反射光谱作为一种用于测量涂料层厚度的新工具
Alice Dal Fovo1, Marina Martínez-Weinbaum2, Mohamed Oujja2
1Consiglio Nazionale delle Ricerche-Istituto Nazionale di Ottica (CNR-INO), Largo E. Fermi 6, 50125 Florence, Italy.
Molecules (Basel, Switzerland)
|June 28, 2023
概括
这项研究引入了一种使用分散反射光谱 (DRS) 的新方法,用于在遗产科学中非侵入性地测量烯酸漆层的厚度. 这些发现表明光谱数据和层厚度之间的相关性,使得准确的横截面分析.
科学领域:
- 遗产科学科学 遗产科学
- 分析化学 分析化学
- 艺术保护 艺术保护
背景情况:
- 对绘画的非侵入性横截面分析对遗产科学至关重要.
- 油漆中的不透明介质阻碍了传统的低能探测技术,用于信号透和收集.
- 在测量异质涂料层微米厚度的非侵入性技术中存在差距.
研究的目的:
- 探索分散反射光谱 (DRS) 的潜力,从油漆层中提取层级信息.
- 建立一种非侵入性的方法来测量烯酸漆层的微米厚度.
- 开发基于光谱数据的厚度评估校准曲线.
主要方法:
- 在十种纯烯酸漆单层上测试了分散反射光谱 (DRS).
- 使用微拉曼和激光诱导分解光谱学来描述油漆的化学成分.
- 使用光纤光学反射光谱 (FORS) 和Vis-NIR多光谱反射成像分析了光谱行为.
- 使用光学一致性断层扫描 (OCT) 测量参考厚度.
主要成果:
- 证明了烯酸油漆层的光谱反应与其微米厚度之间的明显相关性.
- 开发了指数函数,用于每个油漆类型的反射率与厚度相关.
- 建立了基于光谱特征的非侵入性厚度测量的校准曲线.
结论:
- 分散反射光谱 (DRS) 在遗产科学中显示出对涂料层厚度的非侵入性,横截面分析的前景.
- 开发的光谱校准曲线为烯酸油漆的定量厚度测量提供了一个新的方法.
- 这种方法促进了文化遗产中异质材料的非侵入性表征.
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