# A van der Waals Moiré Bilayer Photonic Crystal Cavity

https://mdr.nims.go.jp/datasets/aef3a4f8-cce3-4ee2-b2b2-0023f11a09a5

## File

- [2025A01393G_revised_Main Text clean.pdf](https://mdr.nims.go.jp/filesets/7ae92cc8-fb96-4b5d-a11a-794fce3dc5a2/download) ([Detail](https://mdr.nims.go.jp/filesets/7ae92cc8-fb96-4b5d-a11a-794fce3dc5a2.md))

## Id

aef3a4f8-cce3-4ee2-b2b2-0023f11a09a5

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-06-25T06:23:41.901242Z

## Updated at

2026-06-26T05:16:31.380060Z

## Published at

2026-09-16T23:25:43.046841Z

## Doi



## First published url

https://doi.org/10.1021/acs.nanolett.5c03959

## Date published

2025-10-01

## Recorded date published

2025-10-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: A van der Waals Moiré Bilayer Photonic Crystal Cavity
  title_type: original
  lang: en

## Description

- description: Enhancing light–matter interactions with photonic structures is critical
    in classical and quantum nanophotonics. Recently, Moiré twisted bilayer optical
    materials have been proposed as a promising means toward a tunable platform for
    nanophotonic devices. However, the realization of Moiré photonic crystal (PhC)
    cavities has been challenging, due to a lack of advanced nanofabrication techniques
    and availability of stand-alone transparent membranes. Here, we leverage the properties
    of the van der Waals material hexagonal boron nitride to realize Moiré bilayer
    PhC cavities. We design and fabricate a range of devices with controllable twist
    angles, with flatband modes in the visible spectral range (∼450 nm). Optical characterization
    confirms the presence of spatially periodic cavity modes originating from the
    engineered dispersion relation (flatband). Our findings present a major step toward
    harnessing a two-dimensional van der Waals material for the next generation of
    on chip, twisted nanophotonic systems.
  description_type: abstract
  lang: en

## Creator

- name: Lesley Spencer
  role: author
- name: Nathan Coste
  role: author
- name: Xueqi Ni
  role: author
- name: Seungmin Park
  role: author
- name: Otto C. Schaeper
  role: author
- name: Young Duck Kim
  role: author
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Milos Toth
  role: author
- name: Anastasiia Zalogina
  role: author
- name: Haoning Tang
  role: author
- name: Igor Aharonovich
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Moiré photonic crysta
  schema: not_defined
- subject: Hexagonal boron nitride
  schema: not_defined
- subject: Flatband
  schema: not_defined

## Rights

- description: This document is the Accepted Manuscript version of a Published Article
    that appeared in final form in Nano Letters, copyright © 2025 American Chemical
    Society. To access the final published article see https://doi.org/10.1021/acs.nanolett.5c03959.
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2025-09-17
end_date: 2026-09-17

## Journal

- title: Nano Letters
  issn: '15306984'
  volume: '25'
  issue: '39'
  start_page: 14459
  end_page: 14466

## Conference



## Related item



## Funding

- identifier: 2022M3H4A1A04096396
  funder_name: National Research Foundation of Korea
- identifier: RS-2023-00254055
  funder_name: National Research Foundation of Korea
- identifier: FA2386-25-1-4044
  funder_name: Air Force Office of Scientific Research
- identifier: CE200100010
  funder_name: Australian Research Council
- identifier: DP240103127
  funder_name: Australian Research Council
- identifier: FT220100053
  funder_name: Australian Research Council
- identifier: N62909-22-1-2028
  funder_name: Office of Naval Research Global
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: 23H02052
  funder_name: Japan Society for the Promotion of Science

## 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



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## Fileset

- id: 7ae92cc8-fb96-4b5d-a11a-794fce3dc5a2
  filename: 2025A01393G_revised_Main Text clean.pdf
  content_type: application/pdf
  size: 1736234
  md5: 5ebae46044f1c070bbc3f85c5e252ea4

## Thumbnail

fileset_id: 7ae92cc8-fb96-4b5d-a11a-794fce3dc5a2
filename: 2025A01393G_revised_Main Text clean.pdf