The surface enhanced Raman spectroscopy (SERS) substrates were fabricated by many methods including the AAO molding and high-cost nanolithography-etching-deposition process. In this article, we have demonstrated the SERS substrate fabricated with silver nanoparticles (Ag-NP) electroless deposition on highly ordered dense hexagonal arrays of UV curable resin nanorods (R-NR) arrays which was reproducible from a precisely controlled anodic aluminum oxide (AAO) template. This method could improve the non-flatness induced defect problem in the conventional nanoimprinting technique and form high-quality duplications of nanometer templates. The periodic hierarchical double-structured nanorods arrays with small nanorods (diameter about 30~40 nm) in large nanorods (diameter about 100~110 nm) were obtained by the UV curable resins molding from the AAO template. Two kinds of electroless deposition i.e. self-assembly and ultrasonic vibration methods were performed for Ag-NP formation on R-NR. The enhancement factors of SERS using 10^–5 M methylene blue (MB) as probing molecules were 10⁴~10⁶ for the self-assembled method and 10⁵~10⁷ for the ultrasonic vibration one, respectively. This was because the ultrasonic vibration deposition could result in Ag nanorods arrays with higher regularity and contact area than the self-assembly one.

中文翻译：

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阳极氧化铝模板在树脂纳米棒阵列上通过银纳米颗粒增强表面拉曼光谱性能

表面增强拉曼光谱（SERS）衬底是通过许多方法制造的，包括AAO成型和高成本的纳米光刻蚀刻沉积工艺。在本文中，我们已经证明了用银纳米颗粒（Ag-NP）化学沉积在高度可固化的可紫外固化树脂纳米棒（R-NR）阵列的密集六边形阵列上制造的SERS基板，该阵列可通过精确控制的阳极氧化铝（AAO）复制） 模板。该方法可以改善传统纳米压印技术中非平坦性引起的缺陷问题，并形成纳米模板的高质量复制品。通过AAO模板成型的紫外光固化树脂，得到了在大纳米棒（直径约100〜110nm）中具有小纳米棒（直径约30〜40nm）的周期性分层双层结构纳米棒阵列。为了在R-NR上形成Ag-NP，进行了两种化学沉积，即自组装和超声振动方法。使用10的SERS增强因子^-5中号亚甲蓝（MB）作为探测分子分别为10 ⁴〜10 ⁶的自组装方法和10 ⁵〜10 ⁷的超声波振动之一，分别。这是因为超声振动沉积可能导致Ag纳米棒阵列比自组装的纳米棒阵列具有更高的规则性和接触面积。