Optimization of sharp and viewing-angle-independent structural color
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233760.pdf
Description
Main article
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3.1 MB
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Author(s)
Hsu, Chia Wei
Miller, Owen D.
Johnson, Steven G.
Soljacic, Marin
Date Issued
April 2015
Journal
Optics Express
Publisher
Optical Society of America
Citation
Hsu, Chia Wei, Owen D. Miller, Steven G. Johnson, and Marin Soljacic. “Optimization of Sharp and Viewing-Angle-Independent Structural Color.” Optics Express 23, no. 7 (2015): 9516.
Version
Author's final manuscript
Abstract
Structural coloration produces some of the most brilliant colors in nature and has many applications. Motivated by the recently proposed transparent displays that are based on wavelength-selective scattering, here we consider the new problem of transparent structural color, where objects are transparent under omnidirectional broad-band illumination but scatter strongly with a directional narrow-band light source. Transparent structural color requires two competing properties, narrow bandwidth and broad viewing angle, that have not been demonstrated simultaneously previously. Here, we use numerical optimization to discover geometries where a sharp 7% bandwidth in scattering is achieved, yet the peak wavelength varies less than 1%, and the peak height and peak width vary less than 6% over broad viewing angles (0–90°) under a directional illumination. Our model system consists of dipole scatterers arranged into several rings; interference among the scattered waves is optimized to yield the wavelength-selective and angle-insensitive response.
MIT Department
Massachusetts Institute of Technology. Department of Mathematics
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1364/OE.23.009516
