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Proceedings Paper

Thermal homeostasis using nanophotonic phase change materials (Conference Presentation)
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Paper Abstract

We consider the design of nanostructured materials for thermal homeostasis, or the ability to maintain a temperature within a fixed range despite externally varying heat input. Our design uses nano- and microstructured phase-change materials to achieve a sharp change in thermal emission at a particular phase-transition temperature. We use electromagnetic simulations to calculate the thermal infrared absorption spectra for metal and insulator phases of the phase-change material. The results indicate a large increase in thermal emission at the phase transition. We then use numerical simulations of the heat equation to show that the sharp change in emission results in thermal homeostasis. For a varying external heat source, the material experiences much smaller temperature fluctuations than an unstructured or bulk material.

Paper Details

Date Published: 22 September 2017
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Proc. SPIE 10345, Active Photonic Platforms IX, 103451C (22 September 2017); doi: 10.1117/12.2275104
Show Author Affiliations
Michelle L. Povinelli, The Univ. of Southern California (United States)
Shao-Hua Wu, The Univ. of Southern California (United States)
Mingkun Chen, The Univ. of Southern California (United States)
Michael Barako, NG Next Northrop Grumman Corp. (United States)
Vladan Jankovic, NG Next Northrop Grumman Corp. (United States)
Philip W. C. Hon, NG Next Northrop Grumman Corp. (United States)
Luke A. Sweatlock, NG Next Northrop Grumman Corp. (United States)


Published in SPIE Proceedings Vol. 10345:
Active Photonic Platforms IX
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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