Deviation from the Fourier law in room-temperature heat pulse experiments
Deviation from the Fourier law in room-temperature heat pulse experiments
Abstract We report heat pulse experiments at room temperature that cannot be described by Fourier's law. The experimental data are modeled properly by the Guyer–Krumhansl equation, in its over-diffusion regime. The phenomenon may be due to conduction channels with differing conductivities and parallel to the direction of the heat flux.