Intrinsic anisotropy of thermal conductance in graphene nanoribbons
By Yong Xu, Xiaobin Chen, B. Gu, Wenhui Duan. 2009
171 citations recorded by the source corpus.
Thermal conductance of graphene nanoribbons (GNRs) with the width varying from 0.5 to 35 nm is systematically investigated using nonequilibrium Green’s function method. Anisotropic thermal conductance is observed with the room temperature thermal conductance of zigzag GNRs up to ∼30% larger than that of armchair GNRs. At room temperature, the anisotropy is found to disappear when the width is larger than 100 nm. This intrinsic anisotropy originate from different boundary condition at ribbon edges, and can be used to tune thermal conductance, which have important implications for the applications of GNRs in nanoelectronics and thermoelectricity.
Subfields: Civil and Structural Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/a9754a7981580ffd1e261acd69e26c354ef8d593
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In Civil and Structural Engineering
In Materials Chemistry
Citations in the corpus
- Colloquium: Phononic thermal properties of two-dimensional materials (2017, background): “There were also explanations from the viewpoint of phonon confinement (Xu et al., 2009; Tan, Wang, and Gan, 2011; Ye et al., 2015) and localization (Wang, Qiu, and Ruan, 2012).”
- Strain effects on thermoelectric properties of two-dimensional materials (2015, background): “the length [94-96], width [97, 98], edge roughness [99], topological symmetry [100] and”
- Lattice vibrational modes and phonon thermal conductivity of monolayer MoS2 (2013, background): “[64]) with the same width, the 100-fold reduction of κ in MoS2 arises from the much shorter MFP in MoS2 compared with graphene.”