Read e-book online A Primer on the Geometry of Carbon Nanotubes and Their PDF

By Sadegh Imani Yengejeh, Seyedeh Alieh Kazemi, Andreas Öchsner

This quantity offers a complete method for categorizing carbon nanotubes and their changes when it comes to nano sheets, nanotubes, microscopic and atomic changes. additionally, the cloth and geometric houses of those nano-configurations are addressed. finally, it introduces a couple of universal software program applications for geometry new release and a number of other advertisement finite point programs.

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For instance, a hetero-junction CNT created by connecting a (7,7)-armchair CNT and a (9,9)-armchair CNT is referred to as a (7,7)-(9,9) hetero-junction CNT [50]. e. large angle, small angle and straight connections. e. if the constituent CNTs of a hetero-junction are © The Author(s) 2015 S. 1 Some examples of macroscopic and atomic modifications in the same type (either armchair, zigzag and chiral), the configuration of the hetero-junction is sorted as a straight model and the homogeneous CNTs will be connected with parallel longitudinal axis.

These nanoparticles occur on the surface of natural graphite. Nanocones are distinguished based on their disclination angle dθ which is defined as the angle of the sector removed from a flat sheet to form a cone. 1. 2. The apex angles of nanocones that are made in this manner can also be given by 2 arcsin(1 − [dθ]/360), where dθ is the disclination angle in degrees. 9° [66]. © The Author(s) 2015 S. 2 Buckminsterfullerene Buckminsterfullerene (or Bucky-balls) is some kind of spherical-shaped fullerene molecule which has cage-like fused-ring configurations [67].

14, the structure is now composed of three branches, and the transition between three tubes demands a particular geometry which cannot be arbitrary. 11 Pentagon and heptagon pair defects of a (8,0)-(7,1) hetero-junction CNT Three joined tubes require at least six heptagons, which have to be placed adequately for each specific junction. Nevertheless, it is not possible in every situation to guess the placement of the heptagons, and this task becomes a mathematical puzzle which is quite hard to solve.

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