相关实验视频

Updated: May 29, 2025

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

升级一个可变温度扫描道显微镜用于纳米尺度光谱显微镜

B Cirera¹, A Sáez-Coronado¹, D Arribas¹

¹Material Science Institute of Madrid (ICMM-CSIC). c/ Sor Juana Inés de la Cruz 3, 28049, Spain.

|February 3, 2025

概括

研究人员升级了一个超高真空扫描探头显微镜用于冷尖端增强光谱显微镜. 这一进步使得表面的纳米级化学和振动分析成为可能,进步了分子电子学和催化研究.

科学领域:

表面科学是一门科学.
频谱学是一种光谱学.
纳米技术纳米技术

背景情况:

尖端增强光谱仪 (TERS,TEPL,STML) 将探针显微镜的分辨率与光学光谱技术结合起来.
现有的系统往往缺乏用于低温,高分辨率光谱显微镜的能力.

研究的目的:

升级一个超高真空可变温度扫描探头显微镜 (UHV-VT-SPM) 用于低温尖端增强光谱显微镜.
为了证明系统对高分辨率化学和振动分析的能力.

主要方法:

集成一个便携式聚焦镜头 (NA=0.45),用于同时收集/注射光.
使用等离子活性探针 (Ag,Au尖端) 来增强光学信号.
在超高温环境中,在低温温度下进行实验.

主要成果:

成功获得了电解发光 (EL),拉曼和TERS光谱.
在Ag{111}上观察C60振动水平,侧面分辨率为2nm.
由于可调节的隙等离子体分布,从C60检测到强烈的反斯托克斯信号.

结论:

升级后的UHV-VT-SPM可实现最先进的空间和光谱分辨率用于表面分析.
该系统促进了在表面化学,催化和分子电子学方面的高级研究.
该设计为纳米尺度光谱研究提供了新的可能性.

关键词:

在金属3D打印中使用3D打印机.可调节的便携式镜头用于扫描探头光学光谱学.扫描探头显微镜 (SPM) 的使用尖端增强的拉曼光谱学 (TERS)超高真空 (UHV) 镜头持有器

更多相关视频

Author Spotlight: A Machine-Vision Approach to Transmission Electron Microscopy Workflows, Results Analysis and Data Management

Author Spotlight: A Machine-Vision Approach to Transmission Electron Microscopy Workflows, Results Analysis and Data Management

Published on: June 23, 2023

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

相关概念视频

Overview of Microscopy Techniques

Overview of Microscopy Techniques

The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...