| Autor: |
Andrea Marchetti, Victoria Beltran, Gert Nuyts, Ferenc Borondics, Steven De Meyer, Marina Van Bos, Jakub Jaroszewicz, Elke Otten, Marjolijn Debulpaep, Karolien De Wael |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Science Advances |
| ISSN: |
2375-2548 |
| DOI: |
10.1126/sciadv.abl6769 |
| Popis: |
Optical photothermal infrared (O-PTIR) is a recently developed molecular spectroscopy technique that allows to noninvasively obtain chemical information on organic and inorganic samples at a submicrometric scale. The high spatial resolution (approximate to 450 nm), lack of sample preparation, and comparability of the spectral results to traditional Fourier transform infrared spectroscopy make it a promising candidate for the analysis of cultural heritage. In this work, the potential of O-PTIR for the noninvasive characterization of small heritage objects (few cubic centimeters) is demonstrated on a series of degraded 16th century brass and glass decorative elements. These small and challenging samples, typically encountering limitations with existing noninvasive methods such as macroscopic x-ray powder diffraction and mu Raman, were successfully characterized by O-PTIR, ultimately identifying the markers of glass-induced metal corrosion processes. The results clearly demonstrate how O-PTIR can be easily implemented in a noninvasive multianalytical strategy for the study of heritage materials, making it a fundamental tool for cultural heritage analyses. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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