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arXiv · 1910.13629

Broadband and wide-temperature-range thermal emitter with super-hydrophobicity based on oxidized high-entropy film

Ping Song·Cong Wang·Ying Sun·Angelique Bousquet·Eric Tomasella
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Abstract

This paper demonstrates broadband and wide-temperature-range thermal emitter with super-hydrophobicity based on an oxidized high-entropy film. The annealed (NiCuCrFeSi)O high-entropy film can serve as a mid-infrared emitter due to its three characteristics: i) High blackbody-like emission in a broadband mid-infrared region from 2.5 um to 20 um; ii) High emittance (more than 90%) in a wide temperature range from 300 K to 1000 K; iii) Super-hydrophobicity with high contact angle (CA) of 151 degree and low title angle (TA) of 5 degree. These characteristics originate from the recrystallization of as-deposited film and formation of cavernous structure with a plethora of nanoscale polyhedrons and holes after an annealing process, supported by the results of XRD and SEM/EDX. This work may provide new ideas for applications of thermal emitters operating at substantially wide temperature range.

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Ping Song, Cong Wang, Ying Sun, Angelique Bousquet, Eric Tomasella. 2019-10-30. Broadband and wide-temperature-range thermal emitter with super-hydrophobicity based on oxidized high-entropy film. https://arxiv.org/abs/1910.13629

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