# Comprehensive Analysis of Optical Resonances and Sensing Performance in Metasurfaces of Silicon-Nanogap Unit

https://mdr.nims.go.jp/datasets/36b5d6e9-df1c-4ef7-8830-d63b871d7114

## File

- [Iwanaga_Photonics11(2024)1053-v2.pdf](https://mdr.nims.go.jp/filesets/3a6b131f-e8f7-48fb-883b-bbf7a4d1cc7d/download) ([Detail](https://mdr.nims.go.jp/filesets/3a6b131f-e8f7-48fb-883b-bbf7a4d1cc7d.md))

## Id

36b5d6e9-df1c-4ef7-8830-d63b871d7114

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-12T00:15:54.253042Z

## Updated at

2024-11-12T23:31:31.003919Z

## Published at

2024-11-12T23:31:31.058939Z

## Doi



## First published url

https://doi.org/10.3390/photonics11111053

## Date published

2024-11-10

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Comprehensive Analysis of Optical Resonances and Sensing Performance in Metasurfaces
    of Silicon-Nanogap Unit
  title_type: original
  lang: en

## Description

- description: Metasurfaces composed of silicon-nanogap unit have a variety of optical
    resonances, including bound states in the continuum (BIC). We show comprehensive
    numerical results on metasurfaces of Si-nanogap units, analyze the optical resonances,
    and clarify optically prominent resonances as well as symmetry-forbidding resonances
    that are the BIC, based on the numerical analyses of optical spectra and resonant
    electromagnetic-field distributions. Introducing asymmetry in the unit cell, the
    BIC become optically allowed, being identified as magnetic dipole, electric quadrupole,
    and magnetic quadrupole resonances. Moreover, the optical resonances are examined
    in terms of refractive-index sensing performance. A pair of the resonances associated
    with electric-field localization at nanogap was found to be sensitive to the refractive
    index contacting with the metasurfaces. Consequently, the gap-mode resonances
    are shown to be suitable for a wide range of the refractive-index sensing over
    1.0--2.0.
  description_type: abstract
  lang: eng

## Creator

- name: 岩長 祐伸
  role: author
  orcid: https://orcid.org/0000-0002-8930-6940
  organization: National Institute for Materials Science
  department: Research Center for Electronic and Optical Materials/Optical Materials
    Field/Nanophotonics Group
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Multidisciplinary Digital Publishing Institute (MDPI)

## Managing organization



## Keyword

- subject: all-dielectric metasurface
  schema: not_defined
- subject: silicon nanogap
  schema: not_defined
- subject: BIC
  schema: not_defined
- subject: optical sensing
  schema: not_defined
- subject: refractive index
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Photonics
  issn: '23046732'
  volume: '11'
  issue: '11'
  article_number: '1053'

## Conference



## Related item



## Funding

- identifier: JP24K01389
  funder_name: 日本学術振興会

## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



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## Fileset

- id: 3a6b131f-e8f7-48fb-883b-bbf7a4d1cc7d
  filename: Iwanaga_Photonics11(2024)1053-v2.pdf
  content_type: application/pdf
  size: 3240777
  md5: ba4e950af4cec5e001cbb3eba096ae1f

## Thumbnail

fileset_id: 3a6b131f-e8f7-48fb-883b-bbf7a4d1cc7d
filename: Iwanaga_Photonics11(2024)1053-v2.pdf