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Title: Photonic thermal management of coloured objects

Journal Article · · Nature Communications
ORCiD logo [1];  [1];  [2];  [1]
  1. Stanford Univ., Stanford, CA (United States). Dept. of Electrical Engineering, Ginzton Lab.
  2. Stanford Univ., Stanford, CA (United States). Dept. of Electrical Engineering, Ginzton Lab.; Southeast Univ., Nanjing (China). School of Mechanical Engineering

The colours of outdoor structures, such as automobiles, buildings and clothing, are typically chosen for functional or aesthetic reasons. With a chosen colour, however, one must control the radiative thermal load for heating or cooling purposes. Here we provide a comprehensive calculation of the tunable range of radiative thermal load for all colours. The range exceeds 680 Wm–2 for all colours, and can be as high as 866 Wm–2, resulting from effects of metamerism, infrared solar absorption and radiative cooling. We experimentally demonstrate that two photonic structures with the same pink colour can have their temperatures differ by 47.6 °C under sunlight. These structures are over 20 °C either cooler or hotter than a commercial paint with a comparable colour. Furthermore, the hotter pink structure is 10 °C hotter than a commercial black paint. Here, these results elucidate the fundamental potentials of photonic thermal management for coloured objects.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Light-Material Interactions in Energy Conversion (LMI); California Institute of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0001293
OSTI ID:
1483402
Journal Information:
Nature Communications, Vol. 9, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 94 works
Citation information provided by
Web of Science

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Cited By (8)

Ultrafast pyroelectric photodetection with on-chip spectral filters journal November 2019
Kirchhoff’s metasurfaces towards efficient photo-thermal energy conversion journal June 2019
A polydimethylsiloxane-coated metal structure for all-day radiative cooling journal August 2019
Large-area, lithography-free, narrow-band and highly directional thermal emitter journal January 2019
Self-adaptive radiative cooling and solar heating based on a compound metasurface journal January 2020
Radiative sky cooling: Fundamental principles, materials, and applications journal June 2019
Optical engineering of polymer materials and composites for simultaneous color and thermal management journal January 2019
An ode to polyethylene journal January 2019

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