Thermal rectification in carbon nanotube intramolecular junctions: Molecular dynamics calculations

By Gangshan Wu, Baowen Li. 2007

208 citations recorded by the source corpus.

We study heat conduction in $(n,0)∕(2n,0)$ intramolecular junctions by using molecular dynamics method. It is found that the heat conduction is asymmetric, namely, heat transports preferably in one direction. This phenomenon is also called thermal rectification. The rectification is weakly dependent on the detailed structure of connection part but is strongly dependent on the temperature gradient. We also study the effect of the tube radius and intramolecular junction length on the rectification. Our study shows that the tensile stress can increase rectification. The physical mechanism of the rectification is explained.

Subfields: Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/b61305e5ccee0fa34295a9a0ca006febe45e44ad

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In Materials Chemistry

1. Gang Zhang
2. D. Greg Walker
3. N. Roberts
4. Baowen Li
5. Nianbei Li
6. Lei Wang
7. P. Hänggi
8. Jie Ren

Citations in the corpus

• A review of thermal rectification observations and models in solid materials (2011, background): “In all cases the nanohorn exhibited a preferred direction of transport in the direction of decreasing radius (and also mass) which was similar to what has been seen in other nanotube and graphene studies [47,49,55,56].”
• Colloquium : Phononics: Manipulating heat flow with electronic analogs and beyond (2011, background): “Let us consider thermal rectification in single-walled carbon nanotube (SWCNT) based junctions (Wu and Li, 2007).”