Golden inverse opals additionally decorated with 15.5 ± 1.5 nm gold nanoparticles are proposed as reusable substrates for surface-enhanced Raman spectroscopy (SERS). Gold nanoparticles are found to be uniformly distributed making an input of enhancement ability of spectral characteristics with the colloidal system by ten times. This technique is demonstrated to be efficient in spectral features tuning via a combination of different gold derivatives. Two lasers served for resonant, pre-resonance, and non-resonance signal analyses. Reusability of the Au-Au composite films is demonstrated for methylene blue as a stable dye deposited onto the SERS chips using a 632.8-nm resonant laser for exciting. The enhancement factor for methylene blue achieved 108 and for rohodamine 6G was of about 105. It was observed that rinsing of Au-Au nanocomposite SERS films with distilled water and heating up to 100 °C followed by dropping on a new portion of Au colloids onto the platform regenerates the substrates.

中文翻译：

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用于表面增强拉曼光谱的具有反蛋白石结构的 Au-Au 复合材料

额外装饰有 15.5 ± 1.5 nm 金纳米粒子的金色反蛋白石被提议作为表面增强拉曼光谱 (SERS) 的可重复使用基材。发现金纳米颗粒均匀分布，使胶体体系的光谱特性增强能力提高了十倍。该技术通过不同金衍生物的组合在光谱特征调谐方面被证明是有效的。两个激光器用于谐振、预谐振和非谐振信号分析。Au-Au 复合膜的可重复使用性证明了亚甲蓝作为一种稳定的染料沉积在 SERS 芯片上，使用 632.8-nm 共振激光器进行激发。亚甲蓝的增强因子达到 108，罗丹明 6G 的增强因子约为 105。