# Nanoscale Thermal Transport in Bi                    <sub>2</sub>                    (Te, Se)                    <sub>3</sub>                    Thermoelectric Material Using Pulsed STEM

https://mdr.nims.go.jp/datasets/8530c37f-8fa0-4e10-b964-84b8875f08d7

## File

- [Advanced Physics Research - 2026 - Cho - Nanoscale Thermal Transport in Bi2 Te  Se 3 Thermoelectric Material Using Pulsed (1).pdf](https://mdr.nims.go.jp/filesets/7cee8cc3-03ea-483b-bf38-dec361ceca30/download) ([Detail](https://mdr.nims.go.jp/filesets/7cee8cc3-03ea-483b-bf38-dec361ceca30.md))

## Id

8530c37f-8fa0-4e10-b964-84b8875f08d7

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-08-03T01:29:58.961487Z

## Updated at

2026-08-03T02:57:30.694970Z

## Published at

2026-08-03T05:30:26.124279Z

## Doi



## First published url

https://doi.org/10.1002/apxr.202600004

## Date published

2026-05-25

## Recorded date published

2026-7

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Nanoscale Thermal Transport in Bi                    <sub>2</sub>                    (Te,
    Se)                    <sub>3</sub>                    Thermoelectric Material
    Using Pulsed STEM
  title_type: original
  lang: en

## Description

- description: Understanding thermal transport properties at the nanoscale can provide
    strategies for efficiently managing heat or improvingenergy conversion efficiency
    in various applications. Furthermore, when thermal paths can be traced and imaged
    at the nanoscale,materials or electronic devices can be designed to minimize heat
    loss. The demand for these technologies continues to grow rapidly.Here, we demonstrate
    imaging of thermal propagation in thermoelectric material (Bi 2 (Te, Se) 3 ) using
    a spatially resolved techniquethat uses thermal waves induced by a pulsed convergent
    electron beam in a scanning transmission electron microscopy (STEM)mode at room
    temperature. The measurements with nanoscale clearly reveal the anisotropy inherent
    in Bi 2 (Te, Se) 3 by quantifyingthe relative values of phase delay at each irradiated
    position. Also, the thermal wave propagation is significantly sensitive to thedirections
    of the media, as if the heat carriers lose their memory of the vibration mode
    in each direction and switch to a newmode. Capturing various thermal properties,
    such as directional thermal pathways, from nanoscale imaging can provide a deeperunderstanding
    of how materials affect heat transport. This insight plays a vital role in designing
    materials for thermal managementand energy conversion devices.
  description_type: abstract
  lang: und

## Creator

- name: Hyunyong Cho
  role: author
  orcid: https://orcid.org/0009-0006-3873-1177
  organization: National Institute for Materials Science
- name: Hieu Duy Nguyen
  role: author
- name: Isamu Yamada
  role: author
- name: Koji Kimoto
  role: author
  orcid: https://orcid.org/0000-0002-3927-0492
  organization: National Institute for Materials Science
- name: Takao Mori
  role: author
  orcid: https://orcid.org/0000-0003-2682-1846
  organization: National Institute for Materials Science
- name: Naoyuki Kawamoto
  role: author
  orcid: https://orcid.org/0000-0002-2022-3987
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: STEM像
  schema: not_defined
- subject: HAADF-STEM像
  schema: not_defined
- subject: 温度波位相像
  schema: not_defined
- subject: 温度波振幅像
  schema: not_defined
- subject: EDS
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2026-05-25

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Advanced Physics Research
  issn: '27511200'
  volume: '5'
  issue: '7'
  article_number: e00004

## Conference



## Related item



## Funding

- identifier: JPMXP1224NM5382
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMJPR24J4
  funder_name: Precursory Research for Embryonic Science and Technology
- identifier: JPMJMI19A1
  funder_name: JST-Mirai Program

## 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



## Software



## Custom property



## Fileset

- id: 7cee8cc3-03ea-483b-bf38-dec361ceca30
  filename: Advanced Physics Research - 2026 - Cho - Nanoscale Thermal Transport in
    Bi2 Te  Se 3 Thermoelectric Material Using Pulsed (1).pdf
  content_type: application/pdf
  size: 5416997
  md5: 7adc151bd0bc90317a524b9890403236

## Thumbnail

fileset_id: 7cee8cc3-03ea-483b-bf38-dec361ceca30
filename: Advanced Physics Research - 2026 - Cho - Nanoscale Thermal Transport in
  Bi2 Te  Se 3 Thermoelectric Material Using Pulsed (1).pdf