Journal article
Selective cap opening in carbon nanotubes driven by laser-induced coherent phonons.



Publication Details
Authors:
Dumitrică, T.; Garcia, M.; Jeschke, H.; Yakobson, B.
Publication year:
2004
Journal:
Physical Review Letters
Pages range:
117401
Journal acronym:
PRL
Volume number:
92
Issue number:
11
ISSN:
0031-9007
eISSN:
1079-7114

Abstract
We demonstrate the possibility of a selective nonequilibrium cap opening of carbon nanotubes as a response to femtosecond laser excitation. By performing molecular dynamics simulations based on a microscopic electronic model we show that the laser-induced ultrafast structural changes differ dramatically from the thermally induced dimer emission. Ultrafast bond weakening and simultaneous excitation of two coherent phonon modes of different frequencies, localized in the spherical caps and cylindrical nanotube body, are responsible for the selective cap opening.


Authors/Editors

Last updated on 2019-01-03 at 11:11