Parametrically optimized carbon nanotube-coated cold cathode spindt arrays

Xuesong Yuan, Matthew Cole, Yu Zhang, Jianqiang Wu, William I. Milne, Yang Yan

Research output: Contribution to journalArticle

13 Citations (Scopus)
44 Downloads (Pure)

Abstract

Here, we investigate, through parametrically optimized macroscale simulations, the field electron emission from arrays of carbon nanotube (CNT)-coated Spindts towards the development of an emerging class of novel vacuum electron devices. The present study builds on empirical data gleaned from our recent experimental findings on the room temperature electron emission from large area CNT electron sources. We determine the field emission current of the present microstructures directly using particle in cell (PIC) software and present a new CNT cold cathode array variant which has been geometrically optimized to provide maximal emission current density, with current densities of up to 11.5 A/cm2 at low operational electric fields of 5.0 V/μm.

Original languageEnglish
Article number13
JournalNanomaterials
Volume7
Issue number1
DOIs
Publication statusPublished - 12 Jan 2017

Keywords

  • Carbon nanotube
  • Cold cathode
  • Electron gun
  • Field emission

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemical Engineering(all)

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