结构着色
彩虹色
微尺度化学
油滴
乳状液
材料科学
水溶液
壳体(结构)
化学工程
纳米技术
化学物理
光学
复合材料
化学
光电子学
有机化学
物理
数学教育
数学
光子晶体
工程类
作者
Dongyu Li,Wei Wang,Liang‐Yin Chu,Nan‐Nan Deng
出处
期刊:Nano Letters
[American Chemical Society]
日期:2023-08-07
卷期号:23 (20): 9657-9663
被引量:6
标识
DOI:10.1021/acs.nanolett.3c02119
摘要
Structural colors show diverse advantages such as fade resistance, eco-friendliness, iridescence, and high saturation in comparison with chemical pigments. In this paper, we show tunable structural coloration in colorless water-in-oil-in-water double emulsion droplets via total internal reflection and interference at the microscale concave interfaces. Through experimental work and simulations, we demonstrate that the shell thickness and the eccentricity of the core-shell structures are key to the successful formation of iridescent structural colors. Only eccentric thin-shell water-in-oil-in-water droplets show structural colors. Importantly, structural colors based on water-oil interfaces are readily responsive to a variety of environmental stimuli, such as osmotic pressure, temperature, magnetic fields, and light composition. This work highlights an alternative structural coloration that expands the applications of droplet-based structural colors to aqueous systems.
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