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Description:

<100> oriented single-crystalline ZrC nanoneedles were successfully fabricated using a dual-beam FIB-SEM system. Atomic characterization of the pristine ZrC crystal confirmed the consistency and uniformity of nanoneedles’ crystallographic orientation, ensuring tip stability and precision. Nanoneedles with 10-100 nm tip radii were evaluated as field emitters, yielding field enhancement factors of 1.78×10⁷ to 4.85×10⁶ m⁻¹ and tip emission areas of 0.93-97.3 nm². This work underscores the importance of geometric optimization in improving field emission performance and demonstrates a scalable and efficient method for developing high-performance electron sources for advanced electron-beam applications.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Field emission, Nanoneedle, Cold field emitter, ZrC

Date published: 2025-04-01

Publisher: IOP Publishing

Journal:

• Japanese Journal of Applied Physics (ISSN: 00214922) vol. 64 issue. 4 040904

Funding:

• National Institute for Materials Science JPMXP1224NM5231 (Advanced Research Infrastructure for Materials and Nanotechnology in Japan (ARIM))

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.35848/1347-4065/adcbf9

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Updated at: 2025-05-26 16:30:10 +0900

Published on MDR: 2025-05-26 16:20:41 +0900