Low cost SERS substrates are imperative to develop single use, point of care diagnostics. In the quest for such SERS substrates, we developed a wet chemical method to produce Cu nanowire like networks. The oriented attachment and coalescence observed in these network like nanostructures infer their aggregation behavior that ultimately results in the generation of exciting inter-particle junctions. The hot spots formed by these inter-particle junctions certainly increases the electromagnetic enhancement. SERS activity of these substrates is evaluated using methylene blue (MB) molecule and found activity enhancement by a factor of 1.1×10⁴.

中文翻译：

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聚集诱导的，甲醛定制的纳米线状铜网络及其SERS活性

低成本SERS基材对于开发一次性使用的即时诊断至关重要。为了寻求此类SERS基板，我们开发了一种湿化学方法来生产类似铜纳米线的网络。在这些网络（如纳米结构）中观察到的定向附着和聚结可推断其聚集行为，最终导致产生令人兴奋的粒子间连接。这些粒子间结所形成的热点肯定会增强电磁强度。使用亚甲基蓝（MB）分子评估了这些底物的SERS活性，发现其活性提高了1.1×10 ⁴倍。