Vivid colours in hyperuniform complex-index photonic structures by resonant interference of photonic band gaps and optical band gaps

被引：1

作者：

Seo, Chunhee ^{[1
]}

Hyon, Jinho ^{[1
,2
]}

Suk, Soyeon ^{[1
]}

Oh, Changjoon ^{[1
]}

Nam, Jihye ^{[1
]}

Duong Nguyen Minh ^{[1
]}

Sim, Jae Hyun ^{[1
]}

Kang, Youngjong ^{[1
,3
]}

机构：

[1] Hanyang Univ, Dept Chem, 222 Wangsimni Ro, Seoul 04763, South Korea

[2] Rice Univ, Mat Sci & Nanoengn, 6100 Main St, Houston, TX 77005 USA

[3] Hanyang Univ, Res Inst Nat Sci, Inst Nano Sci & Technol, 222 Wangsimni Ro, Seoul 04763, South Korea

来源：

RSC ADVANCES | 2018年 / 8卷 / 63期

基金：

新加坡国家研究基金会;

关键词：

DERMAL COLLAGEN ARRAYS; REFRACTIVE-INDEX; CONVERGENT EVOLUTION; COLORATION; SCATTERING; CRYSTALS; CONTRAST; SKIN; PIGMENTS; SENSORS;

D O I：

10.1039/c8ra07363e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hyperuniform photonic structures (HPSs) have been doped with complex index materials to increase their reflectivity and colour expression range. HPSs synthesized using dielectric SiO2 nanoparticles have been mixed with a small amount of dopant nanoparticles (c(d) 1%) having a complex refractive index. Various dyes including Sudan I, Sudan Blue II, Alizarin yellow GG, Bromocresol purple and polydopamine (PDA) are used as dopants. Large reflectivity enhancements of HPSs (approximate to 100%) are observed by resonant interference of photonic band gaps (PBGs) and optical band gaps (OBGs). Reflectivity enhancements are observed only when PBGs of HPSs match with OBGs of dopants. The colour expression range of HPS increases by 600% by doping with melanine-like PDA nanoparticles, which have the imaginary part of the refractive index in whole visible range.

引用

页码：36272 / 36279

页数：8

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