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The researchers have shown that the in-plane thermal conductivity of the graphene-based film, with 20 micrometre thickness, can reach a thermal conductivity value of 1600W/mK, which is four times that of copper.
"Increased thermal capacity could lead to several new applications for graphene," said Liu. "One example is the integration of graphene-based film into microelectronic devices and systems, such as highly efficient Light Emitting Diodes (LEDs), lasers and radio frequency components for cooling purposes. Graphene-based film could also pave the way for faster, smaller, more energy efficient, sustainable high power electronics."'