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相关概念视频

UV–Vis Spectrometers01:14

UV–Vis Spectrometers

1.3K
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.
1.3K
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

2.6K
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
2.6K
UV–Vis Spectrum01:30

UV–Vis Spectrum

1.1K
When light passes through a substance, a portion of the light is absorbed while the remaining light is reflected or transmitted. If the molecule absorbs light between the wavelengths of 180–400 nm range, the UV spectrum is obtained, and if it absorbs light in the 400–780 nm wavelength range, the visible spectrum is obtained.     
The UV–Vis spectrum of a molecule is the plot of its absorbance versus wavelength. The plot is drawn by taking molar...
1.1K
UV–Vis Spectroscopy of Conjugated Systems01:32

UV–Vis Spectroscopy of Conjugated Systems

7.0K
Organic compounds with conjugated double bonds show strong absorption features in the UV–visible region of the electromagnetic spectrum attributed to π → π* electronic excitations. Generally, a UV–vis absorption spectrum is recorded as a plot of absorbance vs wavelength. The wavelength of maximum absorbance, which manifests as a peak in the absorption spectrum, is denoted as λmax.
One of the factors influencing λmax is the extent...
7.0K
UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

1.4K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
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基于MoOx的色度测量传感器用于紫外线可视化.

Zhaokang Zheng1, Zhen Liu1, Xingying Li1

  • 1College of Engineering Physics, Shenzhen Technology University, Shenzhen 518118, China.

Molecules (Basel, Switzerland)
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PubMed
概括
此摘要是机器生成的。

新的氧化 (MoOx) 纳米结构为检测有害紫外线辐射提供了独特,选择性和稳定的解决方案. 这一进步提供了一种更快,更可靠的方法来保护个人免受日益增加的紫外线照射.

关键词:
在MoOx纳米结构中.这是光色化合物.紫外线传感器 紫外线传感器视觉分析 视觉分析视觉化的可视化

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术纳米技术
  • 传感器技术 传感器技术

背景情况:

  • 全球臭氧层的减少和臭氧洞增加了人类暴露在危险的太阳紫外线 (UV) 辐射中.
  • 开发有效的紫外线传感器对于个人保护和环境监测至关重要.
  • 纳米材料在先进的紫外线传感应用中具有有前途的特性.

研究的目的:

  • 为了合成和表征新的MoOx纳米结构用于紫外线传感.
  • 评估MoOx纳米结构作为UV传感器的性能,重点关注选择性,灵敏性,速度和稳定性.
  • 探索超越传统电力输出的先进检测和分析能力.

主要方法:

  • 使用水热方法合成MoOx纳米结构.
  • 描述MoOx纳米结构的特性.
  • 在全频光下测试开发的传感器的性能,包括电信号输出和视觉分析.

主要成果:

  • 与传统的光色化合物相比,MoOx纳米结构表现出高度的独特性,选择性和出色的稳定性.
  • 传感器在全光谱范围内实现了快速而准确的紫外线检测.
  • 传感器提供了传统的电信号输出和先进的视觉放大,显示和分析功能.

结论:

  • 水热合成的MoOx纳米结构是用于先进紫外线传感的高效材料.
  • 开发的紫外线传感器为个人保护和监控提供了卓越的性能,可靠性和实用性.
  • 视觉分析的整合提高了传感器的实用性和数据解释.