Discovering Hidden Painted Images: Subsurface Imaging Using Microscale Spatially Offset Raman Spectroscopy
Discovering Hidden Painted Images: Subsurface Imaging Using Microscale Spatially Offset Raman Spectroscopy
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DOI：
10.1021/acs.analchem.6b03548
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发表时间：
2017-01-03
影响因子：
7.4
通讯作者：
Matousek, Pavel
中科院分区：
文献类型：
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作者：
Botteon, Alessandra;Conti, Claudia;Matousek, Pavel
我们首次证明了微空间偏移拉曼光谱（micro-SORS）的映射能力。该技术能够通过高度混浊的覆盖层形成薄子层的非侵入性图像。该方法从概念上证明了恢复在传统的拉曼显微镜无法可视化的子层的情况下，在油漆的图像。这些标本模仿了文化遗产中遇到的真实的情况，例如，隐藏的绘画被涂鸦破坏或被叠加的绘画层或粉刷覆盖。此外，使用字母作为隐藏图像，我们证明了micro-SORS也有可能重建隐藏的文字，例如，用纸张覆盖，不能轻易去除。潜在的应用还可以包括其他学科，如聚合物、生物、催化和法医科学，其中薄的、高度浑浊的=层掩盖了化学上不同的表面下结构。
We demonstrate for the first time the mapping capability of micro-spatially offset Raman spectroscopy (micro-SORS). The technique enables to form noninvasive images of thin sublayers through highly turbid overlayers. The approach is conceptually demonstrated on recovering over painted images in situations where conventional Raman microscopy was unable to visualize the sublayer. The specimens mimic real situations encountered in Cultural Heritage that deal, for example, with hidden paintings vandalized with graffiti or covered by superimposed painted layers or whitewash. Additionally, using a letter as a hidden image, we demonstrated the micro-SORS potential to reconstruct also a hidden writing covered, for example, with paper sheets that cannot be easily removed. Potential applications could also include other disciplines such as polymers, biological, catalytic, and forensic sciences where thin, highly turbid =layers mask chemically distinct subsurface structures.