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相关概念视频

X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

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 crystal...
X-ray Imaging01:24

X-ray Imaging

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 X-rays, and by 1900, X-ray was widely...
Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...

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相关实验视频

Updated: Jul 10, 2026

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
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A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

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零维的基于的多轴铁电,用于X射线检测.

Wenjuan Wei1,2, Xu Wang1, Yen Wei2

  • 1School of Optoelectronics, Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)
|December 29, 2025
PubMed
概括

这项研究引入了一种新的多轴铁电材料,用于先进的X射线探测器. 它展示了角度独立的检测和记录灵敏度,克服了以前铁电X射线探测器设计的局限性.

关键词:
0D 基于的基矿.检测X射线的检测方法角度独立性的角度独立性.多轴铁电机多轴电机

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Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

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科学领域:

  • 材料科学 材料科学 材料科学
  • 固态物理 固态物理
  • 探测器技术 探测器技术

背景情况:

  • 铁电极化辅助器在X射线探测器中提取电荷,但在单轴材料中面临挑战.
  • 单轴铁电器的错位限制了设备的性能,因为它使偏振偏离电荷收集.

研究的目的:

  • 为了证明一个多轴铁电, (TMP) ((Me-TMP) InBr6,用于角度独立的X射线检测.
  • 在X射线探测器应用中克服单轴铁电的局限性.

主要方法:

  • 多轴铁电 (TMP) 的制造和特征 (Me-TMP) InBr6.6.
  • 使用偏振电场歇斯底里循环和灵敏度测量的X射线探测器的性能评估.
  • 载体动态的分析,包括激子结合能量,载体寿命和产品的移动寿命.

主要成果:

  • 多轴铁电器表现出高和极化 (3.88和13.2μC/cm2).
  • 获得了抑制的刺激子结合能量 (96.8 meV),延长载体寿命 (1.81 ms),以及具有高流动性寿命的产品 (10-3 cm2/V).
  • 在24V/mm时实现了12510μC Gyair-1 cm-2的记录灵敏度,在自动供电模式下达到806μC Gyair-1 cm-2.

结论:

  • 多轴铁电极化可实现有效的载体分离和运输,提高X射线探测器的性能.
  • 该材料展示了角度独立的X射线检测和由于高离子迁移激活能量而具有高的操作稳定性.
  • 这项工作为开发高性能,稳定的X射线探测器提供了有希望的途径.