Abstract

This paper describes a new method of growing carbon nanotube (CNT) arrays using laser welding of a catalyst metal onto the surface of a quartz substrate, followed by CNT growth through the chemical vapor deposition (CVD) process. A major advantage of this method is its ability to pattern the catalyst before growing the CNTs, thus allowing for the formation of CNTs at specific locations. The laser pre-treatment method minimized structural damage to CNTs in comparison to the laser post-processing method, achieving a lower ID/IG value of 0.72 in Raman spectroscopy analysis. Using hexagonally patterned CNT arrays on quartz, we achieve a field emission current density exceeding 1.3 mA/cm2 with a reduced turn-on field of 1.85 V/μm, representing a 25% improvement over filled-line patterns.

Department(s)

Mechanical and Aerospace Engineering

Publication Status

Open Access

Comments

National Science and Technology Council, Grant 111–2221-E-007–067-MY3

Keywords and Phrases

Carbon nanotube (CNT); Chemical vapor deposition (CVD); Laser welding

International Standard Serial Number (ISSN)

1726-0604; 0007-8506

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2025 Elsevier; International Academy for Production Engineering, All rights reserved.

Publication Date

01 Jan 2025

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Manufacturing Commons

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