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Titolo:
Oriented carbon microfibers grown by catalytic decomposition of acetylene and their field emission properties
Autore:
Li, YJ; Lau, SP; Tay, BK; Chen, GY; Sun, Z; Chen, JS; You, GF; Sheeja, D;
Indirizzi:
Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore Nanyang Technol Univ Singapore Singapore 639798 gapore 639798, Singapore
Titolo Testata:
DIAMOND AND RELATED MATERIALS
fascicolo: 3-7, volume: 10, anno: 2001,
pagine: 878 - 882
SICI:
0925-9635(200103/07)10:3-7<878:OCMGBC>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
NANOTUBES; PYROLYSIS;
Keywords:
thermal chemical vapor deposition; microfibers; acetylene; field emission;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Li, YJ Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore Nanyang Technol Univ Singapore Singapore 639798 639798, Singapore
Citazione:
Y.J. Li et al., "Oriented carbon microfibers grown by catalytic decomposition of acetylene and their field emission properties", DIAM RELAT, 10(3-7), 2001, pp. 878-882

Abstract

Carbon fibers with a diameter approximately 1-2 mum have been synthesized by thermal chemical vapor deposition with a mixture of nitrogen and acetylene on nickel-coated silicon substrates in a furnace. The growth temperaturewas 1000 degreesC. Scanning electron microscopy micrographs showed that grass-like oriented carbon microfibers were produced with a relatively high density of 10(7)/cm(2). Nodular carbon structures could be obviously observed along the micro-fibers. This may suggest that those adjacent carbon spherulites probably grew simultaneously upwards to construct the oriented microfibers. The early growth of oriented carbon microfibers was possibly confined by the porous structures of nickel catalyst, which were formed while heat treatment. A threshold electric field as low as 2 V/mum and an emission site density of 10(4)/cm(2) could be achieved from the oriented carbon microfibers. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 00:52:37