TY - JOUR
T1 - The Defect Character of Carbon Nanotubes and Nanoparticles
AU - Dimitrakopulos, G. P.
AU - Dravid, V. P.
AU - Karakostas, T. H.
AU - Pond, R. C.
PY - 1997
Y1 - 1997
N2 - Circuit mapping is employed to study the defect content of buckytubes and carbon nanoparticles. The topological analysis enables the connection with the well established defect theory of crystalline materials. The complementarity between defect models of two- and three-dimensional structures is considered as well as the significance of dislocation descriptions of these materials. In accordance with recent experimental observations, the possibility of three-dimensional hexagonal graphitic stacking of atoms in these structures is examined through the introduction of appropriate defects that are admissible in graphite. Defects in graphene sheets introduce cap closure of isolated tubules and changes in tubule orientation, radius and helicity. In multilayered tubes, appropriate defects can accommodate curvature among adjacent sheets so that the . . . ABAB. . . stacking is preserved. However, the graphite stacking is generally destroyed in multilayered caps owing to the lack of appropriate graphite defects for their accommodation.
AB - Circuit mapping is employed to study the defect content of buckytubes and carbon nanoparticles. The topological analysis enables the connection with the well established defect theory of crystalline materials. The complementarity between defect models of two- and three-dimensional structures is considered as well as the significance of dislocation descriptions of these materials. In accordance with recent experimental observations, the possibility of three-dimensional hexagonal graphitic stacking of atoms in these structures is examined through the introduction of appropriate defects that are admissible in graphite. Defects in graphene sheets introduce cap closure of isolated tubules and changes in tubule orientation, radius and helicity. In multilayered tubes, appropriate defects can accommodate curvature among adjacent sheets so that the . . . ABAB. . . stacking is preserved. However, the graphite stacking is generally destroyed in multilayered caps owing to the lack of appropriate graphite defects for their accommodation.
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U2 - 10.1107/S0108767397000287
DO - 10.1107/S0108767397000287
M3 - Article
AN - SCOPUS:0007038518
SN - 0108-7673
VL - 53
SP - 341
EP - 351
JO - Acta Crystallographica Section A: Foundations of Crystallography
JF - Acta Crystallographica Section A: Foundations of Crystallography
IS - 3
ER -