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Quantifying Structural Order and Its Effect on Absorption in Structurally Colored Colloidal Assemblies

delete2026-07-30
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PRE
AI
Z
Zhe Wang
Y
Yang Lin
Y
Yujie Peng
Y
Yanxuan Fu
H
Hao Zhang
M
Ming Xiao *
DOI:10.1002/adom.71507delete
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摘要

摘要

En 中文
结构色源于微/纳米结构中的波长选择性散射。结构有序性决定了颜色的亮度、饱和度和虹彩效应,但目前尚无通用的框架来量化结构有序性。结构有序性如何定量影响结构色材料的反射和吸收仍不清楚。在此,我们共组装二元二氧化硅纳米颗粒以调节有序度,并量化其对反射和吸收的影响。通过改变组分和颗粒尺寸比,我们可以将有序度从长程晶态调整到短程有序状态。结合反射光谱学与超小角X射线散射测量,我们建立了一个实验有序参数,以区分长程有序、过渡和短程有序区域。将结构有序性与光学吸收相关联发现,增加无序度会增强散射事件并导致更大的吸收。此外,增大颗粒尺寸进一步通过减少传输平均自由程来增加吸收。这项工作表明,颗粒尺寸比工程是一种有效的方法来调节结构有序性,为设计新型光子材料提供了一种通用的方法,用于定制颜色外观和吸收效率。
Keyword:
absorption
degree of order
photonic crystals
photonic glasses
structural colors

期刊

Advanced Optical Materials 封面图
Advanced Optical Materials
IF:
7.2
论文数:
8.8K
被引数:
4.6W

机构

S
sichuan university
学者数:
12.1W
论文数: 7.8W
被引数: 100
C
chinese academy of sciences
学者数:
56.7W
论文数: 45.0W
被引数: 704
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