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相关概念视频

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy  (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
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对于基于MEMS的里叶变换谱仪的异步相同光路差采样方法.

Ruifan Zhao, Yuan Xue, Qiangqiang Liu

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    |August 13, 2025
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    概括

    一种新的异步采样方法消除了MEMS里埃变换光谱仪中的激光干扰. 这种技术提高了信号质量,并使近红外应用中精确的光谱测量成为可能.

    科学领域:

    • 频谱学是一种光谱学.
    • 微电子机械系统 (MEMS) 是一种微电子机械系统.

    背景情况:

    • 基于MEMS的近红外 (NIR) 范围的富里埃变换光谱仪 (FTS) 通常使用激光来实时检测镜像位置.
    • 激光和样本干扰信号的同步采集导致不良的光学合,损害数据质量.

    研究的目的:

    • 提出和验证一个异步相等光路径差异 (AEOPD) 采样方法.
    • 为了消除位置传感激光器和MEMS FTS.中的样本信号之间的光学合.

    主要方法:

    • 开发了一个AEOPD采样策略,在该策略中,只有当位置传感激光关闭时,才能获得采样干扰信号.
    • 定期脉冲NIR激光器进行实时MEMS镜面板位置检测.
    • 在基于微镜的电热MEMSFTS系统中实现并测试了该方法.

    主要成果:

    • 成功消除了激光合到样本信号中的情况.
    • 达到高达12.5分钟的激光脉冲周期,同时保持0.0005.5以内的光谱重复性.
    • 显示了FTS测量的信号噪声比率 (SNR) 的增加.

    结论:

    • AEOPD采样方法有效地解决了MEMS FTS中激光采样信号合的问题.

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  • 这种技术提高了NIR光谱的光谱精度和信号质量.
  • 拟议的方法适用于未来基于MEMS的FTS光谱仪开发.