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Nanoscale Characterization of Liquid-Solid Interfaces by Coupling Cryo-Focused Ion Beam Milling with Scanning Electron Microscopy and Spectroscopy
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纳米级表面计量与基于液晶的相位移角切割干扰仪.

Debasish Bag, Susanta Chakraborty, Aloka Sinha

    Optics letters
    |April 1, 2024
    PubMed
    概括

    这项研究引入了一种用于光学表面计量学的新型相位移角切割干扰仪. 基于液晶的技术准确地测量了步骤高度,为先进的光学测量提供可调节的空间分辨率.

    科学领域:

    • 光学计量学是指光学计量学.
    • 干涉测量是干涉测量的方法.
    • 液晶应用 液晶应用

    背景情况:

    • 光学表面计量 (SM) 需要精确的测量技术.
    • 现有的干涉测量方法可能是复杂的分析.
    • 液晶 (LCs) 提供可调节的光学特性.

    研究的目的:

    • 提出并演示SM的相位移转角切割干扰仪.
    • 使用液晶电池进行相位转移和极化控制.
    • 为了验证步骤高度测量的技术.

    主要方法:

    • 使用形LC电池和极化相移器开发一个角切割干扰仪.
    • 用四个相位移的干涉图进行相位移技术的应用.
    • 使用简化维纳解卷法对剪切干扰图进行分析.
    • 通过模拟和实验阶段高度测量验证.

    主要成果:

    • 成功演示了干扰仪用于步骤高度测量.
    • 实验准确度为5.56%的步骤高度的确定.
    • 结果与原子力显微镜 (AFM) 测量结果一致.
    • 对干扰图分析的简化维纳解卷方法的验证.

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    结论:

    • 拟议的基于LC的角切割干扰仪对于光学表面计量学是有效的.
    • 该技术提供了准确的步骤高度测量与可调节的空间分辨率.
    • 简化分析方法对于剪切干扰图是有效的.