Effect of Ag nanoclusters deposited with magnetron sputtering on laser-induced breakdown spectroscopy enhancement
Effect of Ag nanoclusters deposited with magnetron sputtering on laser-induced breakdown spectroscopy enhancement
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磁控溅射沉积银纳米团簇对激光诱导击穿光谱增强的影响
DOI：
10.1016/j.sab.2019.05.001
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Hu Bitao
中科院分区：
文献类型：
--
作者：
Shen Jie;Wu Keyan;Cao Da;Wang Jijin;Hu Bitao
在本文中，我们报告的实验观察银纳米团簇的生长对纳米粒子增强激光诱导击穿光谱（NELIBS）的影响。在这项工作中，我们研究了LIBS的发射强度的变化，在390.55 nm的波长的Si I线的例子，作为银纳米团簇覆盖的函数。发射强度在开始饱和之前最初增加，然后随着Ag纳米团簇覆盖率的增加而减小。所得的Ag团簇显示出红移的等离子体共振峰与增加团簇覆盖。原子力显微镜（AFM）被用来提供信息的簇的大小和形状的变化。此外，进行了三维时域有限差分（FDTD）模拟，以估计电场增强数值。
In this paper, we report experimental observation of the influence of Ag nanoclusters growth on nanoparticle enhanced laser-induced breakdown spectroscopy (NELIBS). In this work, we studied changes in the emission intensity of LIBS, on the example of Si I line at the wavelength of 390.55 nm, as a function of the silver nanoclusters coverage. The emission intensity initially increases before beginning to saturate, and then decreases with increasing Ag nanoclusters coverage. The obtained Ag clusters show a red-shifted plasmon resonance peak with increasing cluster coverage. Atomic force microscopy (AFM) was used to provide information changes in the cluster size and shape. Additionally, a 3D finite-difference-time-domain (FDTD) simulation was performed to estimate the electric field enhancement numerically.