High-temperature silicon thermal diode and switch
Kasprzak, Maciej (Adam Mickiewicz University. Faculty of Physics)
Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia)
Zaleski, Karol (Adam Mickiewicz University. NanoBioMedical Centre (Poland))
Iatsunskyi, Igor (Adam Mickiewicz University. NanoBioMedical Centre (Poland))
Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia)
Volz, Sebastian (University of Tokyo. Institute of Industrial Science)
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia)
Graczykowski, Bartlomiej (Max Planck Institute for Polymer Research)

Date:	2020
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.
Grants:	Agencia Estatal de Investigación SEV-2017-0706 Agencia Estatal de Investigación PGC2018-101743-B-I00
Note:	Altres ajuts: the ICN2 is funded by the CERCA programme/Generalitat de Catalunya.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Thermal rectification ; Thermal switch ; Raman thermometry ; Thermal diode ; High temperatures ; Thermoelectrics
Published in:	Nano Energy, Vol. 78 (Dec. 2020) , art. 105261, ISSN 2211-2855

DOI: 10.1016/j.nanoen.2020.105261

8 p, 2.0 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles