Show simple item record

dc.contributor.authorZhou, Lyu
dc.contributor.authorSong, Haomin
dc.contributor.authorZhang, Nan
dc.contributor.authorRada, Jacob
dc.contributor.authorSinger, Matthew
dc.contributor.authorZhang, Huafan
dc.contributor.authorOoi, Boon S.
dc.contributor.authorYu, Zongfu
dc.contributor.authorGan, Qiaoqiang
dc.date.accessioned2020-03-29T13:22:21Z
dc.date.available2020-03-29T13:22:21Z
dc.date.issued2020-03-23
dc.identifier.urihttp://hdl.handle.net/10754/662367
dc.description.abstractAs an emerging electricity-free cooling technology, radiative cooling employs outer space as the heat sink. With this, a sky-facing thermal emitter is usually required. Due to the black-body radiation limit at ambient temperature, the maximum cooling power density for a single-faced radiative cooling device is ~156.9 W/m2. Here we report a double-sided radiative cooling architecture using graded nanocomposite metamaterials (GNM) designed for a vertically aligned thermal emitter. This GNM structure possesses an optical absorption of over 90% throughout the solar spectrum, and exceeds 90% reflection in the mid-infrared spectral region. With this configuration, both sides of a planar thermal emitter can be used to perform radiative cooling and a record cooling power density beyond 280 W/m2 was realized in a single thin-film thermal emitter. Under the standard pressure, we realized a temperature reduction of 14 degree Celsius below the ambient temperature in the laboratory environment, and over 12 degree Celsius in the outdoor test.
dc.publisherarXiv
dc.relation.urlhttps://arxiv.org/pdf/2003.10495
dc.rightsArchived with thanks to arXiv
dc.titleGraded nanocomposite metamaterials for a double-sided radiative cooling architecture with a record breaking cooling power density
dc.typePreprint
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentPhotonics Laboratory
dc.eprint.versionPre-print
dc.contributor.institutionDepartment of Electrical Engineering, The State University of New York at Buffalo, Buffalo, NY 14260, USA.
dc.contributor.institutionDepartment of Electrical and Computer Engineering, University of Wisconsin, Madison, Wisconsin 53705, USA
dc.identifier.arxivid2003.10495
kaust.personZhang, Huafan
kaust.personOoi, Boon S.
refterms.dateFOA2020-03-29T13:23:47Z


Files in this item

Thumbnail
Name:
graded nano.pdf
Size:
2.430Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record