对紫外线引起的发光的客观解释,用于描述图像材料的特征
Scientific reports
|November 20, 2023
概括
紫外线诱导发光 (UVL) 分析为艺术品保护提供了新的定量见解. 本研究开发了一种识别颜料及其在艺术品中的应用方法,超越了定性观察.
科学领域:
- 艺术保护科学 艺术保护科学
- 材料科学 材料科学 材料科学
- 频谱学是一种光谱学.
背景情况:
- 紫外线引起的发光 (UVL) 对于艺术品分析至关重要,有助于保存评估和材料识别.
- 目前的UVL应用在很大程度上是定性的,依赖于材料分析的专家解释.
- 在文化遗产中对UVL信号的定量解释仍然是一个重大挑战.
研究的目的:
- 开发一种用于解释艺术品中紫外线诱导的发光信号的定量方法.
- 在文化遗产研究的UVL分析中超越定性观测.
- 识别特定的图像材料及其在历史艺术作品中的应用.
主要方法:
- 为UVL获取设计了一个专门的实验设置.
- 从艺术品,艺术家调色板,草稿和准备样本中进行了UVL数据的统计比较.
- 采用UVL光谱技术进行材料表征.
主要成果:
- 在 Giuseppe Pellizza da Volpedo 的作品中成功确定了使用的材料及其应用领域,包括"Quarto Stato".
- 提供了支持使用特定颜料的定量数据,例如工业红色湖.
- 证明了开发的方法对各种艺术材料的一般有效性.
结论:
- 开发的方法使得在艺术分析中对UVL信号有了更多的定量理解.
- 这种方法有助于验证艺术品的真实性和理解历史艺术技巧.
- 这些发现为推进对文化遗产的科学研究提供了重大潜力.
相关概念视频
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
2.7K
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...
2.7K
Photoluminescence: Applications
406
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
406
Photoluminescence: Fluorescence and Phosphorescence
2.1K
Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
A pair of electrons in a...
2.1K
UV–Vis Spectrometers
1.4K
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.
1.4K
UV–Vis Spectroscopy: Molecular Electronic Transitions
1.5K
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...
1.5K
Variables Affecting Phosphorescence and Fluorescence
506
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
506


