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相关概念视频

Determination of Crystal Structures01:29

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...

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相关实验视频

Updated: Jun 14, 2026

Small and Wide Angle X-Ray Scattering Studies of Biological Macromolecules in Solution
12:53

Small and Wide Angle X-Ray Scattering Studies of Biological Macromolecules in Solution

Published on: January 8, 2013

无形固态水:一个X射线衍射研究

C G Venkatesh, S A Rice, A H Narten

    Science (New York, N.Y.)
    |December 6, 1974
    PubMed
    概括
    此摘要是机器生成的。

    研究人员研究了10K形成的无形固体水. 它的结构与冰不同,通过分离混乱和热效应,为液态水模型提供了洞察力.

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    Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels
    11:34

    Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels

    Published on: September 8, 2016

    Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
    10:28

    Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

    Published on: May 27, 2018

    相关实验视频

    Last Updated: Jun 14, 2026

    Small and Wide Angle X-Ray Scattering Studies of Biological Macromolecules in Solution
    12:53

    Small and Wide Angle X-Ray Scattering Studies of Biological Macromolecules in Solution

    Published on: January 8, 2013

    Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels
    11:34

    Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels

    Published on: September 8, 2016

    Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
    10:28

    Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

    Published on: May 27, 2018

    科学领域:

    • 凝聚物质物理学 凝聚物质物理学
    • 材料科学是一种材料科学.
    • 物理化学 物理化学

    背景情况:

    • 无形固态水 (ASW) 是水的一种非晶体相.
    • 了解ASW结构对于模拟液态水至关重要.
    • 之前关于ASW结构的研究一直受到数据分辨率的限制.

    研究的目的:

    • 描述低温形成的无形固体水的结构.
    • 将ASW的结构性质与已知的冰相进行比较.
    • 评估ASW作为液态水研究的模型系统.

    主要方法:

    • 水蒸气在10克尔文的金属表面上凝结.
    • 高精度,高分辨率的X射线衍射分析.
    • 氧原子对相关函数的计算.

    主要成果:

    • 在10K形成的ASW估计密度为1.2g/cm3.
    • 在ASW中的位置相关性只延伸到几个分子半径.
    • 在ASW中氧原子的辐射分布与低压冰形式不同.

    结论:

    • 与结晶冰相比,无形固态水表现出独特的结构特征.
    • ASW为调查液态水的特性提供了一个有价值的系统.
    • 在ASW中分离静态干扰和热刺激效应有助于理解水的复杂行为.