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相关概念视频

Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...

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相关实验视频

Updated: Jul 7, 2026

Harmonic Nanoparticles for Regenerative Research
09:23

Harmonic Nanoparticles for Regenerative Research

Published on: May 1, 2014

一种新的高效晶体/聚合物复合材料用于非线性光学.

N Azoz, P D Calvert, M Kadim

    Nature
    |March 1, 1990
    PubMed
    概括

    研究人员通过将有机晶体嵌入聚合物矩阵开发了新的非线性光学材料. 这些复合材料为光电子设备应用提供了增强的机械性能和可调节的光学特性.

    科学领域:

    • 材料科学 材料科学 材料科学
    • 光电学是指光电子产品.
    • 聚合物科学 聚合物科学

    背景情况:

    • 非线性光学 (NLO) 材料对于光电子设备至关重要,需要光学和机械性能.
    • 由于机械强度差,现有的NLO材料往往缺乏必要的加工能力.
    • 具有高非线性反应的脆弱有机晶体很难整合到设备中.

    研究的目的:

    • 开发一种新的非线性光学材料类别,具有更好的机械性能和可加工性.
    • 将有机化合物的理想光学非线性与聚合物的机械强度相结合.
    • 为光电子应用创造透明,不散射的复合材料.

    主要方法:

    • 在透明的聚合物矩阵内,光学非线性有机化合物的生长的对齐晶体.
    • 利用聚合物宿主来赋予有机晶体机械强度和刚性.
    • 修改聚合物主体以调整复合材料的折射率.

    主要成果:

    • 成功创建复合材料,将非线性光学有机晶体集成到聚合物矩阵中.
    • 由此产生的复合材料表现出增强的机械性能,克服了纯有机晶体的脆弱性.
    • 这些材料是透明的,不散射,具有可调节的折射率.

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  • 在开发的复合材料中观察到高化学稳定性.

    • 结论:

    • 开发的聚合物矩阵复合材料代表了一类新的非线性光学材料.
    • 这些材料为光电子产品提供了有前途的光学和机械性能组合.
    • 增强的可加工性和可调节性特征使这些复合材料在未来设备开发中发挥重要作用.