材料科学
纳米复合材料
结构着色
色域
制作
光子学
纳米颗粒
激光器
纳米技术
复合材料
光电子学
光学
光子晶体
物理
医学
病理
替代医学
作者
Asiagwu Augustine,Jing Qian,Teodora Faraone,Srikanth Kolagatla,Nadezda Prochukhan,Michael A. Morris,A. Louise Bradley,Larisa Florea,Larisa Florea
出处
期刊:Small
[Wiley]
日期:2024-03-05
标识
DOI:10.1002/smll.202310058
摘要
Abstract Nanocomposite materials have been thoroughly exploited in additive manufacturing, as a means to alter physical, chemical, and optical properties of resulting structures. Herein, nanocomposite materials suitable for direct laser writing (DLW) by two‐photon polymerization are presented. These materials, comprising silica nanoparticles, bring significant added value to the technology through physical reinforcement and controllable photonic properties. Incorporation into acrylate photoresists, via a one‐step fabrication process, enables the formation of complex structures with large overhangs. The inclusion of 150 nm silica nanoparticles in DLW photoresists at high concentrations, allows for the fabrication of composite microstructures that show reflected color, a product of the relative contributions from the quasi‐ordering and random scattering. Using common DLW design parameters, such as slicing distance and structure dimension, a wide gamut of structural color, in solution, using a set concentration of nanoparticles is demonstrated. Numerical modeling is employed to predict the reflected wavelength of the pixel arrays, across the visible spectrum, and this information is used to encode reflected colors into different pixel arrays.
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