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Unveiling the layers of history: a hybrid profiling approach for the characterisation of heritage objects

M. DINU1,* , L. GHERVASE1, L. C. RATOIU1, I. M. CORTEA1, L. M. ANGHELUTA1, A. M. PATRASCU1, C. M. STANCU1, V. A. CRISTEA1

Affiliation

  1. National Institute of Research and Development for Optoelectronics INOE 2000, Măgurele, Ilfov, 077125, Romania

Abstract

This article presents an innovative analytical setup that integrates advanced optoelectronic methods: hyperspectral imaging, Raman spectroscopy, and Laser-Induced Breakdown Spectroscopy (LIBS) to create a comprehensive real-time "profile" of heritage objects. By leveraging macroscopic hyperspectral imaging for initial material identification and pixel-by-pixel analysis for detailed composition, the hybrid setup proceeds to micron-level insights through Raman spectroscopy, culminating in stratigraphic data from LIBS. The novel "profiler" method synchronizes these complementary techniques, enabling the collection of a rich, layered dataset that correlates spectral data to precise material depths for each LIBS pulse..

Keywords

Hybrid, Polychrome, Multi-layer, LIBS, Raman, HIS.

Submitted at: Nov. 5, 2024
Accepted at: Dec. 2, 2024

Citation

M. DINU, L. GHERVASE, L. C. RATOIU, I. M. CORTEA, L. M. ANGHELUTA, A. M. PATRASCU, C. M. STANCU, V. A. CRISTEA, Unveiling the layers of history: a hybrid profiling approach for the characterisation of heritage objects, Journal of Optoelectronics and Advanced Materials Vol. 26, Iss. 11-12, pp. 512-522 (2024)