Prediction of chirality- and size-dependent elastic properties of single-walled carbon nanotubes via a molecular mechanics model

2006 ◽  
Vol 462 (2072) ◽  
pp. 2523-2540 ◽  
Author(s):  
Tienchong Chang ◽  
Jingyan Geng ◽  
Xingming Guo
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Molecular Mechanics ◽  
Elastic Properties ◽  
Continuum Mechanics ◽  
Governing Equations ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Mechanics Model ◽  
Molecular Mechanics Model

Molecular mechanics has been widely used to analytically study mechanical behaviour of carbon nanotubes. However, explicit expressions for elastic properties of carbon nanotubes are so far confined to some special cases due to the lack of fully constructed governing equations for the molecular mechanics model. In this paper, governing equations for an analytical molecular mechanics model are fully established. The explicit expressions for five in-plane elastic properties of a chiral single-walled carbon nanotube are derived, which make properties at different length-scales directly connected. The effects of tube chirality and tube diameter are investigated. In particular, the present results show that the classic relationship from the isotropic elastic theory of continuum mechanics between Young's modulus and shear modulus of a single-walled carbon nanotube is not retained. The present analytical results are helpful to the understanding of elastic properties of carbon nanotubes, and also useful to the topic of linking molecular mechanics with continuum mechanics.

The impact of the Marangoni convection and magnetic field versus blood-based carbon nanotube nanofluids

2019 ◽  
Vol 234 (1-2) ◽  
pp. 37-46
Author(s):  
Taza Gul ◽  
Ramla Akbar ◽  
Zafar Zaheer ◽  
Iraj S Amiri
Keyword(s):  
Magnetic Field ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Marangoni Convection ◽  
Thin Liquid Film ◽  
Casson Fluid ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
The Impact

The mutual result of the magnetic field and Marangoni convection against the thin liquid film of Casson fluid, blood-based carbon nanotube nanofluid has been fruitfully discussed in this article. The influence of various model constraints is focused on velocity, heat transfer, pressure distribution, skin friction and Nusselt number through graphical illustration. In addition, we witness that the thermal field of liquid raises with the growing value of [Formula: see text] and this upsurge is more in single-walled carbon nanotubes and is more dominant than multi-walled carbon nanotubes. The controlling approach of the homotopy analysis method has been used for velocity and temperature distribution. For authentication, the achieved results have been associated with the numerical (ND-Solve) method and displayed. This investigation shows that the velocity profile in the case of Casson fluid single-walled carbon nanotube–blood nanofluid is comparatively less affected and the temperature field of single-walled carbon nanotube–blood nanofluid dominates multi-walled carbon nanotube–blood nanofluid.

Probing molecular basis of single-walled carbon nanotube degradation and nondegradation by enzymes based on manganese peroxidase and lignin peroxidase

RSC Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3592-3599 ◽  
Author(s):  
Ming Chen ◽  
Xiaosheng Qin ◽  
Jian Li ◽  
Guangming Zeng
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Adverse Effects ◽  
Human Health ◽  
Lignin Peroxidase ◽  
Manganese Peroxidase ◽  
Molecular Basis ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon

Increasing evidence has shown that carbon nanotubes (CNTs) present adverse effects on the environment and human health, which stresses the importance of exploring CNT biodegradation.

Dependence of the Elastic Properties of a Single-Walled Carbon Nanotube on its Chirality

2018 ◽  
Vol 284 ◽  
pp. 20-24
Author(s):  
E.S. Sergeeva
Keyword(s):  
Carbon Nanotube ◽  
Elastic Properties ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Extreme Loads ◽  
Structure Sensitive ◽  
Different Types ◽  
Walled Carbon Nanotubes ◽  
Elastic Characteristics

Currently, composite materials composed of a matrix and reinforcing components are widely used as a structural material for various engineering devices designed to operate under extreme loads of different types. By modifying a composite with structure-sensitive inclusions, such as a single-wall carbon nanotube, the mechanical properties, especially elastic characteristics, of the resulting material can be significantly improved. The results of investigation of a single-walled carbon nanotubes chirality influence on its elastic properties are presented. Various configurations of nanotubes, such as zigzag and armchair are considered. The dependences of the nanotube bulk modulus and shear modulus of its diameter are shown.

Sign in / Sign up

Export Citation Format

Share Document