In-situ deposition of sparse vertically aligned carbon nanofibres on catalytically activated stainless steel mesh for field emission applications

Matthew Cole, Kai Hou, Jamie H. Warner, J. S. Barnard, Kai Ying, Y. Zhang, C. Li, Kenneth B.K. Teo, W I Milne

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We report on an inexpensive, facile and industry viable carbon nanofibre catalyst activation process achieved by exposing stainless steel mesh to an electrolyzed metal etchant. The surface evolution of the catalyst islands combines low-rate electroplating and substrate dissolution. The plasma enhanced chemical vapour deposited carbon nanofibres had aspect-ratios > 150 and demonstrated excellent height and crystallographic uniformity with localised coverage. The nanofibres were well-aligned with spacing consistent with the field emission nearest neighbour electrostatic shielding criteria, without the need of any post-growth processing. Nanofibre inclusion significantly reduced the emission threshold field from 4.5 V/μm (native mesh) to 2.5 V/μm and increased the field enhancement factor to approximately 7000.

Original languageEnglish
Pages (from-to)66-71
Number of pages6
JournalDiamond and Related Materials
Volume23
DOIs
Publication statusPublished - Mar 2012

Fingerprint

Carbon nanofibers
Stainless Steel
Nanofibers
Field emission
mesh
stainless steels
field emission
electrostatic shielding
Stainless steel
catalysts
Catalysts
etchants
carbon
electroplating
Electroplating
Shielding
aspect ratio
Aspect ratio
Electrostatics
dissolving

Keywords

  • Carbon nanofibres
  • Coatings
  • Electrochemical processing
  • Field emission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Chemistry(all)
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

In-situ deposition of sparse vertically aligned carbon nanofibres on catalytically activated stainless steel mesh for field emission applications. / Cole, Matthew; Hou, Kai; Warner, Jamie H.; Barnard, J. S.; Ying, Kai; Zhang, Y.; Li, C.; Teo, Kenneth B.K.; Milne, W I.

In: Diamond and Related Materials, Vol. 23, 03.2012, p. 66-71.

Research output: Contribution to journalArticle

Cole, Matthew ; Hou, Kai ; Warner, Jamie H. ; Barnard, J. S. ; Ying, Kai ; Zhang, Y. ; Li, C. ; Teo, Kenneth B.K. ; Milne, W I. / In-situ deposition of sparse vertically aligned carbon nanofibres on catalytically activated stainless steel mesh for field emission applications. In: Diamond and Related Materials. 2012 ; Vol. 23. pp. 66-71.
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