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首页> 外文期刊>Advanced Functional Materials >Visualization of UV by Nanopatterned Down-Shifting Materials Mimicking Human Retinal Cone Cells
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Visualization of UV by Nanopatterned Down-Shifting Materials Mimicking Human Retinal Cone Cells

机译：通过模仿人类视网膜锥细胞的纳米图案下移材料可视化紫外线

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摘要

The conversion of invisible ultraviolet (UV) light to visible light by down-shifting (DS) materials has a variety of important applications in the fields of optoelectronics and photonics. The ability to control emission colors as a function of the wavelength of incident UV light would significantly advance scientific research and technological applications. A novel strategy for UV visualization is demonstrated that employs nanoimprint lithography combined with a sol-gel process. The principles of trichromacy of human vision are applied; three DS materials sensitive to three different ranges of UV light are nanopatterned to mimic the three types of cone cells in the human retina. Each DS material then emits a distinctive color that can be recognized by each type of cone cells for visualization. The nanopatterned structure significantly intensifies the light emission by Mie scattering and spatially separates the three DS materials, thereby minimizing unwanted optical interference among them. The deliberately designed triple-nanopatterned DS materials exhibit various emission colors ranging from green, to orange, to pink depending on the wavelength of the incident UV light. The current work would contribute to the development of novel strategies for multicolor tunable emission that may lead to innovative applications.
机译：通过降档（DS）材料将不可见的紫外线（UV）转换为可见光在光电和光子学领域具有许多重要的应用。根据发射的紫外线的波长来控制发射颜色的能力将大大促进科学研究和技术应用。展示了一种新颖的紫外线可视化策略，该策略采用纳米压印光刻技术与溶胶-凝胶工艺相结合。运用了人类视觉的三色性原理；可以对三种对三种不同范围的紫外线敏感的DS材料进行纳米图案化处理，以模仿人类视网膜中三种类型的视锥细胞。然后，每种DS材料都会发出独特的颜色，每种类型的视锥细胞都可以识别该颜色以进行可视化。纳米图案结构通过Mie散射显着增强了光发射，并在空间上分离了三种DS材料，从而将它们之间的不必要的光学干扰降至最低。经过精心设计的三重纳米DS材料表现出各种发射颜色，从绿色到橙色到粉红色，具体取决于入射紫外线的波长。当前的工作将有助于开发可导致创新应用的多色可调发射的新策略。

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