Characterization of photoluminescent and Raman properties of ultramarine blue pigment variants with a novel multimodal approachFrancesco Carta, Iacopo Osticioli, Daniele Ciofini, Silvia Rita Amato, Aviva Burnstock, Piercesare Secchi and Daniela ComelliEPJ Web Conf., 309 (2024) 14004DOI: https://doi.org/10.1051/epjconf/202430914004