Growth Of Graphitic Polyhedra, SiC Platelets, And Carbon Nanotubes Filled With SiC Nanowires By Laser Ablation

Journal Article · Fri Oct 08 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3507106· OSTI ID:21426583

Kokai, Fumio; Uchiyama, Kunihiro; Chigusa, Hajime; Nozaki, Iori; Noguchi, Eriko; Kameda, Yuto; Koshio, Akira ^[1]

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1. Division of Chemistry for Materials, Mie University, 1577 Kurimamachiya, Tsu, Mie 514-8507 (Japan)

Three characteristic silicon/carbon nanostructures, i.e., graphitic polyhedral (GP) particles, silicon carbide (SiC) platelets, and carbon nanotubes (CNTs) filled with SiC nanowires, were synthesized by the laser ablation of Si-C targets in the presence of high-pressure Ar gas up to 0.9 MPa. The growth of nanostructures was controlled merely by adjusting the Si content in graphite and the ambient Ar gas pressure. Deposits containing GP particles were purified by heat treatment at 550 deg. C in a pure oxygen atmosphere for 1 h. CNTs filled with SiC nanowires were grown without a catalyst. Unlike previous studies of CNTs filled with metals or compounds, all the CNTs checked by transmission electron microscopy contained SiC nanowires and no unfilled CNTs were produced. We discuss the growth mechanisms of the three nanostructures.

• OSTI ID: 21426583
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1278; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ABLATION
CARBIDES
CARBON
CARBON COMPOUNDS
CATALYSTS
CRYSTAL GROWTH
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
ELEMENTS
GRAPHITE
HEAT TREATMENTS
LASER RADIATION
MICROSCOPY
MINERALS
NANOSTRUCTURES
NANOTUBES
NONMETALS
OXYGEN
PARTICLES
QUANTUM WIRES
RADIATIONS
SCANNING ELECTRON MICROSCOPY
SEMIMETALS
SILICON
SILICON CARBIDES
SILICON COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY