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相关概念视频

Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

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The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
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The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
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A Modular Microfluidic Technology for Systematic Studies of Colloidal Semiconductor Nanocrystals
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新兴的计算微光谱仪 - - 从复杂的系统集成到简单的现场调制.

Yicheng Zhou1, Haoxuan Sun1, Linqi Guo1

  • 1School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou, 215006, P. R. China.

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|September 1, 2023
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概括

计算光谱仪提供便携式,即时的光谱分析. 一个革命性的单探测器设计打破了尺寸限制,推进了超光谱成像能力.

关键词:
计算式光谱仪 计算式光谱仪超光谱成像技术的使用.迷你化,微型化.测光谱仪的使用方法

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科学领域:

  • 光学和光子学 在光学和光子学.
  • 频谱学是一种光谱学.
  • 计算成像技术的成像

背景情况:

  • 传统的桌面光谱仪缺乏适用于广泛应用的便携性和瞬时性.
  • 光谱仪的小型化是一个主要趋势,由市场需求驱动.
  • 计算光谱仪提供了一种新的方法,减少对复杂光学结构的依赖.

研究的目的:

  • 审查各种光谱仪的分类和原理.
  • 为了比较不同类型的光谱仪的频谱分辨率性能.
  • 突出计算光谱仪的进步,特别是单探测器设计.

主要方法:

  • 审查关于光谱仪技术的现有文献.
  • 分析计算光谱仪原理,包括材料性能调制和重建算法.
  • 检查单探测器计算光谱仪的性能和优势.

主要成果:

  • 计算光谱仪,特别是单探测器类型,可以实现显著的小型化.
  • 超光谱成像中的足迹分辨率限制被新的计算设计所克服.
  • 材料特性在现场调制是实现单探测器光谱仪的关键.

结论:

  • 单探测器计算光谱仪代表了光谱分析和高光谱成像技术的革命性进步.
  • 这些设备提供了增强的便携性和即时性,满足市场需求.
  • 该审查预计将促进频谱分析和超频谱成像领域的进一步创新.