Growth of multiwalled-carbon nanotubes using vertically aligned carbon nanofibers as templates/scaffolds and improved field-emission properties

H. Cui; X. Yang; L. R. Baylor; D. H. Lowndes

doi:10.1063/1.1852730

Growth of multiwalled-carbon nanotubes using vertically aligned carbon nanofibers as templates/scaffolds and improved field-emission properties

H. Cui, X. Yang, L. R. Baylor, D. H. Lowndes

Fusion Energy Division

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Multiwalled-carbon nanotubes (MWCNTs) are grown on top of vertically aligned carbon nanofibers (VACNFs) via microwave plasma-enhanced chemical vapor deposition (MPECVD). The VACNFs are first grown in a direct-current plasma-enhanced chemical vapor deposition reactor using nickel catalyst. A layer of carbon-silicon materials is then deposited on the VACNFs and the nickel catalyst particle is broken down into smaller nanoparticles during an intermediate reactive-ion-plasma deposition step. These nickel nanoparticles nucleate and grow MWCNTs in the following MPECVD process. Movable-probe measurements show that the MWCNTs have greatly improved field-emission properties relative to the VACNFs.

Original language	English
Article number	053110
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	5
DOIs	https://doi.org/10.1063/1.1852730
State	Published - Jan 31 2005

Funding

The authors would like to thank P. H. Fleming for metal evaporation and Dr. M. A. Guillorn for supplying patterned silicon substrates. This research was supported by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory (ORNL), by the Office of Basic Energy Sciences, Division of Materials Sciences, U.S. Department of Energy (DOE), and by the Interlaboratory Center of Excellence for Synthesis and Processing of Carbon Materials (DOE). The research was carried out at ORNL, managed by UT-Battelle, LLC, for the U.S. DOE. This research also was supported in part by an appointment (H.C.) to the ORNL Postdoctoral Research Associates Program sponsored by ORNL and administered jointly by ORNL and by the Oak Ridge Institute for Science and Education.

Funders	Funder number
Division of Materials Sciences
Interlaboratory Center of Excellence for Synthesis and Processing of Carbon Materials
U.S. Department of Energy
Basic Energy Sciences
Oak Ridge National Laboratory
Oak Ridge Institute for Science and Education

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abstract = "Multiwalled-carbon nanotubes (MWCNTs) are grown on top of vertically aligned carbon nanofibers (VACNFs) via microwave plasma-enhanced chemical vapor deposition (MPECVD). The VACNFs are first grown in a direct-current plasma-enhanced chemical vapor deposition reactor using nickel catalyst. A layer of carbon-silicon materials is then deposited on the VACNFs and the nickel catalyst particle is broken down into smaller nanoparticles during an intermediate reactive-ion-plasma deposition step. These nickel nanoparticles nucleate and grow MWCNTs in the following MPECVD process. Movable-probe measurements show that the MWCNTs have greatly improved field-emission properties relative to the VACNFs.",

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Growth of multiwalled-carbon nanotubes using vertically aligned carbon nanofibers as templates/scaffolds and improved field-emission properties

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