Extended Data Fig. 2: Spatiotemporal results from a second device.
From: Observation of giant and tunable thermal diffusivity of a Dirac fluid at room temperature
a, Asymmetric spatiotemporal ∆ITE maps for three different gate voltages. b, Extracted width as a function of ∆t. A lower Fermi level leads to a higher time-zero width, in accordance with hydrodynamic transport, as presented for the main device in the manuscript. (c) ∆ITE maps, taken at ∆t = 0, as a function of beam offset (∆x, ∆y), as well as sample height (z). (d) extracted line profiles for the two dimensions. e, Resulting signal width σ2 for both dimensions as extracted from Gaussian fits at each z-position. The same measurements are presented in Supplementary Fig. 4 for the main device. These experiments were performed with two beams of wavelength 443 nm and 886 nm, respectively.
