Journal
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES
Volume 38, Issue 4, Pages 413-424Publisher
SPRINGER
DOI: 10.1007/s10762-016-0347-9
Keywords
Terahertz time-domain spectroscopy; Imaging; Panel paintings; Fra Angelico
Funding
- Swiss National Science Foundation (SNSF) [P2SKP2_168321/1]
- Swiss National Science Foundation (SNF) [P2SKP2_168321] Funding Source: Swiss National Science Foundation (SNF)
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The side panels of the Franciscan Triptych (St. Jerome, St. John the Baptist, and the Archangel Gabriel and St. Francis, St. Onofrio, and the Virgin Annunciate, by Fra Angelico, before 1429) were scanned by means of terahertz time-domain imaging (THz-TDI). THz analysis supplied information on the stratigraphy of the panel paintings and the associated construction, gessoing and gilding techniques. Furthermore, THz-TDI provided information regarding the location of restoration materials within the painting stratigraphy on St. Jerome, St. John the Baptist, and the Archangel Gabriel, as well as on the extension and nature of subsurface cracks in the panel painting of St. Francis, St. Onofrio, and the Virgin Annunciate.
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