Significant decrease in thermal conductivity of multi-walled carbon nanotube induced by inter-wall van der Waals interactions

2016 ◽  
Vol 380 (21) ◽  
pp. 1861-1864 ◽  
Author(s):  
Xue Zhang ◽  
Wu-Xing Zhou ◽  
Xue-Kun Chen ◽  
Yue-Yang Liu ◽  
Ke-Qiu Chen
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotube ◽  
Van Der Waals ◽  
Van Der Waals Interactions ◽  
Multi Walled Carbon Nanotube

scholarly journals Mechanical Response of Carbon Nanotube Bundle to Lateral Compression

Computation ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 27 ◽  
Author(s):  
Dina U. Abdullina ◽  
Elena A. Korznikova ◽  
Volodymyr I. Dubinko ◽  
Denis V. Laptev ◽  
Alexey A. Kudreyko ◽  
...  
Keyword(s):  
Phase Transition ◽  
Carbon Nanotube ◽  
Order Phase Transition ◽  
Mechanical Response ◽  
Van Der Waals ◽  
Van Der Waals Interactions ◽  
Structure Evolution ◽  
Biaxial Compression ◽  
Chain Model ◽  
Bending Rigidity

Structure evolution and mechanical response of the carbon nanotube (CNT) bundle under lateral biaxial compression is investigated in plane strain conditions using the chain model. In this model, tensile and bending rigidity of CTN walls, and the van der Waals interactions between them are taken into account. Initially the bundle in cross section is a triangular lattice of circular zigzag CNTs. Under increasing strain control compression, several structure transformations are observed. Firstly, the second-order phase transition leads to the crystalline structure with doubled translational cell. Then the first-order phase transition takes place with the appearance of collapsed CNTs. Further compression results in increase of the fraction of collapsed CNTs at nearly constant compressive stress and eventually all CNTs collapse. It is found that the potential energy of the CNT bundle during deformation changes mainly due to bending of CNT walls, while the contribution from the walls tension-compression and from the van der Waals energies is considerably smaller.

Study of the thermal conductivity of a metal-coated multi-walled carbon nanotube using molecular dynamics atomistic simulations

MRS Advances ◽  
2019 ◽  
Vol 4 (08) ◽  
pp. 507-513 ◽  
Author(s):  
Dinesh Bommidi ◽  
Ravindra Sunil Dhumal ◽  
Iman Salehinia
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Molecular Dynamics ◽  
Carbon Nanotube ◽  
Phonon Scattering ◽  
Metal Coating ◽  
Atomistic Simulations ◽  
Multi Walled Carbon Nanotube

ABSTRACTThermal conductivity of a nickel-coated tri-wall carbon nanotube was studied using molecular dynamics where both the phonon and electron contributions were considered. Simulations predicted a significant effect of the metal coating on the thermal conductivity, i.e. 50% decrease for 1.2 nm of Ni coating. However, the decreasing rate of the thermal conductivity is minuscule for the metal thicker than 1.6 nm. The smaller thermal conductivity of the metal coating, phonon scattering at the interface, and less impacted heat transfer on the inner tubes of the carbon nanotube rationalized the observed trends.

Evaluation of Thermal Conductivity of a Multi-Walled Carbon Nanotube Using the ΔVgsMethod

2007 ◽  
Vol 46 (5A) ◽  
pp. 3139-3143 ◽  
Author(s):  
Hiroki Shioya ◽  
Taisuke Iwai ◽  
Daiyu Kondo ◽  
Mizuhisa Nihei ◽  
Yuji Awano
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotube ◽  
Multi Walled Carbon Nanotube

Improved thermal conductivity of epoxy composites using a hybrid multi-walled carbon nanotube/micro-SiC filler

Carbon ◽  
2010 ◽  
Vol 48 (4) ◽  
pp. 1171-1176 ◽  
Author(s):  
Tianle Zhou ◽  
Xin Wang ◽  
Xiaoheng Liu ◽  
Dangsheng Xiong
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotube ◽  
Epoxy Composites ◽  
Multi Walled Carbon Nanotube
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