Photonic Crystal Hydrogels Fabricated from Nanoparticles of Fe3O4/SiO2 with Programmable Colors through Photopolymerization for Applications as Anticounterfeiting Applications
Jia Deng,
Shaoge Fu,
Yifan Zhong
et al.
Abstract:Photonic crystal (PC) hydrogels with unique micro/ nanostructures have excellent prospects in many fields, such as sensing, displays, anticounterfeiting, information encryption, and adaptive camouflage. Herein, magnetic core−shell Fe 3 O 4 /SiO 2 nanoparticles with a controlled size were synthesized, followed by PC hydrogels of arbitrary structures that were fabricated via the magnetically inducing self-assembly of magnetic nanoparticles in the poly(ethylene glycol) diacrylate (PEGDA) pregel solution and a sub… Show more
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