无序金聚合物薄膜结构的SAXS理论分析
Theoretical SAXS Analysis of Structures of Disordered Gold Polymer Thin Films
摘要：
近年来，人们利用小角X射线散射（SAXS）对无序金聚合物（PMMA-Au）薄膜的结构进行了研究。我们用分形SAXS理论分析了这些实验结果。该薄膜由聚合物嵌入的金纳米团簇形成，并通过非常低能量的金离子注入到PMMA（聚甲基丙烯酸甲酯）中而制成。复合膜跨越（与剂量变化）从电绝缘到导电制度的过渡，从根本上和技术上的利益范围。我们发现很好的协议与理论，并表明，PMMA-Au膜具有单分散或多分散特性取决于注入的离子剂量。关键词：SAXS理论，分形，逾渗，相关效应。
英文摘要：
Recently the structure of disordered gold-polymer(PMMA-Au) thin films have been measured using Small Angle X-ray Scattering (SAXS). We have analyzed these experimental results using the fractal SAXS theory. The films are formed of polymer-embedded gold nanoclusters and were fabricated by very low energy gold ion implantation into PMMA (polymethylmethacrylate). The composite films span (with dose variation) the transition from electrically insulating to electrically conducting regimes, a range of interest fundamentally and technologically. We find excellent agreement with theory, and show that the PMMA-Au films have monodispersive or polydispersive characteristics depending on the implanted ion dose. Keywords: SAXS theory, Fractality, percolation, correlation effects.
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