Parametrically optimized carbon nanotube-coated cold cathode spindt arrays

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

doi:10.3390/nano7010013

Parametrically optimized carbon nanotube-coated cold cathode spindt arrays

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

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18 Citations (SciVal)

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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 language	English
Article number	13
Journal	Nanomaterials
Volume	7
Issue number	1
DOIs	https://doi.org/10.3390/nano7010013
Publication status	Published - 12 Jan 2017

Keywords

Carbon nanotube
Cold cathode
Electron gun
Field emission

ASJC Scopus subject areas

General Materials Science
General Chemical Engineering

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10.3390/nano7010013Licence: CC BY

nanomaterials-07-00013
This is the publisher's PDF of the following article: Yuan, X, Cole, M, Zhang, Y, Wu, J, Milne, WI & Yan, Y 2017, 'Parametrically optimized carbon nanotube-coated cold cathode spindt arrays' Nanomaterials, vol 7, no. 1, 13 , which has been published in final form at http://doi.org/10.3390/nano7010013. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for self-archiving.
Licence: CC BY

Cite this

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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.",

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AU - Yuan, Xuesong

AU - Cole, Matthew

AU - Zhang, Yu

AU - Wu, Jianqiang

AU - Milne, William I.

AU - Yan, Yang

PY - 2017/1/12

Y1 - 2017/1/12

N2 - 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.

AB - 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.

KW - Carbon nanotube

KW - Cold cathode

KW - Electron gun

KW - Field emission

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Parametrically optimized carbon nanotube-coated cold cathode spindt arrays

Abstract

Keywords

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