Irradiation of carbon nanotubes with carbon projectiles: A molecular dynamics study

Wiley - Tập 10 Số 4 - Trang 693-696 - 2013
Cristian D. Denton1, Santiago Heredia‐Avalos2,3, Juan Carlos Moreno‐Marín2
1Departamento de Física Aplicada, Universidad de Alicante, 03080 Alicante, Spain
2Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Universidad de Alicante, 03080 Alicante, Spain
3Phone: +34 965 903 400,

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AbstractThe irradiation of carbon based nanostructures with ions and electrons has been shown to be an appropriate tool to tailor their properties. The defects induced in the nanostructures during irradiation are able to modify their mechanical and electronic properties. Here we simulate the irradiation of carbon nanotubes with carbon ions using a molecular dynamics code. We use the Tersoff potential joined smoothly to the Universal Ziegler‐Biersack‐Littmark potential at short distances. We study the number of defects produced after irradiation with a single carbon ion finding a saturation with its energy at ∼ 3 keV. We observe, after continuum irradiation with low energy ions, the formation of bumps in the irradiated region. For larger energy ions we find that the diameter of the nanotube shrinks as shown in previous works. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Wiley

Tập 10 Số 4

693-696

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