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Thermoelectric properties of aligned carbon nanotubes
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) FE-SEM image of aligned wrapped -type SWCNT. (b) The statistics of aligned tubes based on accumulated data. (c) line of the polarized Raman spectra. The inset exhibits the ratio between the peak and background for this aligned -type SWCNT based film.

Image of FIG. 2.
FIG. 2.

(a) Thermoelectricity developed in the -type SWCNT samples. Each of the curves contains two branches representing up and down temperature rampings. The insets show how the current was drawn. Note the difference in film resistance when measured in parallel and across the tubes’ axis. (b) Randomly distributed -type film.

Image of FIG. 3.
FIG. 3.

TE curves for randomly oriented MWCNT junctions laid side by side with a small overlapping zone. Both up (black curve) and down (brown curve) temperature scans are shown. Inset: the corresponding curve.

Image of FIG. 4.
FIG. 4.

TE properties of the SWCNT, -type, and junctions: randomly dispersed and aligned samples are shown. Indicated are the overall resistance values. Both up (black curve) and down (brown curve) temperature scans are shown. Overall resistance between various samples could have varied because of film thickness and size difference in their overlapping zones.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Thermoelectric properties of aligned carbon nanotubes