Thermal rectification in asymmetric graphene ribbons

By Nuo Yang, Gang Zhang, Baowen Li. 2009

330 citations recorded by the source corpus.

In this paper, heat flux in graphene nanoribbons has been studied by using molecular dynamics simulations. It is found that the heat flux runs preferentially along the direction of decreasing width, which demonstrates significant thermal rectification effect in the asymmetric graphene ribbons. The dependence of rectification ratio on the vertex angle and the length are also discussed. Compared to the carbon nanotube based one-dimensional thermal rectifier, graphene nanoribbons have much higher rectification ratio even in large scale. Our results demonstrate that asymmetric graphene ribbon might be a promising structure for practical thermal (phononics) device.

Subfields: Civil and Structural Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/71ed9c6f1eea527e6ed2cee48b5a815e236ca1cf

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Civil and Structural Engineering

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

In Materials Chemistry

1. Gang Zhang
2. Yong‐Wei Zhang
3. Baowen Li
4. Nianbei Li
5. Lei Wang
6. P. Hänggi
7. Jie Ren
8. A. Dhar

Citations in the corpus

• A review of thermal rectification observations and models in solid materials (2011, unknown): “[48] Graphene Asymmetric ribbons 0.”
• Colloquium : Phononics: Manipulating heat flow with electronic analogs and beyond (2011, background): “For instance, Yang et al. (2009) have demonstrated tunable thermal conduction in GNRs.”
• Phonon hydrodynamics and its applications in nanoscale heat transport (2015, unknown): “The usual mechanisms responsible for nanoscale thermal rectification include: nonlinear (anharmonic) lattice chain [297,298], asymmetric nanostructures (such as the graphene [299,300] and silicon [301] ribbons with variable widths, the carbon nano-cone [302]), surface roughness at contacts and inter”
• Strain effects on thermoelectric properties of two-dimensional materials (2015, result): “Due to the asymmetric mass distribution, there exists a thermal rectification in this graphene junction, which is consistent with precious studies [124, 125].”