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X-ray Diffraction of Biological Samples01:10

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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.
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Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
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相关实验视频

Updated: May 3, 2026

Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
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发现比钻石更难的材料:宏观和微观研究

Maxim Yu Arsentev1, Evgeny I Sysoev2, Stepan A Vorobiev1

  • 1Infochemistry Scientific Center, ITMO University, 9 Lomonosova Street, Saint-Petersburg 191002, Russia.

ACS applied materials & interfaces
|May 21, 2025
PubMed
概括

由晶体结构启发的三重周期性最小表面 (TPMS) 超材料提供增强的同位素性和机械性能. 在面中心立方体 (FCC) 超材料中结合粒度边界显著提高了性能,超过了钻石结构.

关键词:
添加剂制造 添加剂制造 添加剂制造细胞材料是细胞材料.密度函数理论密度函数理论机械性能 机械性能 机械性能分子动力学模拟模拟

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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
  • 晶体学 晶体学是指结晶学.

背景情况:

  • 三重周期性最小表面 (TPMS) 是建筑元材料的有希望的模板.
  • 晶体微观结构的特征可以为高级元材料的设计提供信息,以提高性能.
  • 之前的工作通过将晶体微观结构特征转移到建筑材料上来证明了耐损伤,轻量级的设计.

研究的目的:

  • 开发一种简单的,类似于多晶的方法来制造TPMS架构.
  • 调查谷物边界和包装对元材料性质的影响.
  • 设计和评估灵感来自晶体结构的新型超材料,以获得卓越的机械性能.

主要方法:

  • 使用类似于多晶的方法来创建TPMS架构.
  • 对具有不同粒度边界类型和包装安排 (FCC与随机) 的细胞元材料进行比较分析.
  • 用分子动力学 (MD) 模拟来研究双胞胎钻石元材料的弹道冲击阻力.

主要成果:

  • 与不连贯的边界相比,具有双粒边界的元材料表现出显著增加的同位素性 (高达3.61倍).
  • 面中心立方体 (FCC) 谷物包装显示出优越的和剪模和同位素性,而不是随机包装.
  • 结合一个钻石超材料的结果是,其性能超过了单一的钻石格子的性能,可与富勒里特相比较,并且在弹道冲击下表现出更强的性.

结论:

  • 一种以水晶为灵感的方法使得高性能超材料的设计具有可调节的机械性能.
  • 双粒边界和FCC包装对于在TPMS元材料中实现增强的同otropy和机械模块至关重要.
  • 开发的方法促进了对宏观和微观应用的先进超材料的创建,优于钻石等现有结构.