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

By Sadegh Imani Yengejeh, Seyedeh Alieh Kazemi, Andreas Öchsner

ISBN-10: 3319149857

ISBN-13: 9783319149851

ISBN-10: 3319149865

ISBN-13: 9783319149868

This quantity offers a complete procedure for categorizing carbon nanotubes and their ameliorations by way of nano sheets, nanotubes, microscopic and atomic ameliorations. moreover, the fabric and geometric houses of those nano-configurations are addressed. finally, it introduces a few universal software program applications for geometry iteration and several other advertisement finite point programs.

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Extra info for A Primer on the Geometry of Carbon Nanotubes and Their Modifications

Example text

1 Doping This random imperfection corresponds to the case where a finite number of c­ arbon atoms were replaced by silicon, nitrogen, boron, etc. 21 for the silicon atom. 22. 23. Chapter 6 Degenerated Tubes Beside carbon nanotubes, there are some other configurations of nanostructures, such as nanocones, capped CNTs, fullerene molecules, etc. 1 Carbon Nanocone Structures These specific types of nanostructures were reported to possess a wide distribution of apex angles, which support a disclination model for cone-helix structures [64].

1. g. g. second moment of area) can be easily obtained from basic material tests and evaluated based on the given dimensions of the crosssectional area. Nevertheless, for the carbon-carbon bonds of CNTs, no classical tests or geometric derivations are available to describe the properties of the equivalent beam elements. Consequently, we assume the same values for the equivalent beam elements as in the approach proposed in [4, 20, 22]. These effective material and geometrical properties were obtained in the mentioned references based on a molecular mechanics approach where CNTs were regarded as a large molecule consisting of carbon atoms with atomic nuclei treated as material points.

This software is used for modeling different types of CNTs. CoNTub is a computer program for determining the coordinates of these nanostructures. e. the primary bonds between two nearestneighboring atoms) are calculated by this software. Some features of the first version of CoNTub are simulating SWCNTs and MWCNTs. The most highlighted feature of the second version of this software is to generate the models of threejunctioned CNTs. 1 displays a snapshot from CoNTub software. 2 Carbon/Boron Nitride Nanostructure Builder Plugin Using this plugin, models of carbon or boron nitride nanoparticles including single-wall nanotubes or graphene-like sheets can be simulated.

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A Primer on the Geometry of Carbon Nanotubes and Their Modifications by Sadegh Imani Yengejeh, Seyedeh Alieh Kazemi, Andreas Öchsner

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