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首页> 外文会议>Advances in Optical Thin Films >Modeling and characterizing thin film nanostructures for ultra-hydrophobic surfaces with controlled optical scatter
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Modeling and characterizing thin film nanostructures for ultra-hydrophobic surfaces with controlled optical scatter

机译：具有可控光学散射的超疏水表面的薄膜纳米结构的建模和表征

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We have developed a novel approach to design ultra-hydrophobic surfaces with optical quality. The nanostructure necessary for the functional effect is realized through enhanced nanoroughness of optical thin films. At the same time, the optical appearance must not be disturbed by scattering from the roughness. We have found that through wide-scale roughness analysis, applying white light interferometry, AFM and STM, and subsequent data reduction the roughness characteristics can be directly related to the wetting properties. As, on the other hand, vector scattering theories connect the roughness properties with scatter losses, a formalism has been established, where both the wetting properties and scattering behavior can be expressed within the same "language". Using this tool, the optical thin film design and the surface nanoroughness can be tailored to fulfill demands on wetting properties as well as on sufficient low scatter levels. For the deposition of high index single layers on Borofloat 33 substrates, qualified substrate-fihn-combinations are predicted by "virtual" coating simulations. Experiments with single oxide layer as test coatings yielded surfaces with a high water contact angle and light scatter losses below defined scatter thresholds.
机译：我们已经开发出一种新颖的方法来设计具有光学质量的超疏水表面。通过提高光学薄膜的纳米粗糙度，可以实现功能效果所需的纳米结构。同时，不得从粗糙度的散射中干扰光学外观。我们发现，通过大范围的粗糙度分析，应用白光干涉法，AFM和STM，以及随后的数据减少，粗糙度特性可以直接与润湿性能相关。另一方面，由于矢量散射理论将粗糙度特性与散射损耗联系在一起，因此建立了形式主义，其中可以在同一“语言”中表示润湿特性和散射行为。使用该工具，可以调整光学薄膜的设计和表面纳米粗糙度，以满足对润湿性以及足够低的散射水平的要求。对于在Borofloat 33基材上沉积高折射率单层，可以通过“虚拟”涂层模拟预测合格的基材-薄膜组合。用单个氧化物层作为测试涂层的实验产生的表面具有高的水接触角，并且光散射损耗低于定义的散射阈值。

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