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Proceedings Paper

A bioinspired broadband reflector in the VIS-NIR wavelength range
Author(s): Francesco Chiadini; Vincenzo Fiumara; Antonio Scaglione
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Paper Abstract

Dielectric reflectors which can be found in the shells of some gold beetles (e.g. Anopognathus parvulus and Aspidomorpha tecta) consist of a stack of alternating layers of two high- and low-refractive index materials. Inspired by these structures, here we describe irregularly staggered reflectors which can be designed to feature high reflectance in a broad wavelength band that includes entirely the visible (VIS) and partially the nearinfrared (NIR) regions ([400, 1400] nm). Given the materials and the number of layers, we use a dedicated genetic algorithm to find out the reflector configuration (i.e., the sequence of the thicknesses of the layers) maximizing the reflectance in the considered wavelength band. Some results are reported showing the characteristics of such reflectors.

Paper Details

Date Published: 27 March 2018
PDF: 6 pages
Proc. SPIE 10593, Bioinspiration, Biomimetics, and Bioreplication VIII, 105930D (27 March 2018); doi: 10.1117/12.2293457
Show Author Affiliations
Francesco Chiadini, Univ. degli Studi di Salerno (Italy)
Vincenzo Fiumara, Univ. degli Studi della Basilicata (Italy)
Antonio Scaglione, Univ. degli Studi di Salerno (Italy)

Published in SPIE Proceedings Vol. 10593:
Bioinspiration, Biomimetics, and Bioreplication VIII
Akhlesh Lakhtakia, Editor(s)

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