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Broadband Optical Antireflection of Plastic Optics by Molded Stochastic Sub-wavelength Structures

机译：模制随机亚波长结构对塑料光学器件的宽带光学减反射

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摘要

Stochastic sub-wavelength structures with lateral sizes of below 100 nm and heights of about 250 nm were produced on polymer surfaces by plasma treatment. From these master samples, an embossing nickel tool was manufactured, which, in turn, was used to replicate the master surface form by hot embossing in plastic materials. The geometry of the produced nanos-tructures was quantified by scanning electron microscopy. The optical surface reflectance of both the master and the replicated samples were measured in the visible wavelength range.rnA significant reduction of optical reflectance from the expected 4% of untreated surfaces, to less than 0.5% of the master samples, and to values between 1% and 2% of the replicated samples was achieved. The optical reflectance of the stochastic structures was calculated by a finite element-based rigorous solution of the Maxwell equations. The modeled results show a good agreement with experimental data.
机译：通过等离子体处理在聚合物表面上产生横向尺寸小于100nm且高度约250nm的随机亚波长结构。从这些母材样本中，制造出一种压印镍工具，然后将其用于通过在塑料材料中进行热压印来复制母材表面形式。通过扫描电子显微镜定量所产生的纳米结构的几何形状。在可见光波长范围内测量原版和复制样品的光学表面反射率.rn光反射率从未处理的预期表面的4％显着降低到低于原版样品的0.5％，并且降低到1之间获得了1％和2％的复制样品。随机结构的光学反射率是通过基于麦克斯韦方程的有限元严格解来计算的。建模结果与实验数据吻合良好。

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  • 来源
    《Plasma processes and polymers》 |2009年第12期|840-847|共8页
  • 作者

    Gerd Ehret; Egbert Buhr; Stefan Gaebler; Hans-Martin Bitzer;

  • 作者单位

    Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany;

    Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany;

    Fresnel Optics GmbH, Flurstedter Marktweg 13, 99510 Apolda, Germany;

    Fresnel Optics GmbH, Flurstedter Marktweg 13, 99510 Apolda, Germany;

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