Document Detail


Investigating the diameter-dependent stability of single-walled carbon nanotubes.
MedLine Citation:
PMID:  19462964     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
We investigate the long-standing question of whether electrons accelerated at 80 kV are below the knock-on damage threshold for single-walled carbon nanotubes (SWNTs). Aberration-corrected high-resolution transmission electron microscopy is used to directly image the atomic structure of the SWNTs and provides in situ monitoring of the structural modification induced by electron beam irradiation at 80 kV. We find that SWNTs with small diameters of 1 nm are damaged by the electron beam, and defects are produced in the side walls that can lead to their destruction. SWNTs with diameters of 1.3 nm and larger are more stable against degradation, and stability increases with diameter. The effect of diameter, defects, and exterior contamination on the inherent stability of SWNTs under electron beam irradiation is investigated.
Authors:
Jamie H Warner; Franziska Schäffel; Guofang Zhong; Mark H Rümmeli; Bernd Büchner; John Robertson; G Andrew D Briggs
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  ACS nano     Volume:  3     ISSN:  1936-086X     ISO Abbreviation:  -     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-06-23     Completed Date:  2009-09-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101313589     Medline TA:  ACS Nano     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1557-63     Citation Subset:  -    
Affiliation:
Department of Materials, University of Oxford, Parks Road, Oxford, United Kingdom. jamie.warner@materials.ox.ac.uk
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