Structure and field-emission properties of sub-micrometer-sized Tungsten-whisker arrays fabricated by vapor deposition

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Shiliang Wang
  • Yuehui He
  • Xiaosheng Fang
  • Jin Zou
  • Yong Wang
  • Han Huang
  • Pedro M. F. J. Costa
  • Min Song
  • Baiyun Huang
  • Peter K. Liaw
  • Yoshio Bando
  • Dmitri Colberg

Detail(s)

Original languageEnglish
Pages (from-to)2387-2392
Journal / PublicationAdvanced Materials
Volume21
Issue number23
Publication statusPublished - 19 Jun 2009
Externally publishedYes

Abstract

A study was conducted to investigate the structure and field-emission properties of sub-micrometer-sized tungsten-whisker arrays fabricated by vapor deposition. Scanning electron microscopy (SEM) images revealed that the synthesized whiskers had an average diameter of 180 nm and a length of up to 20 μm. Energy-dispersive spectroscopy (EDS) analyses of the whiskers revealed that they consisted of pure elemental tungsten. Transmission electron microscopy (TEM) was also employed to understand the detailed structural characteristics of the whiskers. TEM images confirmed that they had faceted tips and uniform lateral dimensions along the axial direction. High-resolution TEM (HRTEM) and corresponding selected-area diffraction (SAED) analyses also revealed that the tungsten whiskers were single crystalline with a bcc structure and grew along the (111) directions.

Citation Format(s)

Structure and field-emission properties of sub-micrometer-sized Tungsten-whisker arrays fabricated by vapor deposition. / Wang, Shiliang; He, Yuehui; Fang, Xiaosheng et al.
In: Advanced Materials, Vol. 21, No. 23, 19.06.2009, p. 2387-2392.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review