Fig. 4: Diffusive and non-diffusive contributions to heat transport.
From: Controllable hydro-thermoelastic heat transport in ultrathin semiconductors at room temperature
a–c, Calculated temperature profiles at the end of a pump-on window from the transport equation for the diffusive (a), hydrodynamic (b) and hydro-thermoelastic (c) regimes, with the diffusive profile for comparison, together with arrows whose size reflects the strength and direction of the heat flux contribution according to the diffusive (brown arrows), hydrodynamic (blue arrows) and thermoelastic (purple arrows) terms. d, Calculation of the spatially dependent divergence of the displacement vector (normalized), which represents the normalized change in density due to strain during a pump-on window. The centre region is expanded, whereas the edge is compressed.
