Abstract Multiscale structured surfaces are a way to provide advanced, otherwise not attainable functionality on a technical part. Applications of such parts can be manifold, and numerous works have already covered the transfer of natural examples into bio-inspired surfaces or the geometrical and functional metrology of such surfaces. After briefly presenting typical functionalities of multiscale structured surfaces, this keynote paper will focus on the available manufacturing processes and review their capabilities to generate multiscale structured surfaces. To compare such processes, the so-called “multiscality” is defined that characterizes the structured surfaces according to the lateral and vertical extent of the individual stacked elements and is used as a first indicator to assess the difficulty of their manufacture. As the boundaries of what is considered a multiscale structure are diffuse, ranges of low, medium and high multiscality are defined instead. After presenting the state of the art of manufacturing processes currently utilized for the manufacture of (not only multiscale) structured surfaces, this keynote paper summarizes the capabilities of single-step and multi-step/multi-physics approaches for their applicability across different scales and gives an outlook on which processes could potentially become relevant in the future.

中文翻译：

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多尺度结构化表面的制造

摘要 多尺度结构化表面是一种在技术部件上提供先进的、否则无法实现的功能的方法。这些部件的应用可以是多方面的，许多工作已经涵盖了将自然实例转换为仿生表面或此类表面的几何和功能计量。在简要介绍了多尺度结构化表面的典型功能后，本主题演讲将重点介绍可用的制造工艺并回顾其生成多尺度结构化表面的能力。为了比较这些过程，定义了所谓的“多尺度”，它根据单个堆叠元件的横向和垂直范围来表征结构化表面，并用作评估其制造难度的第一个指标。由于被认为是多尺度结构的边界是分散的，因此定义了低、中和高多尺度范围。在介绍了目前用于制造（不仅是多尺度）结构化表面的制造工艺的最新技术水平之后，本主题演讲总结了单步和多步/多物理方法的能力，以及它们在不同尺度上的适用性和展望了哪些流程可能在未来变得相关。