Structure and Elastic Modulii of Silicon Nanotubes |
| Journal |
Journal of Nano Research (Volume 2) |
| Volume |
Journal of Nano Research Vol. 2 |
| Edited by |
|
| Pages |
85-90 |
| DOI |
10.4028/www.scientific.net/JNanoR.2.85 |
| Online since |
August, 2008 |
| Authors |
Veena Verma,
Keya Dharamvir,
V.K. Jindal
|
| Keywords |
Poisson Ratio, Shear Modulus, Silicon Nanotube, Sp3 Hybridization, Square Lattice, Tersoff Potential, Young's Modulus |
| Abstract |
Based on the assumption that sp3 hybridization is more stable in bulk silicon, this study
is a step forward in understanding the structures and mechanical properties of silicon nanotubes
(SiNT). Using the well tested form of Tersoff potential we have calculated cohesive energy and
other parameters for SiNT of various diameters and chiralities. Using this potential, the results
obtained for bulk silicon are satisfactory, so we expect that the same potential would work well with
SiNT as well. We calculated Young’ modulus and shear modulus for SiNT. Young’s modulus lies
in the range of 100- 200 GPa which is about 10-20 times lower than CNT and shear modulus lies
between 200-300 GPa. This work shall motivate further theoretical and experimental work in the
field of nanostructures. |
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