Abstract
Nonlinear optical microscopies (NLOMs) are innovative techniques recently introduced in the field of cultural heritage for the non-invasive in-depth analysis of artworks. In this review, we report on the state-of-the-art of NLOMs on different artistic materials, i.e., varnish, glue, paint, wood, parchment, and metal, and we evaluate the potential and capabilities of NLOMs in comparison with other more established linear optical techniques. We also discuss the latest studies defining suitable measurement conditions and instrumental requirements for the safe and in situ application of NLOMs on real cases.
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Notes
The characteristic atomic electric field strength is Eat = e/(4πε0α02) = 5.14 × 1011 V/m, where e is the charge of the electron and α0 is the Bohr radius of the hydrogen atom. (R. W. Boyd, 2003 [90]).
For example, rhodamine 6G has a σ2ωQf of 40 Göppert-Mayer units (GM; 1 GM = 10 − 50 cm4 s/photon) at 830 nm.
Abbreviations
- 2PEF:
-
Two-photon excitation fluorescence
- 3PEF:
-
Three-photon excitation fluorescence
- AFM:
-
Atomic force microscope
- CH:
-
Cultural Heritage
- CLSM:
-
Confocal laser scanning microscopy
- CMC:
-
Carboxy-methyl cellulose
- CRM:
-
Confocal Raman microscopy
- FLIM:
-
Fluorescence lifetime imaging microscopy
- FORS:
-
Fibre optics reflectance spectroscopy
- IC:
-
Internal conversion
- IRR:
-
Infrared reflectography
- ISC:
-
Inter-system crossing
- LIF:
-
Laser induced fluorescence
- MPEF:
-
Multi-photon excitation fluorescence
- NA:
-
Numerical aperture
- nanoIR:
-
IR nanoscopy
- NIR:
-
Near infrared
- NLOM:
-
Nonlinear optical microscopy
- NMR:
-
Nuclear magnetic resonance
- OCT:
-
Optical coherence tomography
- OM:
-
Optical microscopy
- OPO:
-
Optical parametric oscillator
- PA:
-
Photoacoustic
- PAcSA:
-
Photoacoustic signal attenuation
- PIXE:
-
Particle-induced X-ray emission
- PMMA:
-
Poly-methyl methacrylate
- PMT:
-
Photomultiplier tubes
- PSHG:
-
Polarization-resolved second harmonic generation
- RF:
-
Radio frequency
- SHG:
-
Second harmonic generation
- SORS:
-
Spatially offset Raman spectroscopy
- THG:
-
Third harmonic generation
- THz-TDS:
-
Terahertz time-domain spectroscopy
- VR:
-
Vibrational relaxation
- XRF:
-
X-ray fluorescence
References
K. Groen, In: The First Ten Years: The Examination and Conservation of Paintings, 1977– to 1987, ed. by I. McClure (The Hamilton Kerr Institute of the Fitzwilliam Museum. University of Cambridge, Cambridge, 1988) Vol. 1, pp. 48–65.
W.C. McCrone, JAIC 33(2), 101–114 (1994)
M.H. Butler, Microscope 21, 101 (1973)
M.H. Butler, Polarized Light Microscopy in the Conservation of Painting (State Microscopical Society of Illinois, Chicago, 1970)
J. S. Martin, in Postprints of the Wooden Artifacts Group, Amer. Inst. for Conservation of Historic and Artistic Works, Wooden Artifacts Group, 1996, pp. 19–21
N. Bäschlin, Zeitschrift für Kunsttechnologie und Konservierung 8(2), 318–339 (1994)
K. Janssens, R. Van Grieken, Elsevier Sci. 42, 828 (2004)
E. Ciliberto, G. Spoto, in Modern analytical methods in art and archaeology, Vol. 155 in the Chemical Analysis Series (John Wiley & Sons, New York, 2000), pp. 755. ISBN 0 471 29361 X
