We are currently working on the development of solid state phase-change materials, transmission of information via heat carriers (thermotronics), heat transport by surface electromagnetic waves (thermopolaritronics), thermal performance of particulate composites, dynamical radiative systems, non-linear heat conduction and nanoscale heat transport generated by the combined dynamics of electrons, phonons and photons.Read More
They are evanescent electromagnetic waves capable of carrying heat along the interface of polar nanomaterials (SiO2, SiC, SiN).Read More
A memory resistor characterized by a Lissajous curve between the heat flux and temperature difference periodically modulated in time, of its two terminals.Read More
Radiative Thermal Transistor
A three-terminal device capable of heating and cooling by capitalizing on the combined effect of the metal-insulator transition of VO2 and its thermal hysteresis.Read More
Thermal Wave Diode
A two-terminal device capable of switching on and off the heat current of thermal waves by capitalizing on the spatiotemporal modulation of the thermal conductivity and heat capacity.Read More
Quantum of Thermal Conductance
The thermal conductance per unit width of a sufficiently thin polar nanofilm supporting the propagation of surface-phonon polaritons is independent of the material properties and is given by 12z(3)k_B^3T^2/ch^2.Read More
We analytically solve the Boltzmann transport equation, Maxwell equations and non-linear heat conduction equation to describe the heat transport in different materials and systems.
We use finite elements methods (COMSOL) for numerically modeling multiphysics problems involving the heat transport driven by phonons, photons and electrons, under steady-state and dynamical conditions.
This spectroscopic technique is applied to measure the thermal difussivity and thermal conductivity of isotropic and anisotropic thin films. Laser beams with a Gaussian profile are used along with a heating stage.
We apply this technique to measure the in-plane thermal conductivity and in-plane thermal conductivity of nano films mainly, as functions of temperature, for temperatures higher than room one.
Suraju has published a paper on the optimization of the thermal rectification of plane, cylindrical and spherical radiative thermal diodes operating with terminals of two phase-change materials. 1 April 2020.
Jose has contributed to a paper on the enhancement of the in-plane thermal conductivity for thinner and/or hotter SiN membranes. 5 July 2020.
Jose has contributed to a paper reporting that the sandwich structure SiO2/Si/SiO2 enhances the polariton heat flux to values up to ten times higher than the corresponding one of a single SiO2 film. 15 July 2020.