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Rotational dynamics and friction in double-walled carbon nanotubes | | J. Servantie
; P. Gaspard
; | | Rating: | Visitors: 5/5 (1 visitor) | | Date: |
9 Jun 2006 | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Materials Science | | Abstract: | We report a study of the rotational dynamics in double-walled nanotubes using molecular dynamics simulations and a simple analytical model reproducing very well the observations. We show that the dynamic friction is linear in the angular velocity for a wide range of values. The molecular dynamics simulations show that for large enough systems the relaxation time takes a constant value depending only on the interlayer spacing and temperature. Moreover, the friction force increases linearly with contact area, and the relaxation time decreases with the temperature with a power law of exponent $-1.53 pm 0.04$. | | Source: | arXiv, cond-mat/0606234 | | Other source: | [GID 624182] pmid17155560 | | Services: | Forum | Review | PDF | Favorites | |
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