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Full color generation with Fano-type resonant HfO2 nanopillars designed by a deep-learning approach

Abstract

In contrast to lossy plasmonic metasurfaces (MSs), wideband dielectric MSs comprising of subwavelength nanostructures supporting Mie resonances are of great interest in the visible wavelength range. Here, for the first time to our knowledge, we experimentally demonstrate a reflective MS consisting of a square-lattice array of Hafnia (HfO2) nanopillars to generate a wide color gamut. To design and optimize these MSs, we use a deep-learning algorithm based on a dimensionality reduction technique. Good agreement is observed between simulation and experimental results in yielding vivid and high-quality colors. We envision that these structures not only empower the high-resolution digital displays and sensitive colorimetric biosensors but also can be applied to on-demand applications of beaming in a wide wavelength range down to deep ultraviolet.

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Publication details

The article was accepted on 29 Sep 2019 and first published on 10 Oct 2019


Article type: Paper
DOI: 10.1039/C9NR07408B
Nanoscale, 2019, Accepted Manuscript

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    Full color generation with Fano-type resonant HfO2 nanopillars designed by a deep-learning approach

    O. Hemmatyar, S. Abdollahramezani, Y. Kiarashinejad, M. Zandehshahvar and A. Adibi, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR07408B

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