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相关概念视频

Nonideal Two-Component Liquid Solutions01:29

Nonideal Two-Component Liquid Solutions

Nonideal liquid solutions, also known as real solutions, do not strictly follow Raoult's law. Raoult's law is a rule of thumb in physical chemistry. However, not all mixtures adhere to this law due to varying molecular interactions. For example, in an acetone/chloroform solution, the individual vapor pressures of the components are lower than expected, resulting in a total vapor pressure below that predicted by Raoult's law, causing a negative deviation.On the other hand, in an ethanol/water...

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相关实验视频

Updated: Jul 11, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

对于二次非线性光学应用的异常热稳定的聚合物.

T Verbiest, D M Burland, M C Jurich

    Science (New York, N.Y.)
    |June 16, 1995
    PubMed
    概括

    新的"捐赠体嵌入式"聚合物在非线性光学 (NLO) 应用中表现出显著的热稳定性. 这些材料在高温下保持它们的极化秩序,性能优于传统的挂NLO聚合物.

    科学领域:

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

    背景情况:

    • 非线性光学 (NLO) 聚合物对于先进的光子应用至关重要.
    • 在高温下保持电场诱导的极化秩序是一个关键的挑战.
    • 现有的侧链聚合物往往缺乏足够的热稳定性,这是由于灵活的带.

    研究的目的:

    • 为了研究电场诱导的热稳定性,在新的"捐赠者嵌入式"侧链聚合物中引发了聚合秩序.
    • 将这些新聚合物的稳定性与传统的NLO聚合物进行比较.
    • 评估这些材料在高温NLO应用中的潜力.

    主要方法:

    • 合成"捐赠者嵌入式"侧链聚胺与脊柱内置的染色体.
    • 电场抛光以诱导非线性光学秩序.
    • 热分析 (例如,TGA) 来确定化学稳定性.
    • 在高温下测量聚合顺序稳定性的测量.

    主要成果:

    • "捐赠者嵌入"的聚化物表现出高达350°C的特殊化学稳定性.
    • 即使在300°C时,也观察到显著的聚合秩序稳定性.
    • 这些新聚合物比传统的带有柔性带的侧链聚合物更稳定.

    更多相关视频

    Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
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    Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

    Published on: May 20, 2014

    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
    07:56

    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

    Published on: September 20, 2017

    相关实验视频

    Last Updated: Jul 11, 2026

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
    11:08

    Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

    Published on: November 30, 2012

    Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
    10:56

    Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

    Published on: May 20, 2014

    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
    07:56

    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

    Published on: September 20, 2017

    结论:

    • 与传统的NLO聚合物相比",捐赠者嵌入式"侧链聚合物提供了优越的热稳定性和极性顺序稳定性.
    • 结合NLO染色体的骨干,消除了对柔性带的需求,提高了稳定性.
    • 这些发现表明,这些材料在苛刻的高温光子设备中具有有前途的应用.