structures

Qing Tong; Shubo Wang

Acoustic helical dichroism in chiral structures

Qing Tong
, Shubo Wang^*

^*Corresponding author for this work

Department of Physics

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

We demonstrate acoustic helical dichroism, i.e., differential absorption of acoustic vortices carrying opposite orbital angular momentum (OAM), in a one-dimensional lattice formed of chiral resonators. The phenomenon originates from the OAM band gaps and non-Hermitian exceptional points under the breaking of C₄ rotational symmetry of the resonators. The results can find applications in manipulations of acoustic orbital angular momentum. © 2023, META Conference. All rights reserved.

Original language	English
Title of host publication	META 2022 Torremolinos - Spain: The 12^th International Conference on Metamaterials, Photonic Crystals and Plasmonics
Editors	Said Zouhdi
Pages	795-796
Publication status	Published - Jul 2022
Event	12th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META 2022) - Palacio de Congresos y Exposiciones de la Costa del Sol (Torremolinos Congress Center), Torremolinos, Spain Duration: 19 Jul 2022 → 22 Jul 2022 https://metaconferences.org/META/index.php/META2022/ https://metaconferences.org/META/files/meta22_proceedings.pdf

Publication series

Name	International Conference on Metamaterials, Photonic Crystals and Plasmonics
ISSN (Print)	2429-1390

Conference

Conference	12th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META 2022)
Abbreviated title	META 2022
Place	Spain
City	Torremolinos
Period	19/07/22 → 22/07/22
Internet address	https://metaconferences.org/META/index.php/META2022/ https://metaconferences.org/META/files/meta22_proceedings.pdf

Bibliographical note

Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).

Funding

This work was supported by grants from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. CityU 21302018) and City University of Hong Kong (Project No. 9610388).

RGC Funding Information

RGC-funded

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https://metaconferences.org/META/index.php/META2022/proceeding

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Check CityUHK Library

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Cite this

Tong, Q., & Wang, S. (2022). Acoustic helical dichroism in chiral structures. In S. Zouhdi (Ed.), META 2022 Torremolinos - Spain: The 12^th International Conference on Metamaterials, Photonic Crystals and Plasmonics (pp. 795-796). (International Conference on Metamaterials, Photonic Crystals and Plasmonics). https://metaconferences.org/META/index.php/META2022/proceeding

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abstract = "We demonstrate acoustic helical dichroism, i.e., differential absorption of acoustic vortices carrying opposite orbital angular momentum (OAM), in a one-dimensional lattice formed of chiral resonators. The phenomenon originates from the OAM band gaps and non-Hermitian exceptional points under the breaking of C4 rotational symmetry of the resonators. The results can find applications in manipulations of acoustic orbital angular momentum. {\textcopyright} 2023, META Conference. All rights reserved.",

author = "Qing Tong and Shubo Wang",

note = "Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).; 12th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META 2022), META 2022 ; Conference date: 19-07-2022 Through 22-07-2022",

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Tong, Q & Wang, S 2022, Acoustic helical dichroism in chiral structures. in S Zouhdi (ed.), META 2022 Torremolinos - Spain: The 12^th International Conference on Metamaterials, Photonic Crystals and Plasmonics. International Conference on Metamaterials, Photonic Crystals and Plasmonics, pp. 795-796, 12th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META 2022), Torremolinos, Spain, 19/07/22. <https://metaconferences.org/META/index.php/META2022/proceeding>

Acoustic helical dichroism in chiral structures. / Tong, Qing ; Wang, Shubo.
META 2022 Torremolinos - Spain: The 12^th International Conference on Metamaterials, Photonic Crystals and Plasmonics. ed. / Said Zouhdi. 2022. p. 795-796 (International Conference on Metamaterials, Photonic Crystals and Plasmonics).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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N2 - We demonstrate acoustic helical dichroism, i.e., differential absorption of acoustic vortices carrying opposite orbital angular momentum (OAM), in a one-dimensional lattice formed of chiral resonators. The phenomenon originates from the OAM band gaps and non-Hermitian exceptional points under the breaking of C4 rotational symmetry of the resonators. The results can find applications in manipulations of acoustic orbital angular momentum. © 2023, META Conference. All rights reserved.

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ER -

Acoustic helical dichroism in chiral structures

Abstract

Publication series

Conference

Bibliographical note

Funding

RGC Funding Information

Access Output

Other Access Options

Permanent Link

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Fingerprint

ECS: Manipulating Classical Wave Vortex States Using Artificial Structures

Cite this

Acoustic helical dichroism in chiral structures

Abstract

Publication series

Conference

Bibliographical note

Funding

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

ECS: Manipulating Classical Wave Vortex States Using Artificial Structures

Cite this