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Terahertz Spectroscopy and Quantum Mechanical Simulations of Crystalline Copper-Containing Historical Pigments

Terahertz spectroscopy is a non-destructive analytical technique used in art conservation and restoration. It can provide compelling data concerning the composition and condition of culturally valuable and historical objects. Terahertz spectral databases of modern and ancient artists’ pigments exist, but lack explanations for the origins of the unique spectral features.

This paper present terahertz spectra of solid azurite, malachite, and verdigris, along with simulations of their crystalline structures and terahertz lattice vibrations.

Terahertz spectrum of historical pigments


https://www.researchgate.net/publication/330489825_Terahertz_Spectroscopy_and_Quantum_Mechanical_Simulations_of_Crystalline_Copper-Containing_Historical_Pigments

Kleist, E. M., Koch Dandolo, C. L., Guillet, J. P., Mounaix, P., & Korter, T. M. (2019). Terahertz Spectroscopy and Quantum Mechanical Simulations of Crystalline Copper-Containing Historical Pigments. The Journal of Physical Chemistry A.

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Skeletonization and 3D rendering with real time terahertz tomography

In this collaborative article between Lytid, IMS and Noctylio, we explore the application of terahertz (THz) technology in tomography to create 3D reconstructions in real time. The experimental setup is based on a latest generation micro-bolometric camera with 240×320 pixels, equipped with an anti-reflective coated lens developed by Lytid, to record the projection images of…

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Feasibility of Using a 300 GHz Radar to Detect Fractures and Lithological Changes in Rocks

This article examines the possibility of using a high frequency radar (300 GHz) to detect fractures and lithological changes in rocks. This study, carried out in collaboration between Federico Sanjuan (University of Pau, France) and the IMS laboratory (University of Bordeaux), is in the context of the improvement of the methods of detection and quantification…

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Terahertz diffractive imaging with saturated data inpainting

This article focuses on improving diffraction imaging techniques in the field of Térahertz frequencies, by approaching the problem of data saturation due to the limited dynamic range of detection systems. We introduce with the ITMO team (Nikolay V Petrov Team) a new approach to algorithmic reconstruction which deals with saturated areas in the measured intensity…