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相关概念视频

Aneurysm III: Interprofessional Care01:26

Aneurysm III: Interprofessional Care

Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...

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相关实验视频

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Characterization of Surface Modifications by White Light Interferometry: Applications in Ion Sputtering, Laser Ablation, and Tribology Experiments
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在基于束干扰的光刻系统中测量晶圆对齐度.

Lijun Zhou, Xiangzhao Wang, Zhongliang Li

    Optics express
    |December 19, 2025
    PubMed
    概括

    这项研究引入了一种新的束干涉测量方法,用于半导体制造中的高精度晶圆对齐. 这种技术实现了极好的线性和可重复性,为石版系统提供了一个有前途的替代方案.

    科学领域:

    • 光学和光子学 在光学和光子学.
    • 半导体制造技术技术 半导体制造
    • 计量学 计量学 计量学

    背景情况:

    • 覆盖精度对于集成电路制造至关重要.
    • 高性能晶圆对齐对于实现覆盖精度至关重要.
    • 现有的相网格对齐方法符合先进光刻技术的要求,但正在寻找替代方法.

    研究的目的:

    • 提出和验证用于高精度晶圆对齐的替代光学测量方案.
    • 开发一种快速,高精度的晶圆对齐技术.
    • 探索束干涉测量的潜力,用于石版应用.

    主要方法:

    • 使用束干涉测量来将格子衍射顺序转换为束.
    • 采用基于干扰模式旋转的位移到角度转换机制.
    • 建立一个理论模型并进行实验验证.

    主要成果:

    • 证明了横向位移和干扰模式旋转之间的线性关系 (R2 > 0.999 在 1 μm 上).
    • 实现了比1.8nm更好的测量可重复性.
    • 在实验室条件下验证了束干扰测量方案的性能.

    结论:

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    • 束干涉度提供了一个精确的解决方案,用于在晶圆对齐中的实时位置传感.
    • 拟议的方法具有显著的潜力,可以提高DUV和EUV石版的覆盖精度.
    • 这种技术为现有的阶段格对齐系统提供了可行的替代方案.