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.
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Theoretical and Experimental Techniques
Analytical Modeling
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.
Numerical Modeling
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.
Infrared Radiometry
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.
Transient Grating
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.
Groups News
Latest Publications
Thermal diode based on two phase-change materials
Rectification factor optimization
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.
Polariton Thermal Conductivity of SiN membranes
Experimental observation
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.
Then-fold Thermal Conductance Enhancement
Surface Phonon-Polaritons
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.
108
Papers7
Members4
PhD Graduates12
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