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Title: Non uniform shrinkages of double-walled carbon nanotube as induced by electron beam irradiation

Electron beam-induced nanoinstabilities of pristine double-walled carbon nanotubes (DWCNTs) of two different configurations, one fixed at both ends and another fixed at only one end, were in-situ investigated in transmission electron microscope at room temperature. It was observed that the DWCNT fixed at both ends shrank in its diameter uniformly. Meanwhile, the DWCNT fixed at only one end intriguingly shrank preferentially from its free cap end along its axial direction whereas its diameter shrinkage was offset. A mechanism of “diffusion” along with “evaporation” at room temperature which is driven by the nanocurvature of the DWCNTs, and the athermal activation induced by the electron beam was proposed to elucidate the observed phenomena. The effect of the interlayer interaction of the DWCNTs was also discussed.
Authors:
;  [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [4] ;  [2]
  1. China-Australia Joint Laboratory for Functional Nanomaterials and Physics Department, Xiamen University, Xiamen 361005 (China)
  2. (Australia)
  3. (China)
  4. ARC Centre of Excellence for Functional Nanomaterials, University of Queensland, St Lucia, Brisbane, Queensland 4072 (Australia)
Publication Date:
OSTI Identifier:
22311033
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON NANOTUBES; CONFIGURATION; DIFFUSION; ELECTRON BEAMS; INTERACTIONS; IRRADIATION; SHRINKAGE; TEMPERATURE RANGE 0273-0400 K; TRANSMISSION ELECTRON MICROSCOPY