在纸质档案文件中揭开隐藏的文本和数字,使用微空间偏移拉曼光谱成像技术
Marc Vermeulen1, Claudia Conti2, Pavel Matousek3
1The National Archives, Collection Care Department, Kew, Richmond TW9 4DU, UK.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
|December 20, 2024
概括
微空间偏移拉曼光谱法 (micro-SORS) 非侵入性地绘制历史文档中隐藏的文本和数字的图像. 这种先进的技术有助于通过揭示纸质文物中隐藏的细节来保护文化遗产.
科学领域:
- 分析化学 分析化学
- 遗产科学科学 遗产科学
- 频谱学是一种光谱学.
背景情况:
- 纸质档案文档对文化遗产至关重要,但往往包含隐藏或无法访问的信息.
- 之前的保护,施工或损坏可能会使文字和图像变得模糊.
- 需要使用非侵入性技术来访问这些隐藏的信息,而不会破坏文物.
研究的目的:
- 探索微空间偏移拉曼光谱法 (micro-SORS) 的潜力,用于成像纸质档案材料中的隐藏内容.
- 展示微SORS在识别颜料和破译模糊文本方面的应用.
- 评估化学测量分析在增强隐藏信息可视化方面的实用性.
主要方法:
- 使用微空间偏移拉曼光谱法 (micro-SORS) 来探测不透明纸质基板的下方或通过.
- 分析了拉曼信号,光辐射和光谱强度,考虑到样品的吸收.
- 应用化学测量分析以改善检测到的隐藏特征的可视化.
- 检查了历史文物,包括封闭的信件和玩卡.
主要成果:
- 成功地绘制了历史卡片中的红色素分布图.
- 从密封的历史信件中重建了隐藏的铁胆墨文字.
- 证明了微SORS识别色素和解读隐藏的墨水文字的能力.
- 通过化学测量分析展示了隐藏文本的增强可视化.
结论:
- 微空间偏移拉曼光谱 (micro-SORS) 是一种有价值的非侵入性工具,用于访问纸质文物中隐藏的信息.
- 该技术通过揭示隐藏的内容,有助于保存历史和文化遗产.
- 微-SORS通过提供对档案文档的新见解来支持历史研究,即使是具有挑战性的样本材料.
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