Synthesis of Single- and Double-Wall Carbon Nanotubes by Gas Flow-Modified Catalyst-Supported Chemical Vapor Deposition

Naoki KISHI  Toshiki SUGAI  Hisanori SHINOHARA  

IEICE TRANSACTIONS on Electronics   Vol.E92-C   No.12   pp.1483-1486
Publication Date: 2009/12/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E92.C.1483
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Nanomaterials and Nanostructures
carbon nanotubes,  chemical vapor deposition,  raman spectroscopy,  transmission electron microscopy,  

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The synthesis of single- and double-wall carbon nanotubes by gas flow-modified, catalyst-supported chemical vapor deposition (CCVD) is reported. We have investigated the gas flow condition dependence on the synthesis of carbon nanotubes (CNTs) by placing blocks in the CCVD reactor. Carbon nanotubes having large diameters are preferentially grown under turbulent flow conditions. This indicates that the diameter distribution of CNTs can be controlled by modification of the gas flow condition in the CCVD.