@article{Kasprzak2020,
title = {High-temperature silicon thermal diode and switch},
author = {Maciej Kasprzak and Marianna Sledzinska and Karol Zaleski and Igor Iatsunskyi and Francesc Alzina and Sebastian Volz and Clivia M Sotomayor Torres and Bartłomiej Graczykowski},
doi = {10.1016/j.nanoen.2020.105261},
issn = {22112855},
year = {2020},
date = {2020-01-01},
journal = {Nano Energy},
volume = {78},
number = {July},
publisher = {Elsevier Ltd},
abstract = {A thermal rectifier/diode is a nonreciprocal element or system that enables preferential heat transport in one direction. In this work we demonstrate a single-material thermal diode operating at high temperatures. The diode is made of nanostructured silicon membranes exhibiting spatially and temperature-dependent thermal conductivity and, therefore, falling into the category of spatially asymmetric, nonlinear nonreciprocal systems. We used an all-optical state-of-the-art experimental technique to prove rectification along rigorous criteria of the phenomenon. Using sub-milliwatt power we achieve rectification of about 14%. In addition, we demonstrate air-triggered thermal switching and passive cooling. Our findings provide a CMOS-compatible platform for heat rectification and applications in energy harvesting, thermal insulation and cooling, as well as sensing and potentially thermal logic.},
keywords = {High temperatures, Raman thermometry, Thermal diode, Thermal rectification, Thermal switch, Thermoelectrics},
pubstate = {published},
tppubtype = {article}
}