Graphene Thermocouples: Single‐Material Graphene Thermocouples (Adv. Funct. Mater. 22/2020)

In article number 2000574, Achim Harzheim, Pascal Gehring, and co-workers report U-shaped graphene strips comprising one wide and one narrow leg that form a single material thermocouple due to the increased influence of electron edge scattering in a narrow channel. This leads to different Seebeck coefficients in the two legs, which for the devices tested, yield a maximum sensitivity of ΔS ≈ 39 μV K−1.