Optical characterization of single plasmonic nanoparticles.
Optical characterization of single plasmonic nanoparticles.
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DOI：
10.1039/c4cs00131a
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发表时间：
2015-01-07
影响因子：
46.2
通讯作者：
Link S
中科院分区：
文献类型：
--
作者：
Olson J;Dominguez-Medina S;Hoggard A;Wang LY;Chang WS;Link S
本教程综述了用各种单粒子光谱技术研究的等离子体纳米粒子的光学性质。金属纳米颗粒的表面等离子体共振与纳米颗粒的几何形状和环境密切相关，即使是相对较小的偏差也会引起光谱的显著变化。由于化学制备的纳米粒子的尺寸和形状的分布是固有的，因此这种样品的总体光谱被不均匀地加宽，隐藏了单个纳米粒子的属性。使用单粒子光谱学一次测量一个纳米颗粒的能力可以克服这一限制。本文综述了不同的稳态单粒子光谱技术，为等离子体纳米粒子的光谱特性提供了详细的见解。
This tutorial review surveys the optical properties of plasmonic nanoparticles studied by various single particle spectroscopy techniques. The surface plasmon resonance of metallic nanoparticles depends sensitively on the nanoparticle geometry and its environment, with even relatively minor deviations causing significant changes in the optical spectrum. Because for chemically prepared nanoparticles a distribution of their size and shape is inherent, ensemble spectra of such samples are inhomogeneously broadened, hiding the properties of the individual nanoparticles. The ability to measure one nanoparticle at a time using single particle spectroscopy can overcome this limitation. This review provides an overview of different steady-state single particle spectroscopy techniques that provide detailed insight into the spectral characteristics of plasmonic nanoparticles.