International Journal of Infrared and Millimeter Waves https://doi.org/10.1007/s10762-020-00733-y Characterization of Varnish Ageing and its Consequences on Terahertz Imagery: Demonstration on a Painting Presumed of the French Renaissance Q. Cassar1 · C. L....
More
International Journal of Infrared and Millimeter Waves https://doi.org/10.1007/s10762-020-00733-y Characterization of Varnish Ageing and its Consequences on Terahertz Imagery: Demonstration on a Painting Presumed of the French Renaissance Q. Cassar1 · C. L. Koch-Dandolo1 · J. P. Guillet1 · M. Roux2 · F. Fauquet1 · J. B. Perraud1 · P. Mounaix1 Received: 7 April 2020 / Accepted: 21 July 2020 / © Springer Science+Business Media, LLC, part of Springer Nature 2020 Abstract We report on advance developments of terahertz system data analysis for measuring the thicknesses of multiple films for non-contact control in heritage science. We pro- vide the analysis of time-domain data regarding the measurements conducted on a French Renaissance painting realized on a copper substrate. The piece of art is made of a varnish layer deposited on the different painting layers. We specifically focus on the dielectric characterization of the varnish layer and its ageing consequences on THz images that are a
Less
