替代性等离子材料用于光增强
Stavros Athanasiou1, Olivier J F Martin1
1Nanophotonics and Metrology Laboratory (NAM), Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne 1015, Switzerland.
The journal of physical chemistry. C, Nanomaterials and interfaces
|November 6, 2024
概括
化半导体提供了替代的等离子材料,但由于吸收,其光增强能力比贵金属弱. 然而,在特定环境下,红外染料可以实现合理的增强.
科学领域:
- 塑制剂的使用方法
- 材料科学 材料科学 材料科学
- 量子光学是一种量子光学.
背景情况:
- 贵金属 (金,银) 是用于光增强的已建立的等离子材料.
- 杂半导体正在成为可调节共振的替代等离子体材料.
研究的目的:
- 调查杂半导体对于增强分子光的适用性.
- 将它们的性能与传统的等离子金属进行比较.
主要方法:
- 在平面波照明下研究纳米半导体球体.
- 计算的光增强因子与量子发射器相结合.
- 与黄金和银纳米粒子进行半导体性能比较.
主要成果:
- 半导体由于主导吸收而显著减少光增强.
- 观察到灭的排放,阻碍了增强能力.
- 增强可以用于发射较低的染料和高折射率环境.
结论:
- 与贵金属相比,杂的半导体提供较弱的光增强.
- 现有策略可以弥补吸收损失.
- 对于红外染料,可以实现可行的光增强.
相关概念视频
Photoluminescence: Applications
379
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
379
Super-resolution Fluorescence Microscopy
6.9K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
6.9K
Variables Affecting Phosphorescence and Fluorescence
489
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
489


