Fig. 8
From: Understanding and optimizing Evolon® CR for varnish removal from oil paintings
a FT-LSI time traces recorded after 10, 90 and 300 s Evolon\(^\circledR\) CR (51\(\%\) ethanol) exposure on an unvarnished paint model. With increasing Evolon\(^\circledR\) CR exposure, the decay becomes slower. We quantify the decay time as following: the time it takes (X) after removing the Evolon\(^\circledR\) CR, to decay to 80\(\%\) of the maximum signal intensity (dashed line). b The relationship between the Evolon\(^\circledR\) CR exposure time and the FT-LSI decay time for varnished and unvarnished paint models. In both cases the decay time increases with increased Evolon\(^\circledR\) CR exposure time, but for the varnished paint models the measured dynamics are much lower