# Co-Dominant Piezoelectric and Flexoelectric Effects in Twisted Double Bilayer Graphene

https://mdr.nims.go.jp/datasets/57e7f523-f5ef-4041-b9de-e5b4f3fffd79

## File

- [symmetry-16-01524.pdf](https://mdr.nims.go.jp/filesets/35e55beb-6d18-4db5-8f1f-c36d54f4793b/download) ([Detail](https://mdr.nims.go.jp/filesets/35e55beb-6d18-4db5-8f1f-c36d54f4793b.md))

## Id

57e7f523-f5ef-4041-b9de-e5b4f3fffd79

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-04T08:33:47.557471Z

## Updated at

2025-02-05T03:31:18.152059Z

## Published at

2025-02-05T03:31:18.226931Z

## Doi



## First published url

https://doi.org/10.3390/sym16111524

## Date published

2024-11-14

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Co-Dominant Piezoelectric and Flexoelectric Effects in Twisted Double Bilayer
    Graphene
  title_type: original
  lang: en

## Description

- description: 'Controlling the balance between piezoelectric and flexoelectric effects
    is crucial for tailoring the electromechanical responses of a material. In twisted
    graphene, it is found that the electromechanical response near the domain walls
    (DWs) is dominated by either the flexoelectric effect as in twisted bilayer graphene
    (tBLG), or the piezoelectric effect as in twisted monolayer- bilayer graphene
    (tMBG). The codominance of both effects in a single system is rare. Here, utilizing
    lateral piezoresponse force microscopy (LPFM), we show piezoelectric and flexoelectric
    effects can coexist and are equally important in twisted double bilayer graphene
    (tDBG), termed as piezo- flexoelectric effect. Unlike tBLG and tMBG, distinctive
    two-step LPFM spatial profiles are captured across the moiré DWs of tDBG. By decomposing
    the LPFM signal into axisymmetric and antisymmetric components, we find that the
    angular dependence of both components satisfies sinusoidal relations. The conclusion
    is further supported by continuum mechanics simulations. Our results demonstrate
    that the stacking configuration serves as a powerful tuning knob for modulating
    the electromechanical responses of twisted van der Waals '
  description_type: abstract
  lang: und

## Creator

- name: Yuanhao Wei
  role: author
- name: Yuhao Li
  role: author
- name: Hanhao Zhang
  role: author
- name: Shengsheng Lin
  role: author
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
- name: Cun-Fa Gao
  role: author
- name: Yan Shi
  role: author
  orcid: https://orcid.org/0000-0001-7421-3306

## Contact agent



## Publisher

organization: MDPI AG

## Managing organization



## Keyword

- subject: Piezoelectric effect
  schema: not_defined
- subject: flexoelectric effect
  schema: not_defined
- subject: twisted graphene
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Symmetry
  issn: '20738994'
  volume: '16'
  issue: '11'
  article_number: '1524'

## Conference



## Related item



## Funding

- identifier: 2021YFA0715600
  funder_name: National Key Research and Development Program of China
- identifier: '12072150'
  funder_name: National Natural Science Foundation of China
- identifier: '12274222'
  funder_name: National Natural Science Foundation of China
- identifier: '12404217'
  funder_name: National Natural Science Foundation of China
- identifier: BK20220756
  funder_name: National Science Foundation of Jiangsu Province
- identifier: 2022A1515011773
  funder_name: Natural Science Foundation of Guangdong Province
- identifier: '51921003'
  funder_name: National Natural Science Foundation of China for Creative Research
    Groups
- identifier: 21H05233
  funder_name: JSPS KAKENHI
- identifier: 23H02052
  funder_name: JSPS KAKENHI
- funder_name: World Premier International Research Center Initiative (WPI), MEXT,
    Japan

## 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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## Custom property



## Fileset

- id: 35e55beb-6d18-4db5-8f1f-c36d54f4793b
  filename: symmetry-16-01524.pdf
  content_type: application/pdf
  size: 2734299
  md5: 0bbdebefdf38ec842c6e30e5baf6a1f8

## Thumbnail

fileset_id: 35e55beb-6d18-4db5-8f1f-c36d54f4793b
filename: symmetry-16-01524.pdf