Assessment of in-depth degradation of artificially aged triterpenoid paint varnishes using nonlinear microscopy techniques.
The present work investigates the applicability of nonlinear imaging microscopy for the precise assessment of degradation of the outer protective layers of painted artworks as a function of depth due to aging. Two fresh and artificially aged triterpenoid varnishes, dammar and mastic, were tested. Nonlinear imaging techniques have been employed as a new diagnostic tool for determination of the exact thickness of the affected region due to artificial aging of the natural varnishes. The measured thicknesses differ from the calculated mean penetration depths of the samples. These nondestructive, high resolution modalities are valuable analytical tools for aging studies and they have the potential to provide unique in-depth information. Single photon laser induced fluorescence measurements and Raman spectroscopy were used for the integrated investigation and analysis of aging effects in varnishes.
1Institute of Electronic Structure and Laser,Foundation for Research and Technology Hellas,PO Box 1527,Heraklion 71110,Crete,Greece.
George
G
Filippidis
1Institute of Electronic Structure and Laser,Foundation for Research and Technology Hellas,PO Box 1527,Heraklion 71110,Crete,Greece.
Meropi
M
Mari
1Institute of Electronic Structure and Laser,Foundation for Research and Technology Hellas,PO Box 1527,Heraklion 71110,Crete,Greece.
Lambrini
L
Kelegkouri
1Institute of Electronic Structure and Laser,Foundation for Research and Technology Hellas,PO Box 1527,Heraklion 71110,Crete,Greece.
Aggelos
A
Philippidis
1Institute of Electronic Structure and Laser,Foundation for Research and Technology Hellas,PO Box 1527,Heraklion 71110,Crete,Greece.
Aleksandros
A
Selimis
1Institute of Electronic Structure and Laser,Foundation for Research and Technology Hellas,PO Box 1527,Heraklion 71110,Crete,Greece.
Kristallia
K
Melessanaki
1Institute of Electronic Structure and Laser,Foundation for Research and Technology Hellas,PO Box 1527,Heraklion 71110,Crete,Greece.
Maria
M
Sygletou
1Institute of Electronic Structure and Laser,Foundation for Research and Technology Hellas,PO Box 1527,Heraklion 71110,Crete,Greece.
Costas
C
Fotakis
D007091:Image Processing, Computer-Assisted; D008853:Microscopy / Q000379:methods*; D010150:Paint / Q000032:analysis*; D010151:Paintings; D014315:Triterpenes / Q000032:analysis*
D014315:Triterpenes
painted artworks