Extrinsic Chirality by Interference between Two Plasmonic Modes on an Achiral Rectangular Nanostructure

Oshikiri, Tomoya; Sun, Quan; Yamada, Hiroki; Zu, Shuai; Sasaki, Keiji; Misawa, Hiroaki

Extrinsic Chirality by Interference between Two Plasmonic Modes on an Achiral Rectangular Nanostructure

Oshikiri, Tomoya; Sun, Quan; Yamada, Hiroki et al.

ACS nano, 2021, 15(10), 16802-16810

Permalink : https://hdl.handle.net/2115/83432

このアイテムのアクセス数:440件（2026-08-12 11:45 集計）

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
https://doi.org/10.1021/acsnano.1c07137			41

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権	open access
URI	https://hdl.handle.net/2115/83432
タイトル	Extrinsic Chirality by Interference between Two Plasmonic Modes on an Achiral Rectangular Nanostructure
著者	Oshikiri, Tomoya ; Sun, Quan ; Yamada, Hiroki ; Zu, Shuai ; Sasaki, Keiji ; Misawa, Hiroaki
e-Rad_Researcher 60704567 著者名 Oshikiri, Tomoya
e-Rad_Researcher 90727463 著者名 Sun, Quan
著者名 Yamada, Hiroki
著者名 Zu, Shuai
e-Rad_Researcher 00183822 著者名 Sasaki, Keiji
e-Rad_Researcher 30253230 著者名 Misawa, Hiroaki
言語	英語
キーワード	chirality
	localized surface plasmon resonance
	photoemission electron microscopy
	near-field imaging
	mode interference
発行日	2021-10-26
出版者	American Chemical Society
収録物名	ACS nano
巻(号)	15(10)
ページ	16802-16810
抄録	The optical near field (NF) induced by circularly polarized light (CPL) is a hot scientific topic. We observed a chiral NF intensity distribution on a series of achiral gold nanorectangular structures (Au-NRs) under CPL irradiation by using multiphoton photoemission electron microscopy (MP-PEEM). Additionally, the differential NF spectra under left and right CPL irradiation, which represent the asymmetry of the NF intensity distribution, were investigated. We propose an interpretation that the chiral NF intensity distribution on an achiral metallic nanostructure is extrinsically generated by the interference between two plasmonic modes by combining state-of-the-art MP-PEEM techniques and the classical oscillator model. Our interpretation well explains both the experimental and simulation results. Furthermore, the intensity of the NF and its phase angle of each mode under linearly polarized light irradiation were revealed to be critical factors for the generation of extrinsic chirality in the NF intensity distribution.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	1936-0851
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1021/acsnano.1c07137