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Infrared (IR) Spectroscopy: Overview01:09

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When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
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IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
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High-definition Fourier Transform Infrared FT-IR Spectroscopic Imaging of Human Tissue Sections towards Improving Pathology
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在使用中红外被动光谱成像进行的非侵入性血糖测量上的排放整体效应.

Daichi Anabuki1, Shiori Tahara1, Hibiki Yano1

  • 1Graduate School of Science for Creative Emergence, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, Japan.

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概括

这项研究揭示了辐射积分效应,解释了中红外光谱如何非侵入性地检测血糖. 这个原理阐明了物质厚度和吸收如何影响远程传感的排放强度.

关键词:
里埃变换光谱学 里埃变换的光谱学中红外光谱学中红外光谱学.非侵袭性血糖传感器是一种非侵袭性血糖传感器.热发射光谱学 热发射光谱学热辐射的热辐射

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科学领域:

  • 生物医学光学 生物医学光学
  • 频谱学是一种光谱学.
  • 非侵入式传感 传感器

背景情况:

  • 生物发射中红外光,强度随温度而变化.
  • 通过中红外被动光谱成像进行非侵入性血糖测量已被证明.
  • 中红外光谱检测葡萄糖检测能力的基本原理尚不清楚.

研究的目的:

  • 为了阐明使用中红外光谱检测葡萄糖检测背后的原理.
  • 提出并证明"排放整合效应"作为基本机制.
  • 解释物质厚度,吸收和排放强度之间的关系.

主要方法:

  • 开发了"排放整合效应"原则.
  • 使用中红外被动光谱成像.
  • 测量了不同厚度的聚烯样本的光谱辐射.

主要成果:

  • 使用聚烯样本证明了排放整体效应.
  • 模拟结果表明,像葡萄糖这样的稀释成分比缩成分更容易检测.
  • 提出的原则解释了基于厚度和吸收的排放强度的变化.

结论:

  • 排放积分效应是中红外葡萄糖检测的基本工作原理.
  • 中红外被动光谱成像为远程物质测量提供了潜力.
  • 这一原则增强了对非侵入性光谱分析的理解.