C. Lehanier, Mikrochim. Acta 104, 245–254 (1991)
N. Khandekar, Stud. Conserv. 48(sup1), 52–64 (2003)
J. Striova, A. Dal Fovo, R. Fontana, La Rivista del Nuovo Cimento 43, 515–566 (2020)
S. Jane, R. Barker, J. Chad, USA Microsc. Anal. 55, 31 (1995)
R. Barker, J. Chad, S. Jane, Pict. Restor. 11, 8–11 (1997)
C. Daffara, R. Fontana, L. Pezzati, Proc. SPIE 7391 (2009).
T. Arecchi, M. Bellini, C. Corsi, R. Fontana, M. Materazzi, L. Pezzati, A. Tortora, Proc. SPIE 5857, 278–282 (2005)
H. Liang, M. Gomez-Cid, R.G. Cucu, G.M. Dobre, A.G. Podoleanu, J. Pedro, D. Saunders, Opt. Express 13, 6133–6144 (2005)
P. Targowski, B. Rouba, M. Wojtkowski, A. Kowalczyk, Stud. Conserv. 49(2), 107–114 (2004)
M.-L. Yang, A.M. Winkler, J.K. Barton, P.B. Vandiver, Archaeometry 51, 808 (2009)
M. Hughes, PhD thesis, University of Kent in Canterbury (2010), http://www.mike-hughes.org/files/phd_oct_for_art.pdf Accessed: 31 Mar 2011
P. Targowski, M. Iwanicka, L. Tyminska-Widmer, M. Sylwestrzak, E.A. Kwiatkowska, Acc. Chem. Res. 43(6), 826–836 (2010)
P. Targowski, M. Iwanika, Appl. Phys. A 106, 265–277 (2012)
D.C. Adler, J. Stenger, I. Gorczynska, H. Lie, T. Hensick, R. Spronk, S. Wolohojian, N. Khandekar, J.Y. Jiang, S. Barry, Opt. Express 15, 15972 (2007)
M. Hughes, D.A. Jackson, A.G. Podoleanu, Proc. SPIE 7139, 713917 (2008)
S. Chang, Y. Mao, C. Flueraru, G. Chang, Opt. Eng. 49, 063602 (2010)
G. Latour, J. Moreau, M. Elias, J.-M. Frigerio, Proc. SPIE 6618, 661806 (2007)
G. Latour, G. Georges, L. Siozade, C. Deumié, J.-P. Echard, Proc. SPIE 7391, 73910J (2009)
G. Latour, J.P. Echard, B. Soulier, I. Emond, S. Vaiedelich, M. Elias, Appl. Opt. 48, 6485 (2009)
I. Gurov, A. Karpets, N. Margariants, E. Vorobeva, Proc. SPIE 6618, 661807 (2007). https://doi.org/10.1117/12.726315
P. Targowski, M. Iwanicka, M. Sylwestrzak, C. Frosinini, J. Striova, R. Fontana, Angew. Chem. 57, 7396–7400 (2018)
R. Fontana, A. Dal Fovo, J. Striova, L. Pezzati, E. Pampaloni, M. Raffaelli, M. Barucci, Appl. Phys. A 121, 957–966 (2015)
J. Striova, A. Dal Fovo, V. Fontani, M. Barucci, E. Pampaloni, M. Raffaelli, R. Fontana, Microchem. J. 138, 65–71 (2018)
B. Kanngiesser, W. Malzer, A. Fuentes-Rodriguez, I. Reiche, Spectrochim. Acta B 60, 41–47 (2005)
B. Kanngiesser, A.G. Karydas, R. Schütz, D. Sokaras, I. Reiche, S. Röhrs, L. Pichon, J. Salomon, Nucl. Instr. Methods Phys. Res. B 264, 383–388 (2007)
B. Kanngiesser, W. Malzer, I. Mantouvalou, D. Sokaras, A.G. Karydas, Appl. Phys. A 106, 325–338 (2012)
A.R. Woll, J. Mass, C. Bisulca, M. Cushman, C. Griggs, T. Wazny, N. Ocon, Stud. Cons. 53(2), 93–109 (2013)
