A mass-loaded topological switching mechanism for phononic biosensors

Okita, Hiroki; Wiltshaw, Richard; Gautam, Ambuj Kumar; Wright, Oliver B.; Ogi, Hirotsugu

doi:https://doi.org/10.35848/1347-4065/ae3772

A mass-loaded topological switching mechanism for phononic biosensors

Okita, Hiroki; Wiltshaw, Richard; Gautam, Ambuj Kumar et al.

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 2026, 65(3), 03SP30

アクセス数:196件（2026-10-30 12:00 集計）

固定URL: https://hdl.handle.net/11094/106036

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タイトル	A mass-loaded topological switching mechanism for phononic biosensors
著者	著者名 Okita, Hiroki
	著者名 Wiltshaw, Richard
	著者名 Gautam, Ambuj Kumar
	NRID 1000090281790 1000090281790 ORCID 0000-0003-3035-0901 0000-0003-3035-0901 researchmap permalink read0052157 read0052157 著者名 Wright, Oliver B.
	NRID 1000090252626 1000090252626 ORCID 0000-0002-9602-5194 0000-0002-9602-5194 researchmap permalink read0042771 read0042771 Scopus Author ID 35563683500 35563683500 著者名 Ogi, Hirotsugu
キーワード等	bioesnsor
	mass loading
	path switching
	phononic crystal
	topological mode
内容	This is the Accepted Manuscript version of an article accepted for publication in Japanese Journal of Applied Physics, Part 1. IOP Publishing Ltd are not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.35848/1347-4065/ae3772.
抄録	We propose a switchable topological phononic biosensor that exploits interface modes protected by band topology. The device is based on a hexagonal unit cell consisting of six tungsten pillars embedded in an acrylic resin matrix, arranged with an equilateral-triangle-based motif that, when unrotated, enforces threefold symmetry. Two topologically distinct domains are formed by slightly rotating this internal triangular structure, creating robust zero-line modes localized at their interface. Finite-element simulations show that surface mass loading shifts the interface-mode dispersion and switches the propagation path at a fixed excitation frequency, providing a new biosensing mechanism based on topological mode switching.
出版者	Institute of Physics
収録物名	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
巻(号)	65(3)
ページ	03SP30
刊行年月	2026-02-16
言語	英語
ハンドルURL	https://hdl.handle.net/11094/106036
PISSN	00214922
eISSN	13474065
関連情報 (isVersionOf)	DOI (出版社版) https://doi.org/10.35848/1347-4065/ae3772
アクセス権	embargoed access
権利情報	This Accepted Manuscript is available for reuse under a CC BY-NC-ND licence after the 12 month embargo period provided that all the terms of the licence are adhered to.
権利情報	The full-text file will be made open to the public on 16 February 2027 in accordance with the publisher's policy.
出版タイプ	Accepted Manuscript
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2026, 65(3), p. 03SP30
DC.title	A mass-loaded topological switching mechanism for phononic biosensors
DC.creator	Okita, Hiroki
	Wiltshaw, Richard
	Gautam, Ambuj Kumar
	Wright, Oliver B.
	Ogi, Hirotsugu
DC.publisher	Institute of Physics
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2026-02-16
DC.identifier	https://doi.org/10.35848/1347-4065/ae3772
DC.subject	bioesnsor
	mass loading
	path switching
	phononic crystal
	topological mode
DC.description	This is the Accepted Manuscript version of an article accepted for publication in Japanese Journal of Applied Physics, Part 1. IOP Publishing Ltd are not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.35848/1347-4065/ae3772.
DCTERMS.abstract	We propose a switchable topological phononic biosensor that exploits interface modes protected by band topology. The device is based on a hexagonal unit cell consisting of six tungsten pillars embedded in an acrylic resin matrix, arranged with an equilateral-triangle-based motif that, when unrotated, enforces threefold symmetry. Two topologically distinct domains are formed by slightly rotating this internal triangular structure, creating robust zero-line modes localized at their interface. Finite-element simulations show that surface mass loading shifts the interface-mode dispersion and switches the propagation path at a fixed excitation frequency, providing a new biosensing mechanism based on topological mode switching.
DC.rights	This Accepted Manuscript is available for reuse under a CC BY-NC-ND licence after the 12 month embargo period provided that all the terms of the licence are adhered to.
DC.rights	The full-text file will be made open to the public on 16 February 2027 in accordance with the publisher's policy.
DC.format	106036
citation_title	A mass-loaded topological switching mechanism for phononic biosensors
citation_author	Okita, Hiroki
	Wiltshaw, Richard
	Gautam, Ambuj Kumar
	Wright, Oliver B.
	Ogi, Hirotsugu
citation_publisher	Institute of Physics
citation_language	英語
citation_date	2026-02-16
citation_journal_title	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
citation_volume	65
citation_issue	3
citation_firstpage	03SP30
citation_doi	https://doi.org/10.35848/1347-4065/ae3772
citation_public_url	https://hdl.handle.net/11094/106036

A mass-loaded topological switching mechanism for phononic biosensors

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