Fig. 3: Thermal conductivity of the graphite Tesla valve.
From: A graphite thermal Tesla valve driven by hydrodynamic phonon transport
a,b, Optical microscope images of the graphite Tesla valve in forward and reverse directions, respectively. Arrows indicate the directions of heat flows. Scale bars, 5 μm. c, Thermal conductivity of the graphite Tesla valve in forward (cyan triangles) and reverse (red triangles) directions. Error bars denote the standard deviations (σ) of κ values from 3 to 10 measurements for each structure (forward or reverse) at a given temperature.
