US 12,455,470 B2
Assembly and method for actively controlling radiation transmission
Souvik Ghosh, Boulder, CO (US); and Ivan Smalyukh, Boulder, CO (US)
Assigned to The Regents of the University of Colorado, Denver, CO (US)
Filed by The Regents of the University of Colorado, Denver, CO (US)
Filed on Feb. 27, 2023, as Appl. No. 18/114,782.
Claims priority of provisional application 63/314,190, filed on Feb. 25, 2022.
Prior Publication US 2023/0273474 A1, Aug. 31, 2023
Int. Cl. G02F 1/1334 (2006.01); B82Y 30/00 (2011.01); C09K 19/52 (2006.01); C09K 19/56 (2006.01); G08C 23/04 (2006.01)
CPC G02F 1/1334 (2013.01) [C09K 19/56 (2013.01); G08C 23/04 (2013.01); B82Y 30/00 (2013.01); C09K 2019/528 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An assembly for actively controlling infrared radiation transmission, the assembly comprising:
a power source;
a first substrate having a plurality of electrodes thereon, the plurality of electrodes coupled to the power source;
a second substrate;
a composite material interposed between the first substrate and the second substrate, the composite material comprising plasmonic nanoparticles dispersed in a nematic liquid crystal;
a functionalized coating overlaying the plasmonic nanoparticles, the functionalized coating comprising silica; and
a chemical coating overlaying the functionalized coating, the chemical coating comprising one or more of dimethyloctadecyl[3-(trimethoxysilyl) propyl]ammonium chloride (DMOAP), sodium dodecyl sulfate (SDS), and perfluorocarbon polymers,
wherein the plasmonic nanoparticles comprise one or more of aluminum, aluminum-doped zinc oxide, and indium tin oxide, and
wherein the plasmonic nanoparticles are anisotropic.