Development of coherent electron emission source of Pd-atom nanotips built on W (111)

E. Rokuta, C. Oshima

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have fabricated nano-scaled Pd atom clusters to apply to a field electron source, and the electron emission characteristics were investigated. Owing to the formation of the Pd nanotips, field electron beams were drastically converged within a cone angle of approximately 5 degree. This collimation of the electron beams was quite relevant to the case of previously-studied W nanoemitters. Analysis based on Fowler-Nordheim formalism, where work function of W (111) was assumed to be available for each specimen, predicts that the effective tip radius ranged from 150 and 200 nm for the conventional W emitter and from 20 to 30 nm for the Pd nanotip. Noticeably, the Pd nanotips were found to regenerate and to exhibit equivalent emission characteristics repeatedly. This unlimited revival function is significant for the practical use, and not possessed by the previously studied W nanotips.

Original languageEnglish
Title of host publicationIVESC2004 - 5th International Vacuum Electron Sources Conference Proceedings
Pages75-77
Number of pages3
Publication statusPublished - 2004
EventIVESC2004 - 5th International Vacuum Electron Sources Conference Proceedings - Beijing
Duration: 2004 Sep 62004 Sep 10

Other

OtherIVESC2004 - 5th International Vacuum Electron Sources Conference Proceedings
CityBeijing
Period04/9/604/9/10

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Development of coherent electron emission source of Pd-atom nanotips built on W (111)'. Together they form a unique fingerprint.

Cite this