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

亚纳米深度分辨率和单个剂可视化,通过倾斜合的多切片电子图形学实现

Zehao Dong¹, Yang Zhang¹, Chun-Chien Chiu²

¹State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing, China.

Nature communications

|January 31, 2025

概括

这项研究引入了一种新的3D成像方法,使用电子图像学来实现原子结构的亚纳米深度分辨率. 该技术增强了材料科学中的多潘特检测和可视化.

科学领域:

材料科学材料科学材料科学
物理物理学物理
化学化学化学

背景情况:

在现实空间,3D原子成像非常重要,但具有挑战性.
目前的电子显微镜方法提供有限的深度分辨率 (2-3 nm).
原子电子断层扫描需要大量的样本倾斜和投射.

研究的目的:

为了提高3D原子成像中的深度分辨率.
为了能够可视化个别的补充剂和格子扭曲.
为广泛使用的电子显微镜开发一种实用的技术.

主要方法:

多切片电子图解的扩展.
使用了一些小角度投影.
与混合像素探测器和高性能计算相结合.

主要成果:

实现了超过三倍的深度分辨率改进,达到亚纳米尺度.
保持了对轻原子和重原子的高分辨率.
在Ca2Co2O5和晶格扭曲中成功可视化稀释的普拉西奥迪辅助剂.

结论:

开发的技术显著提高了3D原子成像能力.
它提供了一条通往原子级深度分辨率的途径.
这种方法适用于广泛的材料和剂研究.

更多相关视频

Picometer-Precision Atomic Position Tracking through Electron Microscopy

Picometer-Precision Atomic Position Tracking through Electron Microscopy

Published on: July 3, 2021

Preparation and Observation of Thick Biological Samples by Scanning Transmission Electron Tomography

Preparation and Observation of Thick Biological Samples by Scanning Transmission Electron Tomography

Published on: March 12, 2017

相关概念视频

Electron Microscope Tomography and Single-particle Reconstruction

Electron Microscope Tomography and Single-particle Reconstruction

Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...

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...