US 11,940,616 B2
Scalable method of fabricating structured polymers for passive daytime radiative cooling and other applications
Jyotirmoy Mandal, Chittagong (BD); Yuan Yang, New York, NY (US); and Nanfang Yu, Fort Lee, NJ (US)
Assigned to The Trustees of Columbia University in the City of New York, New York, NY (US)
Appl. No. 16/770,256
Filed by THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK, New York, NY (US)
PCT Filed Dec. 10, 2018, PCT No. PCT/US2018/064788
§ 371(c)(1), (2) Date Jun. 5, 2020,
PCT Pub. No. WO2019/113596, PCT Pub. Date Jun. 13, 2019.
Claims priority of provisional application 62/596,145, filed on Dec. 8, 2017.
Prior Publication US 2021/0165206 A1, Jun. 3, 2021
Int. Cl. G02B 26/00 (2006.01); C08J 9/28 (2006.01); C08K 5/00 (2006.01); C09D 5/33 (2006.01); E04D 7/00 (2006.01); E04D 13/00 (2006.01); E04F 13/08 (2006.01); E06B 9/24 (2006.01); G02B 1/14 (2015.01); G02B 5/20 (2006.01)
CPC G02B 26/004 (2013.01) [C08J 9/286 (2013.01); C08K 5/0041 (2013.01); C09D 5/004 (2013.01); E04D 7/00 (2013.01); E04D 13/00 (2013.01); E04F 13/08 (2013.01); E06B 9/24 (2013.01); G02B 1/14 (2015.01); G02B 5/208 (2013.01); B32B 2305/026 (2013.01); C08J 2301/12 (2013.01); C08J 2301/28 (2013.01); C08J 2325/06 (2013.01); C08J 2327/06 (2013.01); C08J 2327/14 (2013.01); C08J 2327/20 (2013.01); C08J 2383/04 (2013.01); E06B 2009/2411 (2013.01); E06B 2009/2417 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A switchable light transmission module, comprising:
a substrate having a first surface defining at least part of an enclosed volume;
a porous layer disposed on the first surface and in fluid communication with the enclosed volume; and
a reservoir in fluid communication with the enclosed volume and including a non-dissolving fluid;
the reservoir being configured to supply the fluid to the enclosed volume such that the fluid contacts the porous layer, wherein the porous layer is wetted when the fluid is in the enclosed volume, and is dried when the fluid is in the reservoir,
wherein the fluid has a refractive index that is within about 30% of the refractive index of the porous layer.