Heat conduction in graphene: experimental study and theoretical interpretation

By Subhasis Ghosh, Denis L. Nika, E. P. Pokatilov, Alexander A. Balandin. 2009

224 citations recorded by the source corpus.

We review the results of our experimental investigation of heat conduction in suspended graphene and offer a theoretical interpretation of its extremely high thermal conductivity. The direct measurements of the thermal conductivity of graphene were performed using a non-contact optical technique and special calibration procedure with bulk graphite. The measured values were in the range of ∼3000–5300 W mK−1 near room temperature and depended on the lateral dimensions of graphene flakes. We explain the enhanced thermal conductivity of graphene as compared to that of bulk graphite basal planes by the two-dimensional nature of heat conduction in graphene over the whole range of phonon frequencies. Our calculations show that the intrinsic Umklapp-limited thermal conductivity of graphene grows with the increasing dimensions of graphene flakes and can exceed that of bulk graphite when the flake size is on the order of a few micrometers. The detailed theory, which includes the phonon-mode-dependent Gruneisen parameter and takes into account phonon scattering on graphene edges and point defects, gives numerical results that are in excellent agreement with the measurements for suspended graphene. Superior thermal properties of graphene are beneficial for all proposed graphene device applications.

Subfields: Civil and Structural Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/0fd914e0462b82d7ad51d62d6385bff4f655189d

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. Alexander A. Balandin
2. A. McGaughey
3. M. Kaviany

In Materials Chemistry

1. D. Papageorgiou
2. I. Kinloch
3. R. Young
4. Ahmed A Abdala
5. Xiangfan Xu
6. S. Lonkar
7. Y. Deshmukh
8. Johan Liu

Citations in the corpus

• Recent advances in chemical modifications of graphene (2015, methodology): “A non-contact Raman optothermal technique was the first experimental method used to measure the thermal conductivity of graphene [90].”
• Graphene/elastomer nanocomposites (2015, background): “found that the thermal conductivity of graphene exceeds 3000 W mK 1 near room temperature, therefore being higher than the bulk graphite limit [30,97,98].”
• Thermal properties of graphene and nanostructured carbon materials. (2011, methodology): “The first experimental studies [16-17, 73-74] of thermal conductivity of graphene were carried out at UC-Riverside (see details of the measurement procedures in Appendix I).”
• Graphene related materials for thermal management (2019, background): “More details of the technique can be found in a few dedicated reviews [19, 96, 295, 304].”