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THz radiation is strongly absorbed, as well as reflected, by water. This spectral feature can be exploited to detect the presence of water under the surface of mural paintings and mosaics. In this study we report on the capability of our 3D reflective THz imaging system to detect water under samples simulating a fresco or a mosaic.
One of the main objectives of the THz-ARTE project is the construction of a portable THz imaging scanner, specifically designed to investigate mural paintings. Making of such a device and its use on an artwork will be presented.
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