石墨烯导热研究进展

宋厚甫, 康飞宇

Recent Progress on Thermal Conduction of Graphene

Houfu Song, Feiyu Kang

图2 石墨烯热导率的尺寸效应56, 63

Fig 2 The impact of length and thickness on graphene thermal conductivity 56, 63. (a) Calculated thermal conductivity for few-layer graphene vs layer number N for N = 1–5 (black circles). Also shown are the per-branch contributions for ZA (red triangles), TA (green squares), and LA (blue diamonds) branches. The corresponding calculated graphite values are shown by the horizontal lines. (b) Calculated thermal conductivity for graphene (N = 1, solid black curve), bilayer graphene (N = 2, dashed red curve), and 4-layer graphene (N = 4, dotted blue curve) as a function of sample length L for T = 300 K. On this scale, the N = 3 and N= 5 curves cannot be distinguished from that for N = 4. Thermal conductivity of graphene as a function of (c) sample length and (d) thickness. Adapted with permission from Ref. 56, Copyright 2011, American Physical Society and Ref. 63, Copyright 2018, American Physical Society.