Investigation of excitation of plasmonic nano-particles by emitting molecules

通过发射分子激发等离子体纳米粒子的研究

• 批准号: 266522012
• 负责人: Dr.-Ing. Thomas Wriedt
• 金额: --
• 依托单位: Fachgebiet Mechanische Verfahrenstechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/266522012?language=en
• 关键词: Investigation; excitation; plasmonic; nano; particles

Excitation of plasmonic nano-particles by emitting dipoles is encountered in various applications such as Surface Enhanced Fluorescence/Raman scattering. To develop essentially new principles for the design of novel sensor concepts based on dipole excitation light scattering tools are needed for simulation. For various reasons the application of common and standard light scattering simulation methods such as Discrete Dipole Approximation (DDA) or Finite Difference Time Domain (FDTD) would be problematic and computationally very expensive especially if the nano-particles are positioned on a plane surface. Within this project we like to develop the Discrete Sources Method to the case of nano-particle excitation by an electric dipole of any orientation deposited in the vicinity of a nano-particle in the presence of a multilayered structure such that we can simulate the inaction between surface plasmon resonance, plasmonic particles and an excited molecule represented by a dipole. The method will be developed, validated and finally used to investigate the influence of the geometrical parameters on the average enhancement factor for a molecule near a plasmonic particle.

在诸如表面增强荧光/拉曼散射的各种应用中遇到通过发射偶极子激发等离子体纳米颗粒。为了开发用于基于偶极激发的新颖传感器概念的设计的基本上新的原理，需要光散射工具进行模拟。由于各种原因，诸如离散偶极近似（DDA）或时域有限差分（FDTD）的普通和标准光散射模拟方法的应用将是有问题的，并且计算上非常昂贵，特别是如果纳米颗粒位于平面表面上。 在这个项目中，我们想开发离散源方法的情况下，纳米粒子的激发由沉积在纳米粒子附近的任何取向的电偶极子在一个多层结构的存在下，这样我们就可以模拟表面等离子体共振，等离子体激元粒子和由偶极子代表的激发分子之间的不活动。该方法将被开发，验证，并最终用于调查的平均增强因子的分子附近的等离子体粒子的几何参数的影响。

项目成果

The optical theorem for local source excitation of a particle near a plane interface

平面界面附近粒子局域源激发的光学定理

• DOI: 10.1016/j.jqsrt.2015.07.002
• 发表时间: 2015
• 期刊: Journal of Quantitative Spectroscopy & Radiative Transfer
• 影响因子: 2.3
• 作者: Eremin Yu;Wriedt T.
• 通讯作者: Wriedt T.

Generalization of the Optical Theorem to the multipole source excitation

光学定理对多极源激发的推广

• DOI: 10.1016/j.jqsrt.2016.08.011
• 发表时间: 2016
• 期刊: Journal of Quantitative Spectroscopy & Radiative Transfer
• 影响因子: 2.3
• 作者: Eremin Yu;Wriedt T.
• 通讯作者: Wriedt T.

Discrete Sources Method for light scattering analysis of non-axisymmetric features of a substrate

用于基板非轴对称特征光散射分析的离散源方法

• DOI: 10.1016/j.cpc.2015.08.009
• 发表时间: 2016
• 期刊: Comput. Phys. Commun.
• 作者: Eremin Yu;Wriedt T.
• 通讯作者: Wriedt T.