期刊
SCIENCE
卷 349, 期 6245, 页码 298-301出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aab3564
关键词
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资金
- NSF [PHY-1411445, ECCS-1307948]
- Air Force Office of Scientific Research, Multidisciplinary University Research Initiative program [FA9550-14-1-0389]
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-SC0012704]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1411445] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1307948] Funding Source: National Science Foundation
Saharan silver ants, Cataglyphis bombycina, forage under extreme temperature conditions in the African desert. We show that the ants' conspicuous silvery appearance is created by a dense array of triangular hairs with two thermoregulatory effects. They enhance not only the reflectivity of the ant's body surface in the visible and near-infrared range of the spectrum, where solar radiation culminates, but also the emissivity of the ant in the mid-infrared. The latter effect enables the animals to efficiently dissipate heat back to the surroundings via blackbody radiation under full daylight conditions. This biological solution for a thermoregulatory problem may lead to the development of biomimetic coatings for passive radiative cooling of objects.
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