Graduate Institute of Applied Physics, National Taiwan University, Taipei 106, Taiwan.
ACS Nano. 2012 Jun 26;6(6):5190-7. doi: 10.1021/nn300947n. Epub 2012 May 2.
Using a femtosecond laser, we have transformed the laser-direct-writing technique into a highly efficient method that can process AgO(x) thin films into Ag nanostructures at a fast scanning rate of 2000 μm(2)/min. The processed AgO(x) thin films exhibit broad-band enhancement of optical absorption and effectively function as active SERS substrates. Probing of the plasmonic hotspots with dyed polymer beads indicates that these hotspots are uniformly distributed over the treated area.
我们使用飞秒激光，将激光直写技术转化为一种高效的方法，能够以 2000μm²/min 的快速扫描速率将 AgO(x) 薄膜加工成 Ag 纳米结构。所加工的 AgO(x) 薄膜表现出宽频带增强的光吸收，并有效地作为活性 SERS 基底。用染色聚合物珠探测等离子体热点表明，这些热点在处理区域内均匀分布。
