Bravais-unit cell

简明释义

布拉维晶胞;

英英释义

例句

1.Each Bravais-unit cell contains lattice points that represent the positions of atoms in the crystal structure.

每个布拉维单位晶胞包含晶格点，表示晶体结构中原子的位置信息。

2.The concept of the Bravais-unit cell helps in visualizing three-dimensional structures in solid-state physics.

布拉维单位晶胞的概念有助于在固态物理中可视化三维结构。

3.In crystallography, the basic repeating unit is known as a Bravais-unit cell, which defines the symmetry and structure of the crystal.

在晶体学中，基本的重复单元称为布拉维单位晶胞，它定义了晶体的对称性和结构。

4.Understanding the dimensions of a Bravais-unit cell is crucial for predicting the properties of a material.

理解布拉维单位晶胞的尺寸对于预测材料的性质至关重要。

5.The Bravais-unit cell can be classified into different types such as cubic, tetragonal, and hexagonal.

布拉维单位晶胞可以分为不同类型，如立方体、四方体和六方体。

作文

The concept of a Bravais-unit cell is fundamental in the field of crystallography. A Bravais-unit cell refers to the smallest repeating unit of a crystal lattice that can be used to describe the entire structure of a crystalline material. Understanding this concept is crucial for scientists and engineers who work with materials at the atomic level, as it provides insights into the arrangement of atoms within a solid. In crystallography, there are 14 distinct types of Bravais-unit cells, which are categorized based on their symmetry and the dimensions of their edges. These include cubic, tetragonal, orthorhombic, hexagonal, rhombohedral, and monoclinic structures. Each type of Bravais-unit cell has unique properties that influence the physical characteristics of the material it forms. For instance, the cubic Bravais-unit cell is often associated with metals, while the hexagonal type is common in minerals like quartz.One of the most significant aspects of the Bravais-unit cell is its role in determining the packing efficiency of atoms in a crystal. The arrangement of atoms within a Bravais-unit cell affects how tightly they are packed together, which in turn influences properties such as density, strength, and thermal conductivity. Therefore, understanding the specifics of a Bravais-unit cell allows researchers to predict how a material will behave under different conditions.Moreover, the Bravais-unit cell serves as a building block for more complex structures. By replicating the Bravais-unit cell in three-dimensional space, one can construct the entire crystal lattice. This is particularly important in materials science, where the design of new materials often relies on manipulating these basic units. For example, by altering the dimensions or symmetry of a Bravais-unit cell, scientists can create materials with tailored properties for specific applications, such as semiconductors or superconductors.In addition to its practical applications, the study of Bravais-unit cells also has theoretical implications. The mathematical description of these cells involves group theory and symmetry operations, which help in understanding the fundamental principles governing crystal structures. This theoretical framework is essential for predicting how changes at the atomic level can affect macroscopic properties of materials.In conclusion, the Bravais-unit cell is a cornerstone concept in crystallography and materials science. Its significance extends from practical applications in material design to theoretical explorations of symmetry and atomic arrangement. As research in nanotechnology and advanced materials continues to evolve, the importance of understanding Bravais-unit cells will only grow, paving the way for innovations that harness the unique properties of crystalline materials.

“Bravais单位晶胞”的概念在晶体学领域中是基础性的。“Bravais单位晶胞”指的是晶格的最小重复单元，可以用来描述晶体材料的整个结构。理解这一概念对于从事材料科学和工程的科学家和工程师至关重要，因为它提供了对固体内部原子排列的深入见解。在晶体学中，有14种不同类型的Bravais单位晶胞，这些类型根据其对称性和边长的维度进行分类。这些类型包括立方、四方、正交、六方、菱面体和单斜结构。每种类型的Bravais单位晶胞都有独特的特性，这些特性会影响材料的物理特征。例如，立方Bravais单位晶胞通常与金属相关，而六方类型则常见于石英等矿物。Bravais单位晶胞的一个重要方面是它在决定晶体中原子的堆积效率中的作用。Bravais单位晶胞内原子的排列影响它们的紧密程度，这又影响到诸如密度、强度和热导率等性质。因此，了解Bravais单位晶胞的具体情况可以让研究人员预测材料在不同条件下的表现。此外，Bravais单位晶胞作为更复杂结构的构建模块。通过在三维空间中复制Bravais单位晶胞，可以构建整个晶体格子。这在材料科学中尤为重要，因为新材料的设计往往依赖于对这些基本单元的操控。例如，通过改变Bravais单位晶胞的尺寸或对称性，科学家可以创建具有特定应用的定制材料，如半导体或超导体。除了实际应用外，对Bravais单位晶胞的研究还有理论意义。这些单元的数学描述涉及群论和对称操作，有助于理解支配晶体结构的基本原则。这一理论框架对于预测原子级别的变化如何影响材料的宏观特性至关重要。总之，Bravais单位晶胞是晶体学和材料科学中的基石概念。其重要性从材料设计中的实际应用延伸到对称性和原子排列的理论探讨。随着纳米技术和先进材料研究的不断发展，理解Bravais单位晶胞的重要性将愈加突出，为利用晶体材料的独特特性铺平道路。