Figure 2: Device architecture and measurement configuration.
From: Direct electronic measurement of Peltier cooling and heating in graphene
(a) Schematic of the measurement geometry. A graphene flake (white) on a Si/SiO2 substrate is contacted with Au leads (yellow). NiCu leads (blue) form thermocouples to probe the temperature of the graphene–metal interface. We define the current as sent from contact 1 to 2 and probe the thermocouple at contacts 3 and 4. (b) Coloured electron micrograph of an actual device. Scale bar, 1 μm. The graphene flake is outlined in white for clarity.
