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A Janus emitter for passive heat release from enclosures

Authors
Heo, Se-YeonLee, Gil JuKim, HyeonKim, Yeong JaeIshii, SatoshiKim, Min SeokSeok, Tae JoonLee, Bong JaeLee, HeonSong, Young Min
Issue Date
9월-2020
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Citation
SCIENCE ADVANCES, v.6, no.36
Indexed
SCIE
SCOPUS
Journal Title
SCIENCE ADVANCES
Volume
6
Number
36
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/53609
DOI
10.1126/sciadv.abb1906
ISSN
2375-2548
Abstract
Passive radiative cooling functions by reflecting the solar spectrum and emitting infrared waves in broadband or selectively. However, cooling enclosed spaces that trap heat by greenhouse effect remains a challenge. We present a Janus emitter (JET) consisting of an Ag-polydimethylsiloxane layer on micropatterned quartz substrate. The induced spoof surface plasmon polariton helps overcome inherent emissivity loss of the polymer and creates near-ideal selective and broadband emission on the separate sides. This design results in not only remarkable surface cooling when the JET is attached with either side facing outwards but also space cooling when used as an enclosure wall. Thus, the JET can passively mitigate the greenhouse effect in enclosures while offering surface cooling performance comparable to conventional radiative coolers.
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Lee, Heon
공과대학 (신소재공학부)
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