X. Wei, Y. Lei, T. Sun, X. Lin, Q. Xu, D. Chen, Y. Zou, Z. Jiang, Y. Huang, X. Yu, X. Ding, H. Xu, X-ray Spectrom. 37, 595–598 (2008). https://doi.org/10.1002/xrs.1098
N. Grassi, A. Migliori, P.A. Mandò, H. Calvo del Castillo, X-ray Spectrom. 34(4), 306–309 (2005)
G. Turrell, P. Dhamelincourt, in Modern Techniques in Raman Spectroscopy, edited by J.J. Laserna (John Wiley and Sons, Surrey, 1996 (Chapter 4))
G. Lorenzetti, J. Striova, A. Zoppi, E.M. Castellucci, J. Mol. Struct. 993, 97–103 (2011)
F. Casadio, C. Daher, L. Bellot-Gurlet, Top. Curr. Chem. (Z) 374, 62 (2016). https://doi.org/10.1007/s41061-016-0061-z
C. Conti, C. Colombo, M. Realini, G. Zerbi, P. Matousek, Appl. Spect. OA 68, 686–691 (2014)
C. Conti, A. Botteon, C. Colombo, D. Pinna, M. Realini, P. Matousek, J. Cult. Herit. 43, 319–328 (2020). https://doi.org/10.1016/j.culher.2019.12.003
C. Rehorn, B. Blgmich, Cultural Heritage studies with mobile NMR. Angew. Chem. Int. Ed. 57, 7304–7312 (2018)
B. Blümich, J. Perlo, F. Casanova, Prog. Nucl. Magn. Reson. Spectrosc. 52, 197–269 (2008)
S. Sfakianaki, E. Kouloumpi, D. Anglos, A. Spyros, Magn. Reson. Chem. 53, 22–26 (2015)
B. Blümich, J. Mod. Magn. Reson. 927–958 (2018).
R. Cignini, R. Melzi, F. Tedoldi, C. Casieri, F. De Luca, Magn. Reson. Imaging 24, 813–818 (2006)
G. R. Fife, B. Stabik, B. Blgmich, R. Hoppenbrouwers, T. Meldrum, in The Noninvasive Analysis of Painted Surfaces: Scientific Impact and Conservation Practice (Eds.: A. Nevin, T. Doherty), (Smithsonian Institution Scholary Press, Washington 2016)
F. Presciutti, J. Perlo, F. Casanova, S. Glöggler, C. Miliani, B. Blümich, B.G. Brunetti, A. Sgamellotti, Appl. Phys. Lett. 93, 033505 (2008)
A.J.L. Adam, P.C.M. Planken, S. Meloni, J. Dik, Opt. Express 17(5), 3407–3416 (2009)
M. Picollo, K. Fukunaga, J. Labaune, J. Cult. Herit. 16, 73–80 (2015)
K. Fukunaga, Springer (2016). https://doi.org/10.1007/978-4-431-55885-9
J. Dong, A. Locquet, M. Melis, D.S. Citrin, Sci. Rep. 7, 15098 (2017)
G.J. Tserevelakis, I. Vrouvaki, P. Siozos, K. Melessanaki, K. Hatzigiannakis, C. Fotakis, G. Zacharakis, Sci. Rep. 7, 747 (2017)
G.J. Tserevelakis, P. Siozos, A. Papanikolaou, K. Melessanaki, G. Zacharakis, Ultrasonics 98, 94–98 (2019)
G.J. Tserevelakis, A. Dal Fovo, K. Melessanaki, R. Fontana, G. Zacharakis, J. Appl. Phys. 123, 123102–123109 (2018). https://doi.org/10.1063/1.5022749
A. Dal Fovo, G.J. Tserevelakis, A. Papanikolaou, G. Zacharakis, R. Fontana, Opt. Letters 44, 919–922 (2019). https://doi.org/10.1364/OL.44.000919
