# Anisotropic Strain Observation in Naturally Occurring Buckling on Twisted Bilayer Graphene: A Nano-Raman Study

https://mdr.nims.go.jp/datasets/2de68966-c022-4885-92ee-77908cd831d9

## File

- [soares-et-al-2025-anisotropic-strain-observation-in-naturally-occurring-buckling-on-twisted-bilayer-graphene-a-nano.pdf](https://mdr.nims.go.jp/filesets/cfd3acc8-fe32-49d2-b148-d0d7cbd4d2a3/download) ([Detail](https://mdr.nims.go.jp/filesets/cfd3acc8-fe32-49d2-b148-d0d7cbd4d2a3.md))

## Id

2de68966-c022-4885-92ee-77908cd831d9

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-02-14T06:25:16.858925Z

## Updated at

2026-02-16T07:30:33.715235Z

## Published at

2026-02-16T04:57:30.290325Z

## Doi



## First published url

https://doi.org/10.1021/acs.jpcc.5c00506

## Date published

2025-04-17

## Recorded date published

2025-4-17

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'Anisotropic Strain Observation in Naturally Occurring Buckling on Twisted
    Bilayer Graphene: A Nano-Raman Study'
  title_type: original
  lang: en

## Description

- description: Twisted bilayer graphene (tBG) is an exuberant electronic system, exhibiting
    a wide variety of electronic behaviors intricately influenced by both the twist
    angle and internal built-in strain. In our study, we explore how naturally occurring
    variations in the mismatch angle in bilayer graphene result in localized strain
    gradients. These gradients are sufficient to store elastic energy, promoting deterministic
    buckling phenomena. Utilizing tip-enhanced Raman spectroscopy, we conducted nanometer-scale
    mapping of twist angle, strain distribution, and elastic energy across tBG, identifying
    pronounced and deterministic fluctuations in Raman peak shifts, particularly within
    the 2D band on wrinkled areas. This analysis enabled us to distinguish between
    uniaxial and biaxial strain effects and to evaluate the elastic energy that remains
    within these structures. Supported by finite element modeling, our results elucidate
    the relationship between anisotropic strain dynamics and buckling behavior, enhancing
    our understanding of tBG’s mechanical properties. Our findings contribute to the
    field of strain engineering in tBG and suggest new possibilities for tailoring
    the electronic and structural characteristics of these materials at the nanoscale.
  description_type: abstract
  lang: und

## Creator

- name: Gustavo Soares
  role: author
- name: Rafael R. Barreto
  role: author
- name: Rafael Nadas
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Leonardo C. Campos
  role: author
- name: Luiz G. Cançado
  role: author
- name: Angelo Malachias
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: 'twisted bilayer graphene (tBG)
    '
  schema: not_defined
- subject: 'anisotropic strain
    '
  schema: not_defined
- subject: 'nano-Raman spectroscopy
    '
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-04-05

## Other identifier(s)



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## Embargo



## Journal

- title: The Journal of Physical Chemistry C
  issn: '19327447'
  volume: '129'
  issue: '15'
  start_page: 7508
  end_page: 7519

## Conference



## Related item



## Funding

- funder_name: Instituto Nacional de Ci?ncia e Tecnologia em Nanomateriais de Carbono
- funder_name: Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais
- funder_name: Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico
- funder_name: Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior

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## Fileset

- id: cfd3acc8-fe32-49d2-b148-d0d7cbd4d2a3
  filename: soares-et-al-2025-anisotropic-strain-observation-in-naturally-occurring-buckling-on-twisted-bilayer-graphene-a-nano.pdf
  content_type: application/pdf
  size: 6230829
  md5: e01fcef2f3989e2896c2acd289b12e74

## Thumbnail

fileset_id: cfd3acc8-fe32-49d2-b148-d0d7cbd4d2a3
filename: soares-et-al-2025-anisotropic-strain-observation-in-naturally-occurring-buckling-on-twisted-bilayer-graphene-a-nano.pdf