Nanoparticle traffic on helical tracks: thermophoretic mass transport through carbon nanotubes.

  title={Nanoparticle traffic on helical tracks: thermophoretic mass transport through carbon nanotubes.},
  author={Philipp A. E. Schoen and Jens Honor{\'e} Walther and S. Arcidiacono and Dimos Poulikakos and Petros Koumoutsakos},
  journal={Nano letters},
  volume={6 9},
Using molecular dynamics simulations, we demonstrate and quantify thermophoretic motion of solid gold nanoparticles inside carbon nanotubes subject to wall temperature gradients ranging from 0.4 to 25 K/nm. For temperature gradients below 1 K/nm, we find that the particles move "on tracks" in a predictable fashion as they follow unique helical orbits depending on the geometry of the carbon nanotubes. These findings markedly advance our knowledge of mass transport mechanisms relevant to… Expand
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