# Stable Field Emissions from Zirconium Carbide Nanoneedle Electron Source

https://mdr.nims.go.jp/datasets/cb6b9ca9-88eb-405f-a6d9-eafe9a393f47

## File

- [nanomaterials-15-00093-v2.pdf](https://mdr.nims.go.jp/filesets/7fc42fca-e6e8-45b9-825d-15b6372a7901/download) ([Detail](https://mdr.nims.go.jp/filesets/7fc42fca-e6e8-45b9-825d-15b6372a7901.md))

## Id

cb6b9ca9-88eb-405f-a6d9-eafe9a393f47

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-04-03T03:26:11.459532Z

## Updated at

2025-04-08T04:15:59.181668Z

## Published at

2025-04-07T13:19:43.687454Z

## Doi



## First published url

https://doi.org/10.3390/nano15020093

## Date published

2025-01-09

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Stable Field Emissions from Zirconium Carbide Nanoneedle Electron Source
  title_type: original
  lang: en

## Description

- description: In this study, a single zirconium carbide (ZrC) nanoneedle structure
    oriented in the <100> direction was fabricated by a dual-beam focused ion beam
    (FIB-SEM) system, and its field emission characteristics and emission current
    stability were evaluated. Benefiting from controlled fabrication with real-time
    observation, the ZrC nanoneedle has a smooth surface and a tip with a radius of
    curvature smaller than 20 nm and a length greater than 2 μm. Due to its low work
    function and well-controlled morphology, the ZrC nanoneedle emitter, positioned
    in a high-vacuum chamber, was able to generate a single and collimated electron
    beam with a current of 1.2 nA at a turn-on voltage of 210 V, and the current increased
    to 100 nA when the applied voltage reached 325 V. After the treatment of the nanoneedle
    tip, the field emission exhibited a stable emission for 150 min with a fluctuation
    of 1.4% and an emission current density as high as 1.4 × 1010 A m−2. This work
    presents an efficient and controllable method for fabricating nanostructures,
    and this method is applicable to the transition metal compound ZrC as a field
    emission emitter, demonstrating its potential as an electron source for electron-beam
    devices.
  description_type: abstract
  lang: und

## Creator

- name: Yimeng Wu
  role: author
  orcid: https://orcid.org/0009-0001-9780-8203
  organization: National Institute for Materials Science
- name: Jie Tang
  role: author
  orcid: https://orcid.org/0000-0002-5871-5776
  organization: National Institute for Materials Science
- name: Shuai Tang
  role: author
- name: You-Hu Chen
  role: author
  organization: National Institute for Materials Science
- name: Ta-Wei Chiu
  role: author
  organization: National Institute for Materials Science
- name: Masaki Takeguchi
  role: author
  orcid: https://orcid.org/0000-0002-0282-6020
  organization: National Institute for Materials Science
- name: Ayako Hashimoto
  role: author
  orcid: https://orcid.org/0000-0002-1985-7667
  organization: National Institute for Materials Science
- name: Lu-Chang Qin
  role: author

## Contact agent



## Publisher

organization: MDPI AG

## Managing organization



## Keyword

- subject: zirconium carbide
  schema: not_defined
- subject: nanoneedle
  schema: not_defined
- subject: electron source
  schema: not_defined
- subject: stable field emission
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nanomaterials
  issn: '20794991'
  volume: '15'
  issue: '2'
  article_number: '93'

## Conference



## Related item



## Funding

- funder_name: National Institute for Materials Science (NIMS)
- identifier: JPMXP1224NM5231
  funder_name: Transmission Electron Microscopy Unit, Surface and Bulk Analysis Unit
    in NIMS

## 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: 7fc42fca-e6e8-45b9-825d-15b6372a7901
  filename: nanomaterials-15-00093-v2.pdf
  content_type: application/pdf
  size: 2145424
  md5: 690e13a6c8a989245786939884558e51

## Thumbnail

fileset_id: 7fc42fca-e6e8-45b9-825d-15b6372a7901
filename: nanomaterials-15-00093-v2.pdf