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

Ionic Crystal Structures02:42

Ionic Crystal Structures

16.8K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
16.8K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.6K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.6K
Metallic Solids02:37

Metallic Solids

20.5K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
20.5K
Structures of Solids02:22

Structures of Solids

17.4K
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
17.4K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

48.1K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
48.1K
X-ray Crystallography02:18

X-ray Crystallography

25.7K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
25.7K

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

Two-Stage Electromigration Mechanism in Cu-Cu Direct Bonding Lines Revealed by In Situ Four-Dimensional Scanning Transmission Electron Microscopy.

ACS nano·2026
Same author

Nanoengineered doping overcomes sintering and grain-boundary limitations in all-solid-state lithium batteries with garnet electrolytes.

Nature nanotechnology·2026
Same author

Twist-Angle-Dependent Excitons in Moiré MoTe<sub>2</sub> Visualized by Cryogenic STEM and Monochromated EELS.

Nano letters·2026
Same author

Revealing buried ferroelectric topologies by depth-resolved electron diffraction imaging.

Nature communications·2026
Same author

A holder-type plasma cleaner for in-situ removal of hydrocarbon contamination in the transmission electron microscope chamber.

Applied microscopy·2026
Same author

Ultrafast switching and high-endurance nonvolatile memory enabled by intrinsic switchable polarization in semiconducting Janus monolayers.

Nature communications·2026

相关实验视频

Updated: Jan 14, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.5K

向原子尺度控制的结构调节在准-1D基因化物对于巨大的光学异构性.

Guodong Ren1, Shantanu Singh2,3, Gwan Yeong Jung4

  • 1Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States.

ACS nano
|October 20, 2025
PubMed
概括

研究人员通过控制原子尺度结构调制,在SrxTiS3材料中增强了巨大的光学异构性,达到Δn=2.5. 这一发现为使用可调节材料特性量身定制光极化提供了新的途径.

关键词:
收费订单是指收费的订单.电子显微镜的电子显微镜光学异构性是指光学异构性.准-1D石灰化物折射率指数的折射率指数是什么结构调节是指结构的调节.

更多相关视频

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
07:24

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Published on: April 14, 2020

18.4K
Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

10.0K

相关实验视频

Last Updated: Jan 14, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.5K
Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
07:24

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals

Published on: April 14, 2020

18.4K
Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

10.0K

科学领域:

  • 材料科学 材料科学 材料科学
  • 固态物理 固态物理
  • 光电学是指光电子产品.

背景情况:

  • 在光学上异质的材料对于操纵光极化至关重要.
  • 在Sr9/8TiS3中,由于结构调制和电荷排序,以前观察到巨大的光学异构性 (Δn = 2.1).
  • 在Sr9/8TiS3中过量的会诱导周期性的结构调节和额外的电子,导致电荷顺序和沿c轴的高极化.

研究的目的:

  • 为了进一步提高SrxTiS3化合物的巨大光学异构性.
  • 研究结构调制周期性在调整光学属性的作用.
  • 为了达到 2.5 的理论和实验双断率 (Δn) 在 Sr8/7TiS3.

主要方法:

  • 密度功能理论 (DFT) 的计算被用来研究SrxTiS3化合物 (x = [1, 9/8, 8/7, 6/5, 5/4, 4/3, 3/2]).
  • 用盐流量方法合成了Sr8/7TiS3的单晶.
  • 结构特征包括单晶X射线衍射和扫描传输电子显微镜 (STEM).
  • 测量光学属性是使用偏振解析的里埃变换红外光谱法 (FTIR) 进行的.

主要成果:

  • 理论上预测Sr8/7TiS3的最大双断率为Δn = 2.5 .
  • 由TiS6八面体叠加和镜扭曲产生的结构调制,在1 < x < 1.5.5时热力学稳定.
  • 对于x ≥ 8/7,预测了间接到直接的频段间隙过渡和增加的Ti-d状态占用率,与增强的异构性相关.
  • 在Sr8/7TiS3上的实验测量证实Dn ≈ 2.5,与理论预测相匹配.
  • 单晶XRD和STEM证实了Sr8/7TiS3的远程顺序和周期性.

结论:

  • 在SrxTiS3中对原子尺度调制的组合控制有效调整了巨大的光学异构性.
  • 该研究表明,在Sr8/7TiS3中,Δn = 2.5的最大双断率是通过优化结构调制周期性实现的.
  • 这些发现表明,类似的策略可以应用于光学性能工程的其他模块化结构.