Asrar, Ghassem Tanre, Didier Choudhury, Bhaskar J.ġD and 3D radiative-transfer models have been used to investigate the problem of remotely sensed determination of vegetated land surface- absorbed and reflected solar radiation. Remote sensing of solar radiation absorbed and reflected by vegetated land surfaces Lastly, our work shows that the concept of radiative cooling can be used in combination with the utilization of sunlight, enabling new technological capabilities.Â«Â less WhenmoreÂ Â» placed on a silicon absorber under sunlight, such a blackbody preserves or even slightly enhances sunlight absorption, but reduces the temperature of the underlying silicon absorber by as much as 13 Â☌ due to radiative cooling. In this paper, we experimentally demonstrate a visibly transparent thermal blackbody, based on a silica photonic crystal. Therefore, in these applications it would be very attractive to directly use the sky as a heat sink while preserving solar absorption properties. Because a solar absorber by necessity faces the sky, it also naturally has radiative access to the coldness of the universe. In many applications, including solar cells and outdoor structures, the absorption of sunlight is intrinsic for either operational or aesthetic considerations, but the resulting heating is undesirable.

PMID:26392542Ī solar absorber, under the sun, is heated up by sunlight.

Our work shows that the concept of radiative cooling can be used in combination with the utilization of sunlight, enabling new technological capabilities. When placed on a silicon absorber under sunlight, such a blackbody preserves or even slightly enhances sunlight absorption, but reduces the temperature of the underlying silicon absorber by as much as 13 Â☌ due to radiative cooling. Here we experimentally demonstrate a visibly transparent thermal blackbody, based on a silica photonic crystal. Fan, ShanhuiĪ solar absorber, under the sun, is heated up by sunlight.

Radiative cooling of solar absorbers using a visibly transparent photonic crystal thermal blackbody Zhu, Linxiao Raman, Aaswath P Fan, ShanhuiĪ solar absorber, under the sun, is heated up by sunlight. Radiative cooling of solar absorbers using a visibly transparent photonic crystal thermal blackbody.

Beneath a steel sky radiation