# Finite-Area Membrane Metasurfaces for Enhancing Light-Matter Coupling in Monolayer Transition Metal Dichalcogenides https://mdr.nims.go.jp/datasets/775878fa-4648-4485-b077-628559a168e6 ## File - [nn-2024-055605.R2_Proof_hi.pdf](https://mdr.nims.go.jp/filesets/aac0c077-d81f-4ef5-8796-ce0326c46ad7/download) ([Detail](https://mdr.nims.go.jp/filesets/aac0c077-d81f-4ef5-8796-ce0326c46ad7.md)) ## Id 775878fa-4648-4485-b077-628559a168e6 ## Local identifier ## Visibility open_to_public ## State published ## Created at 2024-09-17T11:43:54.362996Z ## Updated at 2025-08-20T23:30:32.824590Z ## Published at 2025-08-20T23:19:12.421388Z ## Doi https://doi.org/10.48505/nims.4763 ## First published url https://doi.org/10.1021/acsnano.4c05560 ## Date published 2024-09-03 ## Recorded date published 2024-9-3 ## Resource type journal_article ## Manuscript type accepted_manuscript ## Collection ## Title - title: Finite-Area Membrane Metasurfaces for Enhancing Light-Matter Coupling in Monolayer Transition Metal Dichalcogenides title_type: original lang: en ## Description - description: Transition metal dichalcogenides (TMDCs) are at the forefront of nanophotonics because of their exceptional optical characteristics. The 2D architecture of TMDCsfacilitates efficient light absorption and emission, holding tantalizing potential for next-generation nanophotonic and quantum devices. Yet, the atomic thinness limits their interaction volume with light, affecting light-matter interaction and quantum efficiency. The light coupling in the 2D layeredTMDCs can be enhanced by integration with photonic structure, and the metasurfaces supporting bound states in the continuum (BICs) offer strong confinement of optical fields, ideal for coupling with 2D TMDCs. Here, we demonstrate enhanced light-matter coupling by integrating TMDC mono-layers, including WSe2 and MoS2, with a finite-area membrane metasurface, leading to amplified and high-quality-factor (Q-factor) spontaneous emission from quasi-BIC-coupled TMDC monolayers. The high-Q-factor emission extends over an area with a scale of a few micrometers while maintaining the high-Q factor across the emission area. Notably, the suspended finite-area membrane metasurface, which is freestanding in air rather than positioned atop a substrate, minimizes radiation loss while enhancing light-matter interaction in the TMDC monolayer. Furthermore, the predominantly in-plane dipole orientation of excitons within TMDC monolayers results in distinctive enhancement behaviors for emission, contingent on the excitation power, when coupled with quasi-BIC modes exhibiting TE and TM resonances. This work introduces a nanophotonic platform for robust coupling of membrane metasurfaces with 2D materials, offering possibilities for developing 2D material-based nanophotonic and quantum devices. description_type: abstract lang: und ## Creator - name: Ya-Lun Ho role: author orcid: https://orcid.org/0000-0001-8274-5978 - name: Chee Fai Fong role: author orcid: https://orcid.org/0000-0003-1676-4665 - name: Yen-Ju Wu role: author orcid: https://orcid.org/0000-0003-2647-3407 - name: Kuniaki Konishi role: author orcid: https://orcid.org/0000-0003-2389-9787 - name: Chih-Zong Deng role: author - name: Jui-Han Fu role: author - name: Yuichiro K. Kato role: author orcid: https://orcid.org/0000-0002-9942-1459 - name: Kazuhito Tsukagoshi role: author orcid: https://orcid.org/0000-0001-9710-2692 - name: Vincent Tung role: author - name: Chun-Wei Chen role: author orcid: https://orcid.org/0000-0003-3096-249X ## Contact agent ## Publisher organization: American Chemical Society (ACS) ## Managing organization ## Keyword - subject: suspended metasurface schema: not_defined - subject: membranes schema: not_defined - subject: BIC schema: not_defined - subject: light-matter coupling schema: not_defined - subject: TMDC monolayers schema: not_defined - subject: WSe2 schema: not_defined - subject: MoS2 schema: not_defined ## Rights - description: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © 2024 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.4c05560 identifier: http://rightsstatements.org/vocab/InC/1.0/ ## Other identifier(s) ## Data origin - data_origin_type: other ## Embargo start_date: 2024-08-21 end_date: 2025-08-21 ## Journal - title: ACS Nano issn: '19360851' volume: '18' issue: '35' start_page: 24173 end_page: 24181 ## Conference ## Related item ## Funding - funder_name: NIMS - identifier: 108L9008 funder_name: Center of Atomic Initiative for New Materials, National Taiwan University - identifier: JP21H04660 funder_name: JSPS - identifier: JP22K14623 funder_name: JSPS - identifier: JP23H00253 funder_name: JSPS - identifier: JP23H00262 funder_name: JSPS - identifier: JP23H01461 funder_name: JSPS - identifier: JP23K26155 funder_name: JSPS - identifier: JP24K17627 funder_name: JSPS - funder_name: Ministry of Education, Culture, Sports, Science and Technology - identifier: 112-2124-M-002-010 funder_name: NSTC, Taiwan - identifier: 108L9008 funder_name: Ministry of Education, Taiwan ## Instrument ## Instrument operator ## Instrument managing organization ## Measurement method ## Specimen ## Chemical composition ## Structure for specimen ## Structural feature for specimen ## Specific property for specimen ## Process for specimen treatment ## Computational method ## Energy level/transition state ## Software ## Custom property ## Fileset - id: aac0c077-d81f-4ef5-8796-ce0326c46ad7 filename: nn-2024-055605.R2_Proof_hi.pdf content_type: application/pdf size: 966524 md5: 153c07fda4d62d8f51f6a3d2f7828f31 ## Thumbnail fileset_id: aac0c077-d81f-4ef5-8796-ce0326c46ad7 filename: nn-2024-055605.R2_Proof_hi.pdf