G.J. Tserevelakis, V. Tsafas, K. Melessanaki, G. Zacharakis, G. Filippidis, Opt. Lett. 44, 1154–1157 (2019)
E. Gratton, N.P. Barry, S. Beretta, A. Celli, Methods 25(1), 103–110 (2001)
R. Gauderon, P.B. Lukins, C.J.R. Sheppard, Micron 32(7), 691–700 (2001)
D. Oron, D. Yelin, E. Tal, S. Raz, R. Fachima, Y. Silberberg, J. Struct. Biol. 147(1), 3–11 (2004)
E. B. Van Munster, T. W. J. Gadella, fluorescence lifetime imaging microscopy (FLIM). In: Rietdorf J. (eds) Microscopy Techniques. Advances in Biochemical Engineering, vol 95. (Springer, Berlin, Heidelberg 2005). https://doi.org/10.1007/b102213
F.E. Robles, J.W. Wilson, M.C. Fischer, W.S. Warren, Opt. Express 20(15), 17082–17092 (2012)
M.C. Fischer, J.W. Wilson, F.E. Robles, W.S. Warren, Rev. Sci. Instrum. 87(3), 031101 (2016). https://doi.org/10.1063/1.4943211
E. Gavgiotaki, V. Tsafas, S. Bovasianos, S. Agelaki, V. Georgoulias, M. Tzardi, I. Athanassakis, G. Filippidis,. Proc. SPIE 11076, Advances in Microscopic Imaging II, 110760I (22 July 2019)
S. You, H. Tu, E.J. Chaney, Y. Sun, Y. Zhao, A.J. Bower, Y.Z. Liu, M. Marjanovic, S. Sinha, Y. Pu, S.A. Boppart, Nat. Commun. 9(1), 1–9 (2018)
D. Tokarz, R. Cisek, M.N. Wein, R. Turcotte, C. Haase, S.C.A. Yeh, S. Bharadwaj, A.P. Raphael, H. Paudel, C. Alt, T.M. Liu, H.M. Kronenberg, C.P. Lin, PLoS ONE 12(10), e0186846 (2017)
V. Tsafas, E. Gavgiotaki, M. Tzardi, E. Tsafa, C. Fotakis, I. Athanassakis, G. Filippidis, J. Biophoton. 13(10), e202000180 (2020)
R. Gueta, E. Tal, Y. Silberberg, I. Rousso, J. Struct. Boil. 159, 103–110 (2007)
D.A. Dombeck, M. Blanchard-Desce, W. Webb, J. Neurosci. 24, 999–1003 (2004)
W. Denk, J. Strickler, W. Webb, Science 248, 73–76 (1990)
A. Diaspro, P. Bianchini, G. Vicidomini, M. Faretta, P. Ramoino, C. Usai, Biomed. Eng. Online 5, 36 (2006)
M. Mari, G. Filippidis, Sustainability 12, 1409 (2020)
H. Liang, M. Mari, C.S. Cheung, S. Kogou, P. Johnson, G. Filippidis, Opt. Express 25, 19640–19653 (2017)
G. Filippidis, G.J. Tserevelakis, A. Selimis, C. Fotakis, Appl. Phys. A 118, 417–423 (2015)
G. Latour, J.P. Echard, M. Didier, M.C. Schanne-Klein, Opt. Express 20, 24623–24635 (2012)
G. Filippidis, M. Massaouti, A. Selimis, E.J. Gualda, J.M. Manceau, S. Tzortzakis, Appl. Phys. A 106(2), 257–263 (2012)
G. Filippidis, M. Mari, L. Kelegkouri, A. Philippidis, A. Selimis, K. Melessanaki, M. Sygletou, C. Fotakis, Microsc. Microanal. 21, 510–517 (2015)
M. Oujja, S. Psilodimitrakopoulos, E. Carrasco, M. Sanz, A. Philippidis, A. Selimis, P. Pouli, G. Filippidis, M. Castillejo, Phys. Chem. Chem. Phys. 19, 22836–22843 (2017)
A. Dal Fovo, M. Sanz, M. Oujja, R. Fontana, S. Mattana, R. Cicchi, P. Targowski, M. Sylwestrzak, A. Romani, C. Grazia, G. Filippidis, S. Psilodimitrakopoulos, A. Lemonis, M. Castillejo, Sustainability 12(9), 3831 (2020)
T.E. Villafana, W.P. Brown, J.K. Delaney, M. Palmer, W.S. Warren, M.C. Fischer, Proc. Natl. Acad. Sci. USA 111, 1708–1713 (2014)
T.E. Villafana, W. Brown, W.S. Warren, M. Fischer, Proc. SPIE 9527, 9 (2015)
A. Dal Fovo, R. Fontana, J. Striova, E. Pampaloni, M. Barucci, M. Raffaelli, R. Mercatelli, L. Pezzati, R. Cicchi, in Proceedings of LACONA XI Lasers in the Conservation of Artworks XI, P. Targowski et al. (Eds), NCU Press Torun (2017)
A. Dal Fovo, M. Oujja, M. Sanz, A. Martínez-Hernández, M.V. Cañamares, M. Castillejo, R. Fontana, Spectrochim. Acta A 208, 262–270 (2018)
A. Dal Fovo, M. Sanz, M. Oujja, S. Mattana, M. Marchetti, R. Cicchi, R. Fontana, M. Castillejo, Microchem. J 154, 104568 (2020)
F. Faraldi, G.J. Tserevelakis, G. Filippidis, G.M. Ingo, C. Riccucci, C. Fotakis, Appl. Phys. A 111, 177–181 (2013)
S. Psilodimitrakopoulos, E. Gavgiotaki, K. Melessanaki, V. Tsafas, G. Filippidis, Microsc. Microanal. 22(5), 1072 (2016)
S. Psilodimitrakopoulos, L. Mouchliadis, I. Paradisanos, A. Lemonis, G. Kioseoglou, E. Stratakis, Light Sci. Appl. 7(5), 18005–18005 (2018)
M. Schmeltz, L. Robinet, S. Thao, C. Teulon, G. Ducourthial, M. C. Schanne-Klein, G. Latour, The potential of nonlinear optical microscopy to noninvasively quantify the degradation state of historical parchments (Conference Presentation). In Optics for Arts, Architecture, and Archaeology VII (Vol. 11058, p. 1105809). International Society for Optics and Photonics (2019).
R.W. Boyd, Nonlinear Optics, Second Edition (The institute of optics University of Rochester, Academic Express, New York, 2003)
P. Franken, A. Hill, C. Peters, G. Weinreich, Phys. Rev. Lett. 7(4), 118–119 (1961). https://doi.org/10.1103/PhysRevLett.7.118
B.R. Masters, P.T.C. So (eds.), Handbook of Biomedical Nonlinear Optical Microscopy (Oxford University Press, New York, 2008), p. 896. (ISBN13:978-–0195162608)
M. Bass, P.A. Franken, J.F. Ward, Phys. Rev 138, A534–A542 (1965)
M. Oheim, D.J. Michael, M. Geisbauer, D. Madsen, R.H. Chow, Adv. Drug. Deliv. Rev. 58(7), 788–808 (2006)
R. Hristu, S.G. Stanciu, D.E. Tranca, G.A. Stanciu, J. Biophoton. 10(9), 1171–1179 (2017)
G. New, in Introduction to Nonlinear Optics, (Cambridge University Press, 2011). https://doi.org/10.1017/CBO9780511975851
