Negative thermal expansion coefficient of graphene measured by Raman spectroscopy.
By D. Yoon, Y. Son, H. Cheong. Nano letters (Print), 2011
1,024 citations recorded by the source corpus.
The thermal expansion coefficient (TEC) of single-layer graphene is estimated with temperature-dependent Raman spectroscopy in the temperature range between 200 and 400 K. It is found to be strongly dependent on temperature but remains negative in the whole temperature range with a room temperature value of (-8.0 ± 0.7) × 10(-6) K(-1). The strain caused by the TEC mismatch between graphene and the substrate plays a crucial role in determining the physical properties of graphene, and hence its effect must be accounted for in the interpretation of experimental data taken at cryogenic or elevated temperatures.
Subfields: Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/3bf084cfa525537357f457ef33e9b42b51400cb8
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In Materials Chemistry
- Francisco Guinea
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- Hector Ochoa
- M. Vozmediano
- R. Roldán
- Fernado de Juan
- Alberto Cortijo
- V. Parente
Citations in the corpus
- Tailoring the mechanical properties of 2D materials and heterostructures (2018, background): “Graphene exhibits a negative thermal coefficient [22] and lower in-plane stiffness [23] which can be related to this non-flat structure.”
- Enhanced tensile properties of aluminium matrix composites reinforced with graphene encapsulated SiC nanoparticles (2015, background): “7(b), due to its different behaviour and it will expand during cooling and solidification [49].”