Title :
Spectroscopy and terahertz imaging for sigillography applications
Author :
Younus, A. ; Delagnes, J.C. ; Canioni, L. ; Guillet, J.P. ; Mounaix, P. ; Fabre, M.
Abstract :
This study focuses on the seals of validation, sealing written documents, used in the Western Middle Ages, especially wax seals. We use THz spectroscopy and imaging for non-destructive evaluation of natural materials within those seals. Using a time domain THz spectroscopy and imaging system, THz transmission images are generated in the 0.1-3 THz range and demonstrate that the spectral properties of these materials allow to see across and under a thick layer of old wax.
Keywords :
nondestructive testing; sealing materials; spectral analysis; terahertz spectroscopy; terahertz wave imaging; terahertz wave spectra; waxes; THz transmission image; frequency 0.1 THz to 3 THz; natural material; nondestructive evaluation; sigillography application; spectral property; time domain THz imaging; time domain THz spectroscopy; wax seal; written document sealing; Cultural differences; Dielectrics; Imaging; Materials; Seals; Spectroscopy; Time domain analysis;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6379507
