Open AccessDesign of VO2-coated silicon microspheres for thermally-regulating paint
Author(s) -
Ming-Kun Chen,
Ayman T A Morsy,
Michelle L. Povinelli
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.021787
Subject(s) - emissivity , materials science , silicon , thermal , substrate (aquarium) , optics , common emitter , microsphere , microparticle , aluminium , scaling , crystalline silicon , optoelectronics , composite material , oceanography , physics , geometry , engineering , mathematics , chemical engineering , geology , meteorology
Recent work has proposed an approach to design materials that regulate their own temperature. The concept is based on a temperature-dependent thermal emitter that has minimal emissivity below a target temperature, and maximal emissivity above it. Here we propose a microparticle approach suitable for scaling to large areas. We use electromagnetic and thermal simulations to show that the designed particles provide a 13x reduction in temperature variation relative to an uncoated aluminum substrate.