We report a batch preparation of mm-scale 3D Ag hetero-nanoclusters which exhibit an excellent surface plasmon resonance ability via facile laser metallurgy. Under laser irradiation, the porous AgI-based coordination network crystals were instantly converted into 3D graphite-encapsulated Ag hetero-nanoclusters with uniform sizes and gaps in several seconds. The obtained hetero-nanoclusters exhibited superior 3D confocal laser energy utilization compared with the other 0D, 1D and 2D SERS substrates, solving the bottleneck caused by laser focusing deviation in the SERS active depth. The mass-produced SERS devices were ultra-sensitive for the detection of life and industrial organic pollutants in terms of low detection and enriched capacity.

中文翻译：

---

用于在空气中批量制备毫米级3D银/石墨异质团簇的激光冶金路线

我们报告其表现出优异的表面等离子共振的能力毫米尺度三维银杂纳米团簇的制备批次通过简便激光冶金。在激光照射下，基于多孔AgI的配位网络晶体在几秒钟内立即转变为尺寸和间隙均匀的3D石墨包裹的Ag异质纳米簇。与其他0D，1D和2D SERS基板相比，所获得的异质纳米簇具有更高的3D共焦激光能量利用率，解决了SERS有效深度中激光聚焦偏差引起的瓶颈。大规模生产的SERS设备对检测生命和工业有机污染物具有超高的灵敏度，检测效率低且容量大。