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Publisher DOI: 10.1063/1.5084138
Title: Highly selective photonic glass filter for saturated blue structural color
Language: English
Authors: Shang, Guoliang 
Häntsch, Quynh Yen 
Pagnan Furlan, Kaline 
Janßen, Rolf 
Schneider, Gerold 
Petrov, Alexander 
Eich, Manfred 
Issue Date: 2-Apr-2019
Source: APL Photonics 4 (4): 046101-1- (2019)
Journal or Series Name: APL photonics 
Abstract (english): Angle independent non-absorbing spectral filters are required for many applications such as sunscreens, structural colors, photovoltaics, and radiative cooling. One of the promising and simple to manufacture structures is based on the disordered arrangement of monodisperse spherical particles by self-assembly, also called photonic glasses. So far, reported photonic glasses inherently show poor spectral selectivity with a smooth transition in reflection. No significant improvement is usually expected from particles optimization as the Mie resonances are broad for small dielectric particles with a moderate refractive index. Via Fourier space engineering, we show here that it is, nonetheless, possible to obtain sharp spectral transitions from the synergetic effect of a core-shell geometry of the particles with the short range order of the photonic glass. We apply the developed approach to demonstrate a high color saturation of a non-iridescent blue structural color employing a photonic glass with hollow sphere particles, which features a sharp spectral transition in reflection. The experimental results support the theoretical predictions from the first-order approximation. © 2019 Author(s).
DOI: 10.15480/882.2206
ISSN: 2378-0967
Institute: Keramische Hochleistungswerkstoffe M-9 
Optische und Elektronische Materialien E-12 
Type: (wissenschaftlicher) Artikel
Funded by: DFG - SFB 986 “Tailor-Made Multi-Scale Materials Systems: M3,” Project Nos. C2, C4, and C5.
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