# Atom-by-atom imaging of moiré transformations in 2D transition metal dichalcogenides

https://mdr.nims.go.jp/datasets/4ba05f93-e32e-4847-8b05-d77906c3a479

## File

- [sciadv.adk1874.pdf](https://mdr.nims.go.jp/filesets/70fd193e-ef04-47dc-9a45-6ab4a98d58aa/download) ([Detail](https://mdr.nims.go.jp/filesets/70fd193e-ef04-47dc-9a45-6ab4a98d58aa.md))

## Id

4ba05f93-e32e-4847-8b05-d77906c3a479

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-18T00:51:33.854418Z

## Updated at

2025-02-23T13:46:14.766380Z

## Published at

2025-02-23T13:46:14.910324Z

## Doi



## First published url

https://doi.org/10.1126/sciadv.adk1874

## Date published

2024-03-29

## Recorded date published

2024-3-29

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Atom-by-atom imaging of moiré transformations in 2D transition metal dichalcogenides
  title_type: original
  lang: en

## Description

- description: Atomic arrangements at interfaces play a key role in two-dimensional
    (2D) multilayers, where misalignment-induced moiré structures govern the band
    structure and emergent interfacial properties. Therefore, understanding the atomic-scale
    mechanisms of 2D moiré formation and rearrangement is critical to precisely and
    reliably tailor the properties in 2D systems. Here, we visualize, atom-by-atom,
    thermally-induced structural evolution of twisted bilayer transition metal dichalcogenides
    (TB-TMDs), WSe2/WSe2 and WSe2/MoSe2 using in-situ transmission electron microscopy.
    We find that the moiré superlattice locally converts into nanoscale aligned domains
    at temperatures as low as 200°C. This process occurs by nucleating a new grain
    within one of the TMD monolayers, whose crystal orientation is templated by the
    other. The aligned domains grow through collective rotation of moiré supercells
    and hopping of 5|7 defect pairs at moiré boundaries. This new mechanism provides
    insight into the atomic-scale interactions that control moiré structures and illustrates
    the potential to pattern the interfacial structure and properties of 2D materials
    at the nanoscale.
  description_type: abstract
  lang: und

## Creator

- name: Yichao Zhang
  role: author
- name: Ji-Hwan Baek
  role: author
- name: Chia-Hao Lee
  role: author
- name: Yeonjoon Jung
  role: author
- name: Seong Chul Hong
  role: author
- name: Gillian Nolan
  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: Gwan-Hyoung Lee
  role: author
- name: Pinshane Y. Huang
  role: author

## Contact agent



## Publisher

organization: American Association for the Advancement of Science (AAAS)

## Managing organization



## Keyword

- subject: Atomic-scale mechanisms
  schema: not_defined
- subject: moiré materials
  schema: not_defined
- subject: electron microscopy
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Science Advances
  issn: '23752548'
  volume: '10'
  issue: '13'
  article_number: eadk1874

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## Fileset

- id: 70fd193e-ef04-47dc-9a45-6ab4a98d58aa
  filename: sciadv.adk1874.pdf
  content_type: application/pdf
  size: 4814416
  md5: 44bf4fac6dedf041360e86468455d2d1

## Thumbnail

fileset_id: 70fd193e-ef04-47dc-9a45-6ab4a98d58aa
filename: sciadv.adk1874.pdf