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相关概念视频

Structures of Solids02:22

Structures of Solids

14.2K
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...
14.2K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

26.6K
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...
26.6K

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相关实验视频

Updated: Jul 13, 2025

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

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在有序和无序的细胞元材料中进行结构-性质相关的数据驱动框架.

Shengzhi Luan1, Enze Chen1, Joel John1

  • 1Department of Civil and Systems Engineering, Johns Hopkins University, Baltimore, MD 21218, USA.

Science advances
|October 13, 2023
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种使用机器学习的统一框架,用于将细胞元材料微结构与其属性联系起来. 它揭示了杆的方向和细胞紧性如何影响材料的行为,从而使新的设计成为可能.

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Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
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科学领域:

  • 材料科学 材料科学 材料科学
  • 机械工程 机械工程
  • 计算力学 计算力学 计算力学

背景情况:

  • 了解微观结构和宏观性质之间的关系对于设计先进的细胞元材料至关重要.
  • 目前的方法往往缺乏深入连接特定形态特征与材料性能的能力.

研究的目的:

  • 开发一个统一的框架来预测细胞元材料的宏观性质.
  • 使用机器学习揭示关键形态特征和材料特性之间的联系.
  • 确定影响材料行为的关键微观结构特征.

主要方法:

  • 机器学习模型与可解释性算法的集成.
  • 分析支架方向及其对有效刚度的影响.
  • 对剪切模块和平均细胞紧密度的检查.
  • 关于框架结构刚性的麦克斯韦标准的改进.

主要成果:

  • 该框架成功地预测了宏观性质,并将它们与形态特征联系起来.
  • 标杆方向被确定为特定微观结构的刚性至关重要,导致反直觉的材料行为.
  • 平均细胞紧度成为预测剪切模块的关键特征.
  • 对于细胞元材料,提供了麦克斯韦标准的精细版本.

结论:

  • 拟议的框架为理解和设计细胞超材料提供了一个强大的工具.
  • 关键的形态特征,如支架的方向和细胞的紧性,显著地决定了材料的特性.
  • 该框架的通用性允许扩展到其他建筑材料和属性.