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相关概念视频

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

437
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...
437
Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

436
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.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
436

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相关实验视频

Updated: Jul 13, 2025

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
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Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

Published on: July 25, 2022

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基于图书馆的拉曼光谱识别使用多输入混合ResNet.

Tiejun Chen1, Sung-June Baek1

  • 1Department of ICT Convergence System Engineering, Chonnam National University, Gwangju 61186, South Korea.

ACS omega
|October 16, 2023
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种用于拉曼光谱识别的新型深度学习模型. 它有效地处理数据稀缺性和未见的光谱,改善不同系统的识别性能.

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Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
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An Integrated Raman Spectroscopy and Mass Spectrometry Platform to Study Single-Cell Drug Uptake, Metabolism, and Effects
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科学领域:

  • 分析化学 分析化学
  • 频谱学是一种光谱学.
  • 机器学习 机器学习

背景情况:

  • 拉曼光谱提供了强大的识别能力,但面临着数据预处理和稀缺的挑战.
  • 传统的方法依赖于信号相关性,而现有的深度学习模型则与未见的光谱数据作斗争.
  • 数据增强技术,如基线和噪声加法,用于解决深度学习中的数据稀缺问题.

研究的目的:

  • 开发一个强大的深度学习模型,用于拉曼光谱的目标识别.
  • 克服传统和当前深度学习方法在处理数据稀缺性和未见光谱方面的局限性.
  • 提高拉曼光谱识别的准确性和通用性.

主要方法:

  • 开发了一个多输入混合深度学习模型.
  • 该模型使用模拟的光谱数据进行训练,以解决数据稀缺问题.
  • 该方法在各种拉曼光谱系统的光谱上得到了验证.

主要成果:

  • 拟议的深度学习模型实现了卓越的识别性能.
  • 该方法有效处理未见的光谱数据,这是以前方法的局限性.
  • 该模型在不同的拉曼光谱系统中展示了强度.

结论:

  • 开发的多输入混合深度学习模型为拉曼光谱识别提供了卓越的解决方案.
  • 模拟光谱数据训练有效地解决了数据稀缺问题,并改善了对未见光谱的概括.
  • 这种方法提高了拉曼光谱在各种领域的可靠性和适用性.