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Time‐domain imaging system in the terahertz range for immovable cultural heritage materials
Authors:David Giovannacci  Hoi Ching Cheung  Gillian C Walker  John W Bowen  Dominique Martos‐Levif  Didier Brissaud  Lilian Cristofol  Yannik Mlinge
Affiliation:David Giovannacci,Hoi Ching Cheung,Gillian C. Walker,John W. Bowen,Dominique Martos‐Levif,Didier Brissaud,Lilian Cristofol,Yannik Mélinge
Abstract:In the field of cultural heritage science, the use of non‐destructive and contact‐free techniques has increased sharply over the past 10 years. Compared with conventional spectroscopic and imaging techniques such as X‐ray, ultraviolet, infrared, and laser spectroscopy, terahertz time‐domain imaging (THz‐TDI) is an innovative, non‐invasive, and safe technique, which provides good penetration depth (~1 cm) and broad spectral bandwidth (0.1–10 THz). This paper sets out the protocol and methodology for the application of THz‐TDI to immovable cultural heritage, illustrated by a series of case studies. The case studies demonstrate the efficacy of the technique in providing structural and material information for conservators.
Keywords:case studies  immovable cultural heritage  terahertz  time domain
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