In:
Advanced Photonics Research, Wiley, Vol. 3, No. 2 ( 2022-02)
Abstract:
Photonic crystals (PCs) with controllable lattice structures, photonic bandgaps, and brilliant colors are fabricated by the self‐assembly of the monodispersed anisotropic metal–organic framework (MOF) ZIF‐8 particles into long‐range ordered superstructures. The shape parameter ( m ) of the particles is used to quantify to what degree the particle shape has deformed from that of a perfect sphere ( m = 2) and that of a perfect cube ( m = ∞). It is experimentally proven that m value is the key for controlling the lattice structures. Three PCs with different m values of ZIF‐8 particles (9.7, 4.7, and 2.5) are found to be simple cubic, rhombohedral, and face‐centered‐cubic structures, respectively. Different from the conventional spherical particles‐based PCs, brilliant colors can be generated from the second‐order diffraction of the nonspherical MOFs‐based PCs. Taking advantage of this unique characteristic, a new information encryption technology is developed by combing the first‐order diffraction of rhombohedral PCs and first‐second‐order diffraction of simple‐cubic PCs. This work paves a way to explore nonspherical particle‐based PCs materials with different crystal forms and provides a new insight in novel optical characteristics of the PCs, which will promote their applications in anticounterfeiting, color displays, and printings.
Type of Medium:
Online Resource
ISSN:
2699-9293
,
2699-9293
DOI:
10.1002/adpr.202100246
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
3009932-8
