气候变化领域集成服务门户(CCPortal): Designing angle-independent structural colors using Monte Carlo simulations of multiple scattering

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DOI	10.1073/pnas.2015551118
	Designing angle-independent structural colors using Monte Carlo simulations of multiple scattering
	Hwang V.; Stephenson A.B.; Barkley S.; Brandt S.; Xiao M.; Aizenberg J.; Manoharan V.N.
发表日期	2021
ISSN	00278424
卷号	118 期号:4
英文摘要	Disordered nanostructures with correlations on the scale of visible wavelengths can show angle-independent structural colors. These materials could replace dyes in some applications because the color is tunable and resists photobleaching. However, designing nanostructures with a prescribed color is difficult, especially when the application—cosmetics or displays, for example—requires specific component materials. A general approach to solving this constrained design problem is modeling and optimization: Using a model that predicts the color of a given system, one optimizes the model parameters under constraints to achieve a target color. For this approach to work, the model must make accurate predictions, which is challenging because disordered nanostructures have multiple scattering. To address this challenge, we develop a Monte Carlo model that simulates multiple scattering of light in disordered arrangements of spherical particles or voids. The model produces quantitative agreement with measurements when we account for roughness on the surface of the film, particle polydispersity, and wavelength-dependent absorption in the components. Unlike discrete numerical simulations, our model is parameterized in terms of experimental variables, simplifying the connection between simulation and fabrication. To demonstrate this approach, we reproduce the color of the male mountain bluebird (Sialia currucoides) in an experimental system, using prescribed components and a microstructure that is easy to fabricate. Finally, we use the model to find the limits of angle-independent structural colors for a given system. These results enable an engineering design approach to structural color for many different applications. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Engineering design; Monte Carlo; Multiple scattering; Structural color
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180906
作者单位	Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, United States; Department of Physics, Harvard University, Cambridge, MA 02138, United States; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, United States
推荐引用方式 GB/T 7714	Hwang V.,Stephenson A.B.,Barkley S.,et al. Designing angle-independent structural colors using Monte Carlo simulations of multiple scattering[J],2021,118(4).
APA	Hwang V..,Stephenson A.B..,Barkley S..,Brandt S..,Xiao M..,...&Manoharan V.N..(2021).Designing angle-independent structural colors using Monte Carlo simulations of multiple scattering.Proceedings of the National Academy of Sciences of the United States of America,118(4).
MLA	Hwang V.,et al."Designing angle-independent structural colors using Monte Carlo simulations of multiple scattering".Proceedings of the National Academy of Sciences of the United States of America 118.4(2021).