Electron energy-loss spectroscopy on three dimensional plasmonic nanostructures

三维等离子体纳米结构的电子能量损失谱

• 批准号: 289570250
• 负责人: Dr. Stephan Irsen
• 金额: --
• 依托单位: Physikalisches Institut
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/289570250?language=en
• 关键词: Electron; energy; loss; spectroscopy; three

In the proposed project, we intend to establish electron energy loss spectroscopy (EELS) as a versatile characterization method for the plasmonic near-field of three dimensional metallic nanostructures. For this purpose, we will perform proof-of-principle studies on a number of different plasmonic systems whose specific properties result from the three-dimensional shape of the structures or depend critically on their thickness. In contrast to most previous experiments, in which the nanostructures have been examined with the electron beam only from a single direction, we will use angular resolved EELS to probe different vector components of the plasmonic near-field. The combination of spatially resolved spectroscopy with EELS and optical far-field spectroscopy will allow us to trace back the optical properties of the three-dimensional plasmonic systems to their specific near-field distributions.

在这个项目中，我们打算建立电子能量损失谱（EELS）作为一种通用的三维金属纳米结构等离子体近场的表征方法。为此，我们将对一些不同的等离子体系统进行原理验证研究，这些系统的特定属性来自结构的三维形状或严重依赖于它们的厚度。在大多数以前的实验中，其中的纳米结构已被检查与电子束只从一个方向，我们将使用角分辨EELS探测不同的矢量分量的等离子体近场。空间分辨光谱与EELS和光学远场光谱的结合将使我们能够追溯三维等离子体系统的光学特性到其特定的近场分布。

项目成果

Near-field study on the transition from localized to propagating plasmons on 2D nano-triangles.

二维纳米三角形上从局域等离子体激元到传播等离子体激元转变的近场研究

• DOI: 10.1364/oe.25.016947
• 发表时间: 2017
• 期刊: Optics express
• 影响因子: 3.8
• 作者: T. Weber;T. Kiel;S. Irsen;K. Busch;S. Linden
• 通讯作者: S. Linden

Freestanding metasurfaces for optical frequencies.

• DOI: 10.1364/ol.44.002105
• 发表时间: 2019-02
• 期刊: Optics letters
• 影响因子: 3.6
• 作者: M. Prämassing;T. Leuteritz;H. Schill;A. Faßbender;Stephan Irsen;Stefan Linden