US 12,242,048 B2
Bilayer photonic crystal photoswitch thin-film device and preparation method thereof
Shufen Zhang, Liaoning (CN); Yong Qi, Liaoning (CN); Wenbin Niu, Liaoning (CN); Suli Wu, Liaoning (CN); Wei Ma, Liaoning (CN); and Bingtao Tang, Liaoning (CN)
Assigned to DALIAN UNIVERSITY OF TECHNOLOGY, Liaoning (CN)
Appl. No. 17/756,714
Filed by DALIAN UNIVERSITY OF TECHNOLOGY, Liaoning (CN)
PCT Filed Sep. 8, 2020, PCT No. PCT/CN2020/113933
§ 371(c)(1), (2) Date May 31, 2022,
PCT Pub. No. WO2021/103738, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 201911207282.1 (CN), filed on Nov. 29, 2019.
Prior Publication US 2023/0003993 A1, Jan. 5, 2023
Int. Cl. G02B 26/00 (2006.01); C08F 222/10 (2006.01); C08J 5/18 (2006.01); G02B 1/00 (2006.01)
CPC G02B 26/007 (2013.01) [C08F 222/103 (2020.02); C08J 5/18 (2013.01); G02B 1/005 (2013.01); C08J 2335/02 (2013.01); G02F 2202/32 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A bilayer photonic crystal photoswitch thin-film device, comprising two opal photonic crystal templates with different thicknesses and a flexible polymer thin-film material, wherein the templates are assembled by nanospheres and combined by perpendicular dislocation into a “sandwich” structure, and the flexible polymer thin-film material is prepared by copolymerization of a precursor solution under an action of ultraviolet light, wherein the precursor solution is prepared by acrylic acid and esters thereof, mercaptoacrylates and photoinitiator; wherein, by rotating the bilayer photonic crystal photoswitch thin-film along a horizontal direction of the bilayer photonic crystal photoswitch thin-film, opening and closing of two periodically controllable optical paths of 30° and 60° are realized.