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.
journal_name
Sci Advjournal_title
Science advancesauthors
Heo SY,Lee GJ,Kim DH,Kim YJ,Ishii S,Kim MS,Seok TJ,Lee BJ,Lee H,Song YMdoi
10.1126/sciadv.abb1906subject
Has Abstractpub_date
2020-09-04 00:00:00issue
36issn
2375-2548pii
6/36/eabb1906journal_volume
6pub_type
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