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Replication fidelity assessment of large area sub-μm structured polymer surfaces using scatterometry.

机译:使用散射仪对大面积亚μm结构聚合物表面的复制保真度评估。

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摘要

The present study addresses one of the key challenges in the product quality control of transparent structured polymer substrates, the replication fidelity of sub-μm structures over a large area. Additionally the work contributes to the development of new techniques focused on in-line characterization of large nanostructured surfaces using scatterometry. In particular an approach to quantify the replication fidelity of high volume manufacturing processes such as polymer injection moulding is presented. Both periodic channels and semi-spherical structures were fabricated on nickel shims used for later injection moulding of Cyclic-olefin-copolymer (COC) substrate were the sub-μm features where ultimately transferred. The scatterometry system was validated using calibrated atomic force microscopy measurements and a model based on scalar diffraction theory employed to calculate the expected angular distribution of the reflected and the transmitted intensity for the nickel surfaces and structured COC and, respectively.
机译:本研究解决了透明结构化聚合物基材的产品质量控制中的关键挑战之一,即大面积亚微米结构的复制保真度。此外,这项工作还有助于开发新技术,该技术专注于使用散射法在线表征大型纳米结构表面。特别地,提出了一种量化诸如聚合物注射成型的大批量制造过程的复制保真度的方法。周期性通道和半球形结构均在镍垫片上制造,用于后来的环状烯烃共聚物(COC)基板注模成型,是最终转移到亚微米级的特征。使用校准的原子力显微镜测量和基于标量衍射理论的模型对散射测量系统进行了验证,该模型用于分别计算镍表面和结构化COC的反射强度和透射强度的预期角度分布。

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