Methodologies exploiting terahertz (THz) radiation are non-invasive and non-destructive. Furthermore, it is worth noting that THz waves can penetrate most non-metallic materials and biological tissues without causing ionization (THz photon energy in the order of 4.2 meV at 1 THz), thus ensuring the safety of biological tissues and materials under investigation. Additionally, some materials commonly present in Cultural Heritage artefacts (for example, parchment, paper, some varnishes, and binders, etc.) can be considered transparent in this spectral range, allowing for the selective identification of painting materials and mineral compounds on Cultural Heritage objects. Moreover, the portability and compactness of THz systems make these techniques potentially complementary methodologies for Cultural Heritage applications. However, there is still a lack in the existing datasets for substances of interest in the field of THz diagnostic. In this work, the optical properties of mineral compounds (i.e., atacamite, antlerite, etc.) are characterised for the first time by exploiting THz-based approaches. Furthermore, examples concerning the ability of THz spectroscopy to discriminate and quantify pure components in binary mixtures are reported. Another valuable application of THz-based techniques is represented by the identification of gaseous compounds (i.e., VOCs, GHGs) through THz spectroscopy. The selective and fast identification of these compounds is valuable in applications of preventive conservation and environmental monitoring. For example, the presence of some of the selected compounds in historical and archaeological contexts can envisage a selective tracer to detect fungal development and/or degradation byproducts of organic materials. Therefore, the results reported prove that THz-based approaches can represent innovative applications in the Cultural Heritage field.

Terahertz spectroscopy: a selective approach for diagnostic and preventive conservation in the Cultural Heritage field / Moffa, Candida; Merola, Camilla; Magboo, FERNANDO JUNIOR PIAMONTE; Giuliano, Lucia; Felici, Anna Candida; Palumbo, Luigi; Migliorati, Mauro; Petrarca, Massimo. - (2024), pp. 141-141. (Intervento presentato al convegno SYNC 2024 Symposium for Young Chemists: Innovation and Sustainability tenutosi a Department of Chemistry, Cannizzaro Building CU014 (Piazzale Aldo Moro 5), Sapienza University of Rome, Rome, Italy).

Terahertz spectroscopy: a selective approach for diagnostic and preventive conservation in the Cultural Heritage field

Candida Moffa;Camilla Merola;Fernando Jr Piamonte Magboo;Lucia Giuliano;Anna Candida Felici;Luigi Palumbo;Mauro Migliorati;Massimo Petrarca
2024

Abstract

Methodologies exploiting terahertz (THz) radiation are non-invasive and non-destructive. Furthermore, it is worth noting that THz waves can penetrate most non-metallic materials and biological tissues without causing ionization (THz photon energy in the order of 4.2 meV at 1 THz), thus ensuring the safety of biological tissues and materials under investigation. Additionally, some materials commonly present in Cultural Heritage artefacts (for example, parchment, paper, some varnishes, and binders, etc.) can be considered transparent in this spectral range, allowing for the selective identification of painting materials and mineral compounds on Cultural Heritage objects. Moreover, the portability and compactness of THz systems make these techniques potentially complementary methodologies for Cultural Heritage applications. However, there is still a lack in the existing datasets for substances of interest in the field of THz diagnostic. In this work, the optical properties of mineral compounds (i.e., atacamite, antlerite, etc.) are characterised for the first time by exploiting THz-based approaches. Furthermore, examples concerning the ability of THz spectroscopy to discriminate and quantify pure components in binary mixtures are reported. Another valuable application of THz-based techniques is represented by the identification of gaseous compounds (i.e., VOCs, GHGs) through THz spectroscopy. The selective and fast identification of these compounds is valuable in applications of preventive conservation and environmental monitoring. For example, the presence of some of the selected compounds in historical and archaeological contexts can envisage a selective tracer to detect fungal development and/or degradation byproducts of organic materials. Therefore, the results reported prove that THz-based approaches can represent innovative applications in the Cultural Heritage field.
2024
SYNC 2024 Symposium for Young Chemists: Innovation and Sustainability
04 Pubblicazione in atti di convegno::04d Abstract in atti di convegno
Terahertz spectroscopy: a selective approach for diagnostic and preventive conservation in the Cultural Heritage field / Moffa, Candida; Merola, Camilla; Magboo, FERNANDO JUNIOR PIAMONTE; Giuliano, Lucia; Felici, Anna Candida; Palumbo, Luigi; Migliorati, Mauro; Petrarca, Massimo. - (2024), pp. 141-141. (Intervento presentato al convegno SYNC 2024 Symposium for Young Chemists: Innovation and Sustainability tenutosi a Department of Chemistry, Cannizzaro Building CU014 (Piazzale Aldo Moro 5), Sapienza University of Rome, Rome, Italy).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1722144
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