Light scattering by plasmonic particles and clusters

等离子体粒子和团簇的光散射

• 批准号: 243782236
• 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: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/243782236?language=en
• 关键词: Light; scattering; plasmonic; particles; clusters

In 2011, based on computer simulation analysis of light scattering, the phenomenon of Extreme Transformation (ET) of an evanescent field by a nanodimensional inhomogeneity located within a thin metal film deposited on a glass prism was revealed by our research team. The ET consists in sharp (by several orders of magnitude) increase of scattered intensity with a variation of the incident angle of the exciting plane wave. We believe that the ET phenomenon will help to develop essentially new principles of designing of devices used for biological molecular structures analysis, superresolving optical microscopes, developing optical antennas, liquid crystal displays, compact biosensors and gas analyzers.During the research stay the collaborating partner Prof. Yuri Eremin Moscow State University, Moscow in Bremen we plan to generalize the developed light scattering method Discrete Sources Method (DSM) to be enable examination ET phenomenon with new features. We will investigate the sensitivity of the scattering characteristics to the shape of the plasmonic particles also in the frequency domain. The influence of the local inhomogeneous environment of the particle on the scattering characteristics will be simulated. The DSM theory will be extended to simulate clusters of strongly interacting plasmonic particles deposited on a multilayered substrate.

2011年，基于光散射的计算机模拟分析，我们的研究团队揭示了位于玻璃棱镜上沉积的薄金属膜内的纳米尺度不均匀性引起的倏逝场的极端变换（ET）现象。的ET包括在急剧增加（由几个数量级）的散射强度与激发平面波的入射角的变化。我们相信，ET现象将有助于开发用于生物分子结构分析的设备的设计，超分辨光学显微镜，开发光学天线，液晶显示器，紧凑型生物传感器和气体分析仪的新原理。在研究期间，合作伙伴尤里Eremin教授莫斯科州立大学，在不莱梅的莫斯科，我们计划推广已开发的光散射方法离散源方法（DSM），使检查ET现象的新功能。我们将调查的散射特性的等离子体粒子的形状的灵敏度也在频域中。模拟了粒子所处的局部非均匀环境对散射特性的影响。DSM理论将扩展到模拟集群的强烈相互作用的等离子体粒子沉积在多层基板上。

项目成果

Analysis of plasmonic resonances of two paired noble metal spheroids via the discrete sources method

通过离散源方法分析两对贵金属球体的等离子体共振

• DOI: 10.1080/09500340.2013.794393
• 发表时间: 2013
• 期刊: Journal of Modern Optics
• 影响因子: 1.3
• 作者: Eremin;Grishina;Eremina;Wriedt
• 通讯作者: Wriedt

Analysis of scattered field enhancement in the evanescent wave area based on the Discrete Sources Method

• DOI: 10.1016/j.jqsrt.2013.12.012
• 发表时间: 2014-10
• 期刊: Journal of Quantitative Spectroscopy & Radiative Transfer
• 影响因子: 2.3
• 作者: Y. Eremin;T. Wriedt

New scheme of the Discrete Sources Method for light scattering analysis of a particle breaking interface

• DOI: 10.1016/j.cpc.2014.08.010
• 发表时间: 2014-12
• 期刊: Comput. Phys. Commun.
• 作者: Y. Eremin;T. Wriedt