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相关概念视频

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

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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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Raman Spectroscopy: Overview01:20

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The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
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In situ hybridization (ISH) is a technique used to detect and localize specific DNA or RNA molecules in cells, tissue, or tissue sections using a labeled probe. The technique was first used in 1969 for the investigation of nucleic acids. It is currently an essential tool in scientific research and clinical settings, especially for diagnostic purposes.
Types of probes and labels
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在现场SERS和在现场Raman:解读界面现象和过程.

Jingyi Wei1, Sixian Yu2, Tianxiang Zhou1

  • 1Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Material Sciences and Technology, China University of Geosciences, Beijing 100083, China. hanfeng@cugb.edu.cn.

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概括

本综述详细介绍了用于研究表面反应的现场拉曼和表面增强拉曼光谱 (SERS). 它强调了化学分析中SERS在现场应用的关键原则,进展和挑战.

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科学领域:

  • 表面科学是一门学科.
  • 频谱学是一种光谱学.
  • 化学分析 化学分析

背景情况:

  • 拉曼和SERS为表面分析提供振动光谱数据.
  • 这些技术对分子电子密度敏感,有助于化学反应研究.
  • 在开发现场SERS基板和分析复杂数据方面存在挑战.

研究的目的:

  • 系统地在现场审查表面反应研究的拉曼/SERS原则和进展.
  • 从最近的实地研究中编制物种识别和光谱特征.
  • 讨论现场SERS的挑战和未来前景.

主要方法:

  • 简要介绍SERS机制和影响因素.
  • 讨论界面现象 (物种过渡,电子密度,晶体结构变化).
  • 汇编和分析报告的关于表面反应的SERS实地研究.

主要成果:

  • 关于SERS机制和影响现场测量的因素的概述.
  • 在表面反应中系统编制物种识别和光谱特征.
  • 界面现象的识别对于SERS实地分析至关重要.

结论:

  • 在现场Raman/SERS是详细地表反应分析的强大工具.
  • 需要进一步开发可靠的现场SERS基板和数据解释.
  • 未来的研究应该整合先进的计算方法,如机器学习,以获得更深入的见解.