光学合的X射线计算层图系统用于离子电池的高速检查
Jaeyoung Im1, Jun Heo1, Seunguk Cheon1
1Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 21, 2025
概括
这项研究引入了一种新的X射线计算层图系统,可以显著加快微观结构检查的速度. 创新的设计实现了高分辨率和快速扫描,用于离子电池分析等应用.
科学领域:
- 材料科学 材料科学 材料科学
- 图像技术技术的成像技术
- 非破坏性测试 不破坏性测试
背景情况:
- 传统的X射线计算机断层扫描 (CT) 用于微观结构检查使用放大,需要微焦的X射线源.
- 微焦源的功率较低,导致采集时间较长,阻碍高吞吐量检查.
- 现有的方法面临着空间分辨率和扫描速度之间的权衡.
研究的目的:
- 开发一种新的光学合的X射线计算层图系统,用于高速微观结构检查.
- 为了克服传统X射线CT系统的局限性,特别是与微焦源相关的缓慢扫描时间.
- 为了使大批量生产的部件能够进行高通量,线上检查.
主要方法:
- 实现了光学合的X射线计算层图设置,使用与物体直接接触的闪光器.
- 采用了一种具有大焦点的高功率X射线管,由接触闪光器启用,以最大限度地减少模糊.
- 执行调制转移函数 (MTF) 分析以评估空间分辨率.
主要成果:
- 使用400WX射线管与400μm焦点实现了38μm的空间分辨率.
- 展示了离子电池 (LIB) 的高质量3D成像,扫描时间低至2秒.
- 在LIB成像中获得了超过3的对比度和噪声比率.
结论:
- 拟议的系统通过将闪光灯与物体接触,有效地减少了图像模糊.
- 高功率的X射线源可以在不牺牲空间分辨率的情况下使用,显著减少扫描时间.
- 这项技术可实现高通量直线检查,克服了X射线成像中的分辨率速度权衡.
相关概念视频
X-ray Diffraction of Biological Samples
3.8K
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
3.8K
Scanning Electron Microscopy
5.1K
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...
Fundamental Principles
Accelerated...
5.1K
X-ray Imaging
7.7K
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...
7.7K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
1.1K
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....
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....
1.1K
Determination of Crystal Structures
135
In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
135