T.Y.F. Tsang, Phys. Rev. A 52, 4116–4125 (1995)
Y. Barad, H. Eisenberg, M. Horowitz, Y. Silberberg, Appl. Phys. Lett. 70, 922–924 (1997)
J.A. Squier, M. Müller, G.J. Brakenhoff, K.R. Wilson, Opt. Express 3(9), 315–324 (1998)
D. Débarre, N. Olivier, E. Beaurepaire, Opt. Express 15(14), 8913–8924 (2007)
M. A. Omary, H. H. Patterson, in Luminescence, theory, reference module in chemistry, molecular sciences and chemical engineering, encyclopedia of spectroscopy and spectrometry (Third Edition), (Elsevier, 2017), pp 636–653 https://doi.org/10.1016/B978-0-12-803224-4.00193-X
M. Göppert-Mayer, Ann. Phys. 9(3), 273–295 (1931)
C. Albrecht, R.J. Lakowicz, Anal. Bioanal Chem 390, 1223–1224 (2008)
J. Squier, M. Muller, Rev. Sci. Instrum. 72, 2855–2867 (2001)
D.E. Spence, P.N. Kean, W. Sibbett, Opt. Lett. 16, 42 (1991)
M. Born, E. Wolf, Principles of Optics, 6th edn. (Pergamon, Oxford, 1980)
S. Psilodimitrakopoulos, L. Mouchliadis, I. Paradisanos, G. Kourmoulakis, A. Lemonis, G. Kioseoglou, E. Stratakis, Sci. Rep. 9, 14285 (2019)
M. Marchetti, E. Baria, R. Cicchi, F. Pavone, Methods Protoc. 2, 51 (2019)
R. Cicchi, L. Sacconi, A. Jasaitis, R.P. O’Connor, D. Massi, S. Sestini, V. De Giorgi, T. Lotti, F.S. Pavone, Appl. Phys. B 92, 359–365 (2008)
P.J. Campagnola, A.C. Millard, M. Terasaki, P.E. Hoppe, C.J. Malone, W.A. Mohler, Biophys. J. 82, 493–508 (2002)
E.J. Gualda, G. Filippidis, G. Voglis, M. Mari, C. Fotakis, N. Tavernarakis, J. Microsc. 229, 141–150 (2008)
D. Debarre, W. Supatto, A.M. Pena, A. Fabre, T. Tordjmann, L. Combettes, M.C. Schanne-Klein, E. Beaurepaire, Nat. Methods 3, 47–53 (2006)
G. Filippidis, E.J. Gualda, K. Melessanaki, C. Fotakis, Opt. Lett. 33, 3 (2008)
M. Mari, V. Tsafas, K. Melessanaki, G. Filippidis, Insight 60(12), 663–669 (2018)
E.J. Gualda, G. Filippidis, K. Melessanaki, C. Fotakis, Appl. Spec. 63, 280 (2009)
A. Nevin, D. Comelli, I. Osticioli, G. Filippidis, K. Melessanaki, G. Valentini, R. Cubeddu, C. Fotakis, Appl. Phys. A 100, 599–606 (2010)
N.S. Cohen, M. Odlyha, R. Campana, G.M. Foster, Thermochim. Acta. 365, 45–52 (2000)
D. Saunders, L. Kirby, Conservator 25, 95–104 (2001)
G. Filippidis, K. Melessanaki, C. Fotakis, Anal. Bioanal. Chem. 395(7), 2161–2166 (2009)
G.W. White, Microscope 18, 51–59 (1970)
T. Ye, D. Fu, W.S. Warren, Photochem. Photobiol. 85(3), 631–645 (2009)
A. Selimis, P. Vounisiou, G. J. Tserevelakis, K. Melessanaki, P. Pouli, G. Filippidis, C. Beltsios, S. Georgiou, C. Fotakis, SPIE Europe 2009 Optical Metrology O3A (2009)
P. Vounisiou, A. Selimis, G.J. Tserevelakis, K. Melessanaