A Layered-Composite Nanometric Sb2Te3 Material for Chiral Photonic Bandgap Engineering

Goi, E, Yue, Z, Cumming, B and Gu, M 2018, 'A Layered-Composite Nanometric Sb2Te3 Material for Chiral Photonic Bandgap Engineering', Physica Status Solidi (A) Applications and Materials Science, vol. 215, no. 14, pp. 1-6.


Document type: Journal Article
Collection: Journal Articles

Title A Layered-Composite Nanometric Sb2Te3 Material for Chiral Photonic Bandgap Engineering
Author(s) Goi, E
Yue, Z
Cumming, B
Gu, M
Year 2018
Journal name Physica Status Solidi (A) Applications and Materials Science
Volume number 215
Issue number 14
Start page 1
End page 6
Total pages 6
Publisher Wiley
Abstract Biological systems have been using nanometre-scale architectures to produce striking optical effects and the way these natural photonic structures manipulate the flow of light has inspired many technological applications. Nevertheless, the applications of these natural structures in photonic devices require appropriate fabrication techniques able to tailor and enhance the natural features of the biological systems. In this communication the authors report on the development of a layered-composite nanometric Sb2Te3 material for the realization of bio-inspired three-dimensional chiral photonic crystals exceeding their natural optical properties. The authors demonstrate that the deposition of Sb2Te3 on laser written polymer templates can fabricate biomimetic photonic structures with superior control over size, periodicity, filling fraction, and refractive index, compared with the natural counterparts. In this way the refractive index of the photonic crystals can be increased by 100% and the photonic bandgap for use in practical devices can be precisely engineered. These bio-inspired structures can be useful in the investigation of new branches of photonics and in the development of novel chiral optical devices capable of manipulating photons in three dimensions.
Subject Classical Physics not elsewhere classified
Optical Physics not elsewhere classified
Inorganic Chemistry not elsewhere classified
Keyword(s) circular dichroism
gyroids
photonic bandgaps
three-dimensional photonic crystals
DOI - identifier 10.1002/pssa.201800152
Copyright notice © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN 1862-6300
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