Atomic-scale field emitter with self-repairable function and thermodynamically stable structure: FEM study on Pd-covered nanopyramids on W<1 1 1> tips

E. Rokuta*, T. Itagaki, D. Miura, T. Moriyama, T. Ishikawa, B. L. Cho, T. Y. Fu, T. T. Tsong, C. Oshima

*この研究の対応する著者

研究成果: Article査読

13 被引用数 (Scopus)

抄録

We have fabricated nanometer-scaled pyramids on the W tip via Pd deposition and post-deposition annealing, and the field electron emission (FE) properties of the nanopyramids were investigated. Owing to the pyramid formation, the emission angles of the FE beams were drastically confined toward the forward direction. Further, the FE characteristics were reproduced via the self-repairing function inherently possessed by the nanopyramids. In the FEM observations, two characteristic features were seen. One is a rectangular triangle composed of three distinct spots, which is attributable to the trimer tip consisting of three atoms. The other pattern is a single bright spot, which is attributable to FE from a single atom tip. Semicone angle of the single-spot beam was 3.5°, which is comparable to those of the previous W nanotips.

本文言語English
ページ(範囲)205-209
ページ数5
ジャーナルApplied Surface Science
251
1-4
DOI
出版ステータスPublished - 2005 9月 15

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 凝縮系物理学

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