Quantum mechanics

Raman spectroscopy

Materials science

Graphene

Graphene nanoribbons

Thermal conductivity

Excitation

Physics

Nanotechnology

Carbon nanotube

Optics

Composite material

Thermal conduction

Nano Letters

We report the measurement of the thermal conductivity of a suspended single-layer graphene. The room temperature values of the thermal conductivity in the range approximately (4.84+/-0.44)x10(3) to (5.30+/-0.48)x10(3) W/mK were extracted for a single-layer graphene from the dependence of the Raman G peak frequency on the excitation laser power and independently measured G peak temperature coefficient. The extremely high value of the thermal conductivity suggests that graphene can outperform carbon nanotubes in heat conduction. The superb thermal conduction property of graphene is beneficial for the proposed electronic applications and establishes graphene as an excellent material for thermal management.

Superior Thermal Conductivity of Single-Layer Graphene