A Janus emitter for passive heat release from enclosures

被引：178

作者：

Heo, Se-Yeon ^{[1
]}

Lee, Gil Ju ^{[1
]}

Kim, Hyeon ^{[1
]}

Kim, Yeong Jae ^{[1
]}

Ishii, Satoshi ^{[2
,3
]}

Kim, Min Seok ^{[1
]}

Seok, Tae Joon ^{[1
]}

Lee, Bong Jae ^{[4
]}

Lee, Heon ^{[5
]}

Song, Young Min ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol, Sch Elect Engn & Comp Sci EECS, 123 Cheomdangwagi Ro, Gwangju 61005, South Korea

[2] Natl Inst Mat Sci NIMS, Int Ctr Mat Nanoarchitecton, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[3] Japan Sci & Technol Agcy, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 3320012, Japan

[4] Korea Adv Inst Sci & Technol KAIST, Dept Mech Engn, 291 Daehak Ro, Daejeon 34141, South Korea

[5] Korea Univ, Dept Mat Sci & Engn, 145 Anam Ro, Seoul 02841, South Korea

来源：

SCIENCE ADVANCES | 2020年 / 6卷 / 36期

基金：

新加坡国家研究基金会;

关键词：

RADIATION;

D O I：

10.1126/sciadv.abb1906

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页数：8

共 35 条

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