Reduction in thermal conductivity and tunable heat capacity of inorganic/organic hybrid superlattices

Homogeneous Thermal Cloak with Constant Conductivity and Tunable Heat Localization

Invisible cloak has long captivated the popular conjecture and attracted intensive research in various communities of wave dynamics, e.g., optics, electromagnetics, acoustics, etc. However, their inhomogeneous and extreme parameters imposed by transformation-optic method will usually require challenging realization with metamaterials, resulting in narrow bandwidth, loss, polarization-dependence...

THERMAL CONDUCTIVITY OF InAs/AlSb SUPERLATTICES

In this work, we present experimental studies on the cross-plane thermal conductivity of InAs/AlSb superlattices. The thermal conductivities of MBE grown InAs/AlSb superlattices are measured using the 3ω method from 80-300 K. The influence of the growth temperature and post annealing is investigated. Significant reductions in thermal conductivity are observed in these superlattices compared to ...

Reduction of lattice thermal conductivity in one-dimensional quantum-dot superlattices due to phonon filtering

One dimensional quantum-dot superlattices (1D-QDSLs) consisting of acoustically mismatched materials are demonstrated theoretically to possess sub-1 W m−1 K−1 thermal conductivity in the 50–400 K range of temperatures. We consider coherent Si/Ge 1D-QDSLs, as well as model Si/plastic, Si/SiO2 and Si/SiC 1D-QDSLs. The phonon energy spectra and group velocities are obtained in the framework of the...

Thermal conductivity of skutterudite thin films and superlattices

Experimental results on the temperature-dependent cross-plane thermal conductivity of skutterudite thin films are presented. The films examined include IrSb3, CoSb3, and Ir0.5Co0.5Sb3 single layers, and IrSb3 /CoSb3 superlattices that are grown by pulsed-laser deposition. A differential 3v method is used to measure the cross-plane thermal conductivity of these films from 80 to 300 K. The experi...

Kapitza resistance and the thermal conductivity of amorphous superlattices