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Structure of ordered coaxial and scroll nanotubes: general approach
Author(s) -
Khalitov Zufar,
Khadiev Azat,
Valeeva Diana,
Pashin Dmitry
Publication year - 2016
Publication title -
acta crystallographica section a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.742
H-Index - 83
ISSN - 2053-2733
DOI - 10.1107/s2053273315019440
Subject(s) - scroll , coaxial , nanotube , materials science , radius , chirality (physics) , spiral (railway) , oblique case , monoclinic crystal system , nanotechnology , crystallography , physics , chemistry , crystal structure , mathematics , carbon nanotube , mathematical analysis , mechanical engineering , philosophy , computer security , linguistics , chiral symmetry breaking , computer science , engineering , quark , quantum mechanics , nambu–jona lasinio model
The explicit formulas for atomic coordinates of multiwalled coaxial and cylindrical scroll nanotubes with ordered structure are developed on the basis of a common oblique lattice. According to this approach, a nanotube is formed by transfer of its bulk analogue structure onto a cylindrical surface (with a circular or spiral cross section) and the chirality indexes of the tube are expressed in the number of unit cells. The monoclinic polytypic modifications of ordered coaxial and scroll nanotubes are also discussed and geometrical conditions of their formation are analysed. It is shown that tube radii of ordered multiwalled coaxial nanotubes are multiples of the layer thickness, and the initial turn radius of the orthogonal scroll nanotube is a multiple of the same parameter or its half.