Mechanical and Electrical Response Models of Carbon Nanotubes
Mechanical and Electrical Response Models of Carbon Nanotubes
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- New search for: Theodosiou, T. C.
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Carbon nanotubes have remarkable mechanical and electrical properties. One promising feature is their electrical resistance that strongly depends on mechanical deformation. This, in combination with the fact that nanotubes can be dispersed into polymeric matrices, makes them ideal constituents for the development of novel multifunctional materials and devices. When dispersed into an insulating polymer, nanotubes are known to induce conductive behavior to the composite. This is attributed to the formation of conductive nanotube networks due to percolation. When a nanocomposite is mechanically deformed, load is transferred to the nanotubes, as well. As they deform and rearrange, their electrical properties change and the percolation networks are distorted. This effect is studied in this chapter using three models: (i) an atomistic molecular mechanics approach for prediction of the mechanical response of carbon nanotubes, (ii) a subatomic tight-binding approach for prediction of the piezeoresistive response of individual carbon nanotubes, and (iii) a homogenized microscale model for prediction of the piezoresistive response of carbon nanotube doped insulating polymers. Results seem to be in agreement with experimental results for small deformations.
Document information
Mechanical and Electrical Response Models of Carbon Nanotubes
Solid Mechanics, Applicat.
2012-08-01
48 pages
Article/Chapter (Book)
Electronic Resource
English
Carbon nanotubes , Molecular mechanics , Tight binding model , Piezoresistive response , Homogenization Engineering , Theoretical and Applied Mechanics , Nanotechnology , Ceramics, Glass, Composites, Natural Materials , Industrial Chemistry/Chemical Engineering , Industrial and Production Engineering
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