Devices and methods for radiative cooling
AssigneeThe Trustees of Columbia University in the City of New York
InventorsNanfang Yu, Norman Shi, Meng Tian
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Abstract
Devices for radiative cooling and optical waveguiding are provided, wherein the devices comprise a fabric including one or more fibers extending for a length in a longitudinal direction and a plurality of void structures positioned within each of the one or more fibers and extended over the length of each of the one or more fibers. Each of the plurality of void structures is configured to scatter at least a portion of an electromagnetic radiation received thereon to thereby radiatively cool the object.
Claims13
A system for radiative cooling of an object positioned thereunder, comprising:
- a fabric including one or more fibers extending for a length in a longitudinal direction;
- and
- a plurality of void structures positioned inside of each of the one or more fibers and extended over the length of each of the one or more fibers,
- wherein the plurality of the void structures are configured to confine at least a portion of electromagnetic radiation received thereon in a transverse direction of the one or more fiber and propagate the electromagnetic radiation in a longitudinal direction of the one or more fibers to thereby radiatively cool the object;
- wherein the one or more fibers are configured to have the plurality of the void structures in a density between about 2.2 voids/μm2 and about 17 voids/μm2 to enhance a solar reflectivity in visible and near-infrared spectrums.
Dependencies are inferred from the claim text.