Response of a single-walled zigzag carbon nanotube to axial tension

Ebrahimi, Ali and Mohammadi, Marzie (2008) Response of a single-walled zigzag carbon nanotube to axial tension. In: 11th Iranian Physical Chemistry Seminar-July 2008, July 2008, Ardabil, Iran.

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Abstract

Along with more than one decade researches and investigations on carbon nanotubes (CNTs), now it becomes obvious that these materials possess extra ordinary physical properties. Mechanical properties of CNTs are so interesting because they have exceptional Young modules which are greater than any known material [1] and combine high stiffness with resilience and ability to buckle and collapse in a reversible manner[2]. Structures of carbon nanotubes (CNTs) can be specified uniquely with a chiral vector C = na1 + ma2 defined relative to the two-dimensional graphene sheet [3], where a1 and a2 are the graphene lattice vectors and n and m are integers. They have been classified roughly into three types: armchair, zigzag and chiral structures. Calculations of electronic band structures of singlewalled nanotubes (SWNTs)[4] predict that SWNTs can be either metallic or semiconducting depending on the chiral vector. Armchair-type CNTs should always be metallic, while zigzag- and chiral-type CNTs should alternate between metallic and semiconducting states as a function of the chiral vector. It has also been shown that the band gaps of semiconducting nanotubes decrease with increasing diameter [5]. Tensile behavior of CNTs has been the subject of several studies [6]. It was found out from simulation that CNTs can sustain large strains before any failure (in the range of 20%–30%) [7].

Item Type: Conference or Workshop Item (Paper)
Persian Title: Response of a single-walled zigzag carbon nanotube to axial tension
Persian Abstract: -
Subjects: Divisions > Conferences > 11th Iranian Physical Chemistry Seminar- July 2008
Conferences > 11th Iranian Physical Chemistry Seminar- July 2008
Divisions: Conferences > 11th Iranian Physical Chemistry Seminar- July 2008
Subjects > Conferences > 11th Iranian Physical Chemistry Seminar- July 2008
Date Deposited: 17 Jun 2019 05:35
Last Modified: 17 Jun 2019 05:35
URI: http://repository.uma.ac.ir/id/eprint/6822

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