Scanning tunneling microscope investigation of carbon nanotubes produced by catalytic decomposition of acetylene

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Résumé

A detailed scanning tunneling microscopy (STM) study of carbon nanotubes prepared by catalytic decomposition of acetylene over a supported transition metal catalyst is reported. Nanotubes with diameters in the 10-nm range and others with diameters as small as 1 nm were found. The mechanism of STM image formation and image deconvolution with respect to the tip shape are discussed, as well as the corrections which have to be applied when measuring by STM nanotube diameters in the ranges of 10 nm and of 1 nm, respectively. The behavior of a nanotube crossing steps on the graphite surface is analyzed. Modified height values measured on a single-wall nanotube in regions where it was subjected to strong mechanical stresses indicate changes in the electrical conductivity by several orders of magnitude. Carbon nanotubes are found to be good candidates to be used for STM tip shape characterization in the nm range.
langue originaleAnglais
Pages (de - à)12490-12498
Nombre de pages9
journalPhysical Review B - Condensed Matter and Materials Physics
Volume56
Numéro de publication19
étatPublié - 15 nov. 1997

Empreinte digitale

Acetylene
Carbon Nanotubes
Scanning tunneling microscopy
acetylene
Nanotubes
scanning tunneling microscopy
Carbon nanotubes
nanotubes
Microscopes
carbon nanotubes
microscopes
Decomposition
Scanning
decomposition
scanning
Graphite
Deconvolution
Transition metals
Image processing
graphite

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title = "Scanning tunneling microscope investigation of carbon nanotubes produced by catalytic decomposition of acetylene",
abstract = "A detailed scanning tunneling microscopy (STM) study of carbon nanotubes prepared by catalytic decomposition of acetylene over a supported transition metal catalyst is reported. Nanotubes with diameters in the 10-nm range and others with diameters as small as 1 nm were found. The mechanism of STM image formation and image deconvolution with respect to the tip shape are discussed, as well as the corrections which have to be applied when measuring by STM nanotube diameters in the ranges of 10 nm and of 1 nm, respectively. The behavior of a nanotube crossing steps on the graphite surface is analyzed. Modified height values measured on a single-wall nanotube in regions where it was subjected to strong mechanical stresses indicate changes in the electrical conductivity by several orders of magnitude. Carbon nanotubes are found to be good candidates to be used for STM tip shape characterization in the nm range.",
author = "L.P. Bir{\'o} and S. Lazarescu and Philippe Lambin and P.A. Thiry and A. Fonseca and J.B. Nagy and A.A. Lucas",
note = "Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.",
year = "1997",
month = "11",
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pages = "12490--12498",
journal = "Physical Review B - Condensed Matter and Materials Physics",
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T1 - Scanning tunneling microscope investigation of carbon nanotubes produced by catalytic decomposition of acetylene

AU - Biró, L.P.

AU - Lazarescu, S.

AU - Lambin, Philippe

AU - Thiry, P.A.

AU - Fonseca, A.

AU - Nagy, J.B.

AU - Lucas, A.A.

N1 - Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.

PY - 1997/11/15

Y1 - 1997/11/15

N2 - A detailed scanning tunneling microscopy (STM) study of carbon nanotubes prepared by catalytic decomposition of acetylene over a supported transition metal catalyst is reported. Nanotubes with diameters in the 10-nm range and others with diameters as small as 1 nm were found. The mechanism of STM image formation and image deconvolution with respect to the tip shape are discussed, as well as the corrections which have to be applied when measuring by STM nanotube diameters in the ranges of 10 nm and of 1 nm, respectively. The behavior of a nanotube crossing steps on the graphite surface is analyzed. Modified height values measured on a single-wall nanotube in regions where it was subjected to strong mechanical stresses indicate changes in the electrical conductivity by several orders of magnitude. Carbon nanotubes are found to be good candidates to be used for STM tip shape characterization in the nm range.

AB - A detailed scanning tunneling microscopy (STM) study of carbon nanotubes prepared by catalytic decomposition of acetylene over a supported transition metal catalyst is reported. Nanotubes with diameters in the 10-nm range and others with diameters as small as 1 nm were found. The mechanism of STM image formation and image deconvolution with respect to the tip shape are discussed, as well as the corrections which have to be applied when measuring by STM nanotube diameters in the ranges of 10 nm and of 1 nm, respectively. The behavior of a nanotube crossing steps on the graphite surface is analyzed. Modified height values measured on a single-wall nanotube in regions where it was subjected to strong mechanical stresses indicate changes in the electrical conductivity by several orders of magnitude. Carbon nanotubes are found to be good candidates to be used for STM tip shape characterization in the nm range.

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