carbon nanotubes; transmission electron microscopy (TEM); image analysis
Abstract :
[en] An original image analysis method is presented to characterize multi-walled carbon nanotubes from transmission electron microscopy images. The analysis is performed in three steps: (i) image preprocessing in order to isolate the nanotubes from the background, (ii) image segmentation, aiming at keeping only the measurable sections of nanotubes, and finally (iii) tube characteristics measurement. The measurement is based on a Lambert-like electron absorption law and is performed on the original gray level image itself. Two geometrical and one physical characteristics are determined for each tube, namely, its outer and inner radius and a linear electron absorption coefficient. The method is illustrated by comparing a pristine and an annealed carbon nanotube samples. The compaction of the tube walls during annealing is shown to result from a lowering of the external radius while the inner radius is left unchanged. (C) 2003 Elsevier Ltd. All rights reserved.
Disciplines :
Materials science & engineering Chemistry Physics
Author, co-author :
Gommes, Cédric ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique
Blacher, Silvia ; Université de Liège - ULiège > Département des sciences cliniques > Labo de biologie des tumeurs et du développement
Masenelli-Varlot, Karine; INSA de Lyon > UMR CNRS 5510 > Groupe d’ Etudes de Métallurgie Physique et de Physique des Matériaux
Bossuot, Charles; Nanocyl SA
McRae, Edward
Fonseca, Antonio; Facultés Universitaires Notre Dame de la Paix - Namur
Nagy, Janos B.; Facultés Universitaires Notre Dame de la Paix - Namur
Pirard, Jean-Paul ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique
Language :
English
Title :
Image analysis characterization of multi-walled carbon nanotubes
Publication date :
2003
Journal title :
Carbon
ISSN :
0008-6223
eISSN :
1873-3891
Publisher :
Pergamon-Elsevier Science Ltd, Oxford, United Kingdom
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