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.

在拟议的项目中，我们打算建立电子能量损失光谱（EELS）作为三维金属纳米结构等离子体近场的通用表征方法。为此，我们将对许多不同的等离子体系统进行原理验证研究，这些系统的具体属性取决于结构的三维形状或主要取决于其厚度。与之前的大多数实验相比，仅使用电子束从单一方向检查纳米结构，我们将使用角分辨 EELS 来探测等离子体近场的不同矢量分量。空间分辨光谱与 EELS 和光学远场光谱的结合将使我们能够将三维等离子体系统的光学特性追溯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