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Analysis of optical and wetting properties of a biomimetic anti-reflective surface for practical application
Journal of Mechanical Science and Technology ( IF 1.6 ) Pub Date : 2021-07-22 , DOI: 10.1007/s12206-021-0727-5
Ji Seong Choi 1 , Joon Hyung An 1 , Seong Min Kang 1 , Jong-Kwon Lee 2 , Se Jin Ku 3
Affiliation  

In this study, moth-eye-inspired structures (MISs), which improve optical performance of surfaces, were developed to enhance light efficiency in various optical fields. As the polymer-based soft lithography process can easily optimize MIS materials and nanostructures, 12 MIS/inverse MIS (IMIS) surfaces of 300, 500, and 1000 nm composed of polyurethaneacrylate (PUA) and polydimethylsiloxane (PDMS) polymers were fabricated, and a thin octafluorocyclobutane (C4F8) layer was deposited on the surfaces to reduce their surface energies. The results showed that the 300-nm PDMS-MIS showed excellent optical properties with 94.44 % transmittance and 3.28 % reflectance. Additionally, two theoretical phenomena, the diffraction effect and double-slit diffraction, were experimentally demonstrated using three single-wavelength lasers. Subsequently, contact-angle measurements demonstrated all MIS/IMIS surfaces to possess hydrophobic and superhydrophobic properties, which can protect devices from outdoor liquids. Finally, we confirmed the applicability of MIS by attaching it to a cell phone display and an ITO glass, which is used as a substrate in various optical instruments.



中文翻译:

用于实际应用的仿生抗反射表面的光学和润湿性能分析

在这项研究中,开发了可提高表面光学性能的蛾眼结构(MIS),以提高各种光学领域的光效率。由于基于聚合物的软光刻工艺可以轻松优化 MIS 材料和纳米结构,因此制造了由聚氨酯丙烯酸酯 (PUA) 和聚二甲基硅氧烷 (PDMS) 聚合物组成的 300、500 和 1000 nm 的 12 个 MIS/反向 MIS (IMS) 表面,并且稀八氟环丁烷 (C 4 F 8) 层沉积在表面上以降低其表面能。结果表明,300-nm PDMS-MIS 显示出优异的光学性能,透射率为 94.44%,反射率为 3.28%。此外,使用三个单波长激光器通过实验证明了两种理论现象,衍射效应和双缝衍射。随后,接触角测量表明所有 MIS/IMS 表面都具有疏水和超疏水特性,可以保护设备免受室外液体的影响。最后,我们通过将 MIS 贴在手机显示屏和 ITO 玻璃上来确认其适用性,ITO 玻璃在各种光学仪器中用作基板。

更新日期:2021-07-22
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