# Interpretable Structural Evaluation of Metal-Oxide Nanostructures in STEM Images via Persistent Homology

https://mdr.nims.go.jp/datasets/6ddc765b-dd1b-4a67-a9da-dd6da1e584ed

## File

- [abstract.docx](https://mdr.nims.go.jp/filesets/0a26e623-d857-4928-83ee-09351435b635/download) ([Detail](https://mdr.nims.go.jp/filesets/0a26e623-d857-4928-83ee-09351435b635.md))

## Id

6ddc765b-dd1b-4a67-a9da-dd6da1e584ed

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## Visibility

open_to_public

## State

published

## Created at

2024-11-26T08:53:50.503188Z

## Updated at

2024-11-27T07:30:45.141356Z

## Published at

2024-11-27T07:30:47.758877Z

## Doi

https://doi.org/10.48505/nims.5036

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## Date published



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## Resource type

conference_poster

## Manuscript type

na

## Collection



## Title

- title: Interpretable Structural Evaluation of Metal-Oxide Nanostructures in STEM
    Images via Persistent Homology
  title_type: original
  lang: en

## Description

- description: 'Persistent homology is a powerful tool for quantifying various structures,
    but it is equally crucial to maintain its interpretability for material design.
    In this study, we extracted interpretable geometric features from the persistent
    diagrams (PDs) of scanning transmission electron microscopy (STEM) images of self-assembled
    Pt-CeO2 nanostructures synthesized under different annealing conditions. Analysis
    of the PD quadrants provided five interpretable features: average width and total
    length of striped CeO2 phases, the number of CeO2 phases from zeroth PDs, and
    the numbers of ring- and arc-like structures from first PDs. Principal component
    analysis (PCA) and its component mapping onto PDs clarified that the number of
    small arc-like structures is especially important for describing Pt-CeO2 nano-
    structural changes. This descriptor enabled us to quantify the degree of disorder,
    namely the density of bends, in nanostructures formed under different conditions.
    By using this descriptor along with the width of the CeO2 phase, we could classify
    12 Pt-CeO2 nanostructures in an interpretable way.'
  description_type: abstract
  lang: eng

## Creator

- name: Ryuto Eguchi
  role: author
  orcid: https://orcid.org/0009-0003-2859-6934
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Battery
    and Cell Materials Field/Environment-Controlled Microscopy Group
- name: Yu Wen
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Advanced Measurement and Characterization/Atomic
    Structure and Physics Field/In-situ Characterization Technique Development Group
- name: Hideki Abe
  role: author
  orcid: https://orcid.org/0000-0002-8392-7586
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Hydrogen
    Technology Materials Field/Hydrogen Production Catalyst Materials Group
- name: Ayako Hashimoto
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Battery
    and Cell Materials Field/Environment-Controlled Microscopy Group

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## Keyword

- subject: persistent homology
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

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## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: NIMS Award Symposium 2024
start_date: 2024-11-06
end_date: 2024-11-07
identifier: https://www.nims.go.jp/nims-award-symposium/ja/index.html

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## Fileset

- id: 0a26e623-d857-4928-83ee-09351435b635
  filename: abstract.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 19044
  md5: 135f3590ac6122346853705d978064c6

## Thumbnail

fileset_id: 0a26e623-d857-4928-83ee-09351435b635
filename: abstract.docx