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Phonon assisted thermophoretic motion of gold nanoparticles inside carbon nanotubes
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color) Power DOS of a gold nanoparticle (blue) inside an artificial tube with (broken red line). The solid red line shows the artificial tube with . The model tube with imposed breathing mode is depicted as solid orange line. The DOS of a (30,0) zig-zag CNT is added as well (black). The radial breathing mode of a CNT with is denoted by . That of the artificial tube appears as Equilibrium temperature for all cases is . (Inset) The artificial tube .

Image of FIG. 2.
FIG. 2.

(Color) Lateral force response on the gold nanoparticle inside the (18,18) armchair (AC) and (30,0) zig-zag (ZZ) carbon nanotube. defines the dimensionless lengths of the nanoparticle. The arrows indicate increasing temperature differences along the CNT. (Inset) Radial force .

Image of FIG. 3.
FIG. 3.

(Color) Frictional forces on the (triangle) and (diamond) nanoparticles confined inside the armchair (red, filled symbols) and zig-zag (blue, open symbols) CNT versus drift velocity . The considered velocities correspond to values measured when driving these nanoparticles by temperature gradients between 0.4 and . Two-dimensional unfolded atomic structure of the first gold layer nanotube covering the unfolded graphene sheet of the a) armchair and (b) zig-zag CNTs. The red lines indicate the angle of alignment of the gold atoms and the black lines the zig-zag orientation of carbon atoms in the graphene layer: (a) 30° and 90° for the armchair and (b) 0° and 60° for the zig-zag.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Phonon assisted thermophoretic motion of gold nanoparticles inside carbon nanotubes