Phonon assisted thermophoretic motion of gold nanoparticles inside carbon nanotubes
Abstract
The authors investigate the thermally driven mass transport of gold nanoparticles confined inside carbon nanotubes using molecular dynamics simulations. The observed thermophoretic motion of the gold nanoparticles correlates with the phonon dispersion exhibited by a standard carbon nanotube and, in particular, with the breathing mode of the tube. Additionally, the results show an increased static friction for gold nanoparticles confines inside a zig-zag carbon nanotube when increasing the size (length) of the nanoparticles. However, an unexpected, opposite trend is observed for the same nanoparticles inside armchair tubes.
- Publication:
-
Applied Physics Letters
- Pub Date:
- June 2007
- DOI:
- 10.1063/1.2748367
- Bibcode:
- 2007ApPhL..90y3116S
- Keywords:
-
- 63.20.Dj;
- 63.22.+m;
- 81.40.Pq;
- 02.70.Ns;
- Phonon states and bands normal modes and phonon dispersion;
- Phonons or vibrational states in low-dimensional structures and nanoscale materials;
- Friction lubrication and wear;
- Molecular dynamics and particle methods