深度神经网络:作为拉曼光谱学的多重预处理中的新管道
1Xi'an Institute of Optics and Precision Mechanics of the Chinese Academy of Sciences, Shaanxi, 710076, China; The Key Laboratory of Biomedical Spectroscopy of Xi'an, Shaanxi, 710076, China; University of Chinese Academy of Sciences, Beijing 100049, China.
概括
这项研究引入了一种新的深度学习方法,用于智能拉曼光谱预处理. 该方法有效地减少噪声和基线漂移,显著提高信号质量和模拟和真实数据的峰值强度准确性.
科学领域:
- 分析化学 分析化学
- 频谱学是一种光谱学.
- 计算科学 计算科学
背景情况:
- 拉曼光谱技术提供了快速,非侵入性的化学结构信息.
- 实际应用受到噪音和基线漂移的阻碍,使光谱分析复杂化.
- 现有的预处理方法需要人工干预,并且是特定于数据集的.
研究的目的:
- 为拉曼光谱学开发一个智能,自动化的光谱预处理管道.
- 通过利用深度学习来解决传统预处理技术的局限性.
- 提高拉曼光谱数据的质量和准确性,用于分析.
主要方法:
- 构建了拉曼光谱信号生成的数学模型.
- 基于真实系统噪声参数生成了一个模拟数据集.
- 开发了一个用于基线估计的完全连接网络和用于光谱无声化的UNET模型.
- 实施了一个智能联合处理方法,将基线估计和拒绝结合起来.
主要成果:
- 与模拟数据的经典方法相比,拟议的深度学习方法显著提高了信号质量和峰值强度的准确性.
- 该方法在实际的拉曼光谱系统上表现出色.
- 间接验证了拉曼信号模拟模型的有效性.
结论:
- 该研究提出了智能拉曼光谱预处理的高效管道.
- 开发的方法可以适应各种任务,并提高信号质量.
- 这项工作为改善拉曼光谱数据分析提供了新的方向.
相关概念视频
01:20Raman Spectroscopy: Overview
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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.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
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01:26Raman 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...
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...
465