双光子聚合作为一种潜在的制造工具,在自然界中发现复杂结构的仿生工程

G. Zyla, A. Kovalev, C. Esen, A. Ostendorf, S. Gorb
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引用次数: 3

摘要

摘要我们报道了通过双光子聚合成功地使用三维(3D)打印来在微纳米尺度上设计优化的分层组成的表面结构。这种印刷结构的层次结构的灵感来自于在蓝翅蝶属的上翅表面发现的结构。通过这种方式,纳米结构和生物体的蓝色被模仿,但在仿生表面上获得的彩虹色较少。与生物表面结构一样,打印的表面结构也表现出紊乱的特征。结果,由仿生结构产生的蓝色显示出与大闪蝶翅膀相似的角度不敏感光学特性。此外,3D打印技术具有很大的设计自由度和简单的工作流程,可以在不改变纳米尺度子结构尺寸的情况下在微观尺度上制造不同的结构。这样,就有可能设定对角度不敏感的颜色出现在观察者面前的方向。利用扫描电镜对生物表面结构和仿生表面结构的形貌进行了分析和比较。生物和工程样品的光学特性是用角度分辨光谱测定的。此外,还研究了大闪蝶仿生表面和翅上表面在不同液体中的着色情况。并对实验结果进行了比较,讨论了仿生表面的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Two-photon polymerization as a potential manufacturing tool for biomimetic engineering of complex structures found in nature
Abstract. We report on the successful use of three-dimensional (3D) printing by two-photon polymerization to engineer optimized hierarchically composed surface structures at the micro- and nanoscale. The hierarchical composition of the printed structures was inspired by those found on the upper wing surface of blue-winged butterflies from the genus Morpho. In this way, the nanostructures and blue coloration of the organisms was mimicked, but less iridescence was achieved for biomimetic surfaces. Like the biological surface structures, the ones printed exhibited disorders characteristics. As a result, the blue colors generated by biomimetic structures displayed angle-insensitive optical properties similar to those of the Morpho wings. In addition, the great design freedom and simple workflow of the 3D printing technique enabled the fabrication of different structures at the microscale without modifying the dimension of the substructures at the nanoscale. Thus, it was possible to set the direction in which angle-insensitive coloration appeared to an observer. The morphology of biological and biomimetic surface structures was analyzed and compared using scanning electron microscopy. The optical properties of biological and engineered specimens were determined using angle-resolved spectroscopy. Furthermore, the coloration of biomimetic surfaces and the upper wing surface of Morpho butterfly was studied in different liquids. The results were compared, and potential application for biomimetic surfaces was discussed.
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