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Thermal transport properties of rolled graphene nanoribbons
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) The structure change from a GNR to a CNT. The thermal transport direction, along the -axis, is perpendicular to the curvature direction. The curvature angle is the central angle subtended by the circular arc for a RGNR. (b) The schematic structures of a RGNR, where the center transport region(C) is connected to left (L) and right (R) semi-infinite thermal leads.

Image of FIG. 2.
FIG. 2.

The thermal conductance versus the curvature angle for the 16-ZGNR and the 28-AGNR at 300 K. The inset shows the enlarged figure for from 330 to 360.

Image of FIG. 3.
FIG. 3.

The phonon transmission function versus phonon frequency () for GNRs and their rolled structures. (a) a 16-ZGNR, a 16-ZRGNR ( = 353), and a (8, 8) CNT; (b) a 28-AGNR, a 28-ARGNR ( = 353), and a (14, 0) CNT.

Image of FIG. 4.
FIG. 4.

The scaled thermal conductance () versus the width for (a) ZGNRs, (b) AGNRs and their corresponding rolled structures at 300 K. The size, , is taken as the perimeter of CNTs for both GNRs and RGNRs.  = , where , the thickness of ribbon layer or tube wall, is taken as 0.335 nm.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Thermal transport properties of rolled graphene nanoribbons