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Updated: Mar 5, 2026

Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays

Dry Oxidation and Vacuum Annealing Treatments for Tuning the Wetting Properties of Carbon Nanotube Arrays

Published on: April 15, 2013

Parametrically Optimized Carbon Nanotube-Coated Cold Cathode Spindt Arrays.

Xuesong Yuan¹, Matthew T Cole², Yu Zhang³

¹School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China. yuanxs@uestc.edu.cn.

Nanomaterials (Basel, Switzerland)

|March 25, 2017

Summary

This summary is machine-generated.

This study optimizes carbon nanotube (CNT)-coated Spindt arrays for novel vacuum electron devices. Simulations show a new CNT cold cathode array achieves high current densities at low electric fields.

Keywords:

carbon nanotube cold cathode electron gun field emission

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Area of Science:

Materials Science
Physics
Electrical Engineering

Background:

Investigates field electron emission from carbon nanotube (CNT)-coated Spindt arrays.
Builds upon experimental data of room temperature electron emission from large-area CNT sources.

Purpose of the Study:

Develop novel vacuum electron devices.
Optimize CNT-coated Spindt arrays for maximal emission current density.

Main Methods:

Parametrically optimized macroscale simulations.
Particle-in-cell (PIC) software for direct field emission current determination.
Geometric optimization of CNT cold cathode array variants.

Main Results:

Achieved high current densities of up to 11.5 A/cm².
Demonstrated effective emission at low operational electric fields of 5.0 V/μm.
Presented a new, geometrically optimized CNT cold cathode array.

Conclusions:

Parametric optimization and geometric design are crucial for enhancing field electron emission.
The developed CNT cold cathode array shows significant potential for advanced vacuum electron devices.