Biomaterial‐Based “Structured Opals” with Programmable Combination of Diffractive Optical Elements and Photonic Bandgap Effects,Advanced Materials

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Biomaterial‐Based “Structured Opals” with Programmable Combination of Diffractive Optical Elements and Photonic Bandgap Effects
Advanced Materials ( IF 27.4 ) Pub Date : 2018-12-06 , DOI: 10.1002/adma.201805312
Yu Wang _{1,

2} , Wenyi Li _{1,

2} , Meng Li _{1,

2} , Siwei Zhao ₁ , Fabio De Ferrari _{1,

2} , Marco Liscidini ₃ , Fiorenzo G. Omenetto _{1,

2,

4}

Affiliation

Naturally occurring iridescent systems produce brilliant color displays through multiscale, hierarchical assembly of structures that combine reflective, diffractive, diffusive, or absorbing domains. The fabrication of biopolymer‐based, hierarchical 3D photonic crystals through the use of a topographical templating strategy that allows combined optical effects derived from the interplay of predesigned 2D and 3D geometries is reported here. This biomaterials‐based approach generates 2D diffractive optics composed of 3D nanophotonic lattices that allow simultaneous control over the reflection (through the 3D photonic bandgap) and the transmission (through 2D diffractive structuring) of light with the additional utility of being constituted by a biocompatible, implantable, edible commodity textile material. The use of biopolymers allows additional degrees of freedom in photonic bandgap design through directed protein conformation modulation. Demonstrator structures are presented to illustrate the lattice multifunctionality, including tunable diffractive properties, increased angle of view of photonic crystals, color‐mixing, and sensing applications.

中文翻译：

基于生物材料的“结构蛋白石”，可将衍射光学元件和光子带隙效应进行可编程组合

自然发生的虹彩系统通过将反射，衍射，漫射或吸收域组合在一起的结构的多尺度，层次化组装来产生出色的彩色显示。此处报道了通过使用拓扑模板策略制造基于生物聚合物的分层3D光子晶体的方法，该策略允许组合光学效应，这些光学效应源自预先设计的2D和3D几何形状之间的相互作用。这种基于生物材料的方法可生成由3D纳米光子晶格组成的2D衍射光学器件，从而可以同时控制光的反射（通过3D光子能带隙）和透射（通过2D衍射结构），并具有由生物相容性构成的附加功能，可植入的可食用的商品纺织材料。生物聚合物的使用通过定向的蛋白质构象调节，在光子带隙设计中提供了额外的自由度。展示了演示器结构，以说明晶格的多功能性，包括可调衍射特性，增加的光子晶体视角，混色和传感应用。

更新日期：2018-12-06

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