超均,非均和反均无序异质材料及其通过光谱密度函数传输性能的三维构造
Wenlong Shi1, Yang Jiao1,2, Salvatore Torquato3,4,5,6
1Arizona State University, Materials Science and Engineering, Tempe, Arizona 85287, USA.
Physical review. E
|April 18, 2025
概括
本研究介绍了一种计算框架,用于设计使用光谱密度函数设计具有特定微观结构的异质材料. 研究表明,可以控制材料的特性,如扩散和透性,从而实现定制的复合材料设计.
科学领域:
- 材料科学 材料科学 材料科学
- 计算物理 计算物理
- 统计力学 统计力学
背景情况:
- 异质材料的物理性质与它们的微观结构有关.
- 光谱密度函数 (SDF) 对于确定传输和波传播特征至关重要.
- SDF提供了流体透性的界限,并使材料设计成为可能.
研究的目的:
- 开发一个高效的计算框架,用于构建具有目标光谱密度函数的3D异质材料.
- 在3D中实现和描述反超均的两相异质材料.
- 研究微观结构相关性,光谱密度函数和传输特性之间的关系.
主要方法:
- 利用基于福里埃空间的计算框架来构建3D统计同位素双相异质材料.
- 采用各种分析功能形式的光谱密度函数来生成隐形超均,标准超均,非超均和反超均材料.
- 从光谱密度直接计算的扩散扩散性和估计的流体透性.
主要成果:
- 通过调整光谱密度函数,成功地在不同材料类 (超均,反超均) 中构建了多样化的微结构.
- 首次实现了3D反超均双相异质材料的实现,具有功率定律尾部自变函数.
- 证明光谱密度函数参数显著影响扩散扩散性和流体透性,抗超均材料具有更高的透性.
结论:
- 开发的框架允许创建具有有针对性的微观结构和可调节的传输特性的3D异质材料.
- 参数化的光谱密度为计算材料设计和优化提供了一个强大的工具.
- 这些发现突出了设计具有特定性能特性的先进复合材料的潜力.
更多相关视频
08:04Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
Published on: May 27, 2020
8.3K
10:10Three-Dimensional Particle Shape Analysis Using X-ray Computed Tomography: Experimental Procedure and Analysis Algorithms for Metal Powders
Published on: December 4, 2020
1.8K
相关概念视频
Density
13.6K
Density is an important characteristic of substances, crucial in determining whether an object sinks or floats in a fluid. Its SI unit is kg/m3, and its cgs unit is g/cm3. The density of an object helps in identifying its composition, and also reveals information about the phase of the matter and its substructure. The densities of liquids and solids are roughly comparable, consistent with the fact that their atoms are in close contact. However, gases have much lower densities than liquids and...
13.6K
Generalized Hooke's Law
727
The generalized Hooke's Law is a broadened version of Hooke's Law, which extends to all types of stress and in every direction. Consider an isotropic material shaped into a cube subjected to multiaxial loading. In this scenario, normal stresses are exerted along the three coordinate axes. As a result of these stresses, the cubic shape deforms into a rectangular parallelepiped. Despite this deformation, the new shape maintains equal sides, and there is a normal strain in the direction of...
727
Uniform Distribution
4.7K
The uniform distribution is a continuous probability distribution of events with an equal probability of occurrence. This distribution is rectangular.
Two essential properties of this distribution are
Two essential properties of this distribution are
4.7K
Indeterminate Structure
466
Indeterminate structures refer to structures where internal forces and reactions cannot be determined using only the equations of static equilibrium. Indeterminate structures have more unknown forces and reaction forces than equations of static equilibrium that can be used to determine them. Indeterminate structures are often used in engineering to create complex, efficient, and aesthetically pleasing structures. There are various types of indeterminate structures used in engineering and...
466
Intrinsically Disordered Proteins
17.5K
Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
17.5K
Structures of Solids
13.5K
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...
13.5K
