Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

X-ray Imaging01:24

X-ray Imaging

5.5K
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with...
5.5K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

202
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
202
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

355
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
355
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

1.8K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
1.8K
Scanning Electron Microscopy01:07

Scanning Electron Microscopy

4.2K
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...
4.2K
Electron Microscope Tomography and Single-particle Reconstruction01:07

Electron Microscope Tomography and Single-particle Reconstruction

2.4K
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...
2.4K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

A new mri dorsal spinal cord migration pattern may reduce C5 palsy in C3 dome C7 reverse dome open door laminoplasty.

European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·2026
Same author

Single-shot lensless dual-mode ultraviolet imaging based on diffuser speckle modulation.

Optics letters·2026
Same author

Lignin-tailored synergistic catalyst with cobalt single-atom and zinc clusters dual-site for conversion of hemicellulose to lactic acid.

Bioresource technology·2026
Same author

Relationship Between Dietary Choline Intake and Cognitive Function in the United States: A Cross-Sectional Study of the 2011-2014 NHANES Cycle.

Food science & nutrition·2026
Same author

tDCS improves early Alzheimer's disease by synaptic vesicle fusion and release.

Military Medical Research·2026
Same author

Photodriven Sm-Catalyzed Asymmetric Ketyl-Olefin Coupling.

Journal of the American Chemical Society·2026

相关实验视频

Updated: Jun 18, 2025

Energy Dispersive X-ray Tomography for 3D Elemental Mapping of Individual Nanoparticles
10:00

Energy Dispersive X-ray Tomography for 3D Elemental Mapping of Individual Nanoparticles

Published on: July 5, 2016

11.7K

同时成像和元素分化通过能量分辨率的X射线吸收鬼影像成像.

Jin-Tao Xie, Jun-Hao Tan, Shu-Hang Bie

    Optics letters
    |August 2, 2024
    PubMed
    概括

    这项研究引入了能量分辨率的X射线吸收幽灵成像 (GI) 以同时成像和识别材料组成. 这种技术成功地在具有高空间分辨率的样本中区分了Mo,Ag和Sn组件.

    科学领域:

    • 物理 物理学 物理
    • 材料科学 材料科学 材料科学
    • 图像技术技术的成像技术

    背景情况:

    • 射线吸收光谱对于材料分析至关重要.
    • 幽灵成像 (GI) 为从有限的空间信息中重建图像提供了独特的优势.
    • 同时进行元素组成和空间分布成像仍然是一个挑战.

    研究的目的:

    • 开发和演示一个能量分辨率的X射线吸收幽灵成像技术.
    • 为了同时描绘和区分一个物体内的多个组件的元素组成.
    • 评估光谱幽灵成像的空间分辨率和实际适用性.

    主要方法:

    • 利用X射线吸收边缘进行元素识别.
    • 采用能量分辨率的X射线吸收幽灵成像 (GI).
    • 使用哈达马德面具空间调节了X射线束.
    • 用能量分辨率单像素探测器 (光谱分辨率<0.8 keV) 测量传输的X射线强度.
    • 通过将传输光谱与哈达马德模式相关联来重建光谱图像.

    主要成果:

    • 成功成像并区分了不同形状的三个组成部分 (Mo,Ag,Sn).
    • 实现了108微米的空间分辨率.

    更多相关视频

    High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue
    07:48

    High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue

    Published on: September 30, 2022

    1.3K
    Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
    10:12

    Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

    Published on: June 19, 2018

    9.0K

    相关实验视频

    Last Updated: Jun 18, 2025

    Energy Dispersive X-ray Tomography for 3D Elemental Mapping of Individual Nanoparticles
    10:00

    Energy Dispersive X-ray Tomography for 3D Elemental Mapping of Individual Nanoparticles

    Published on: July 5, 2016

    11.7K
    High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue
    07:48

    High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue

    Published on: September 30, 2022

    1.3K
    Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
    10:12

    Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

    Published on: June 19, 2018

    9.0K
  • 证明了材料组成和分布的同时成像.
  • 验证了光谱幽灵成像的实际应用.

    • 结论:

    • 能量分辨率的X射线吸收幽灵成像是一种可行的方法,可以同时进行元素组成和空间成像.
    • 该技术为材料分析提供高光谱和空间分辨率.
    • 这种方法对生物学,医学和其他领域的非侵入性分析具有重大潜力.