Carbon nanotube caps as springs: Molecular dynamics simulations

Authors
Citation
N. Yao et V. Lordi, Carbon nanotube caps as springs: Molecular dynamics simulations, PHYS REV B, 58(19), 1998, pp. 12649-12651
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
58
Issue
19
Year of publication
1998
Pages
12649 - 12651
Database
ISI
SICI code
0163-1829(19981115)58:19<12649:CNCASM>2.0.ZU;2-8
Abstract
We present a detailed investigation of the spring behavior of carbon nanotu be caps. We show that the caps act as harmonic springs, responding linearly to axial forces for appreciable displacements. Interestingly, we find the spring constant to be essentially independent of diameter and number of lay ers, but the maximum harmonic displacement increases with tube diameter and especially with number of layers. This spring effect is significant when t he tubes are sufficiently short so that buckling does not occur before cap compression. [S0163-1829(98)05340-5].