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. 2020 Aug 7;10(8):1554. doi: 10.3390/nano10081554

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A) Schematic diagram of TiO $_{2}$ based color filter, the reflection spectra shows dependence of filter on the device dimensions (here the width of the bottom face w is varied from 200 to 250 nm). (B) Color image printing is exhibited with the top view SEM image of the logo with transmission and reflection colorful images under bright field microscope. Reproduced with permission of [220]. Copyright American Chemical Society, 2017. (C) Simulated and experimental results for additive colors of all dielectric metasurfaces based on cross-shaped resonators. Reproduced with permission of [221]. Copyright American Chemical Society, 2017. (D) Schematic diagram of 2D lattice of a-Si:H nanodisks on a glass substrate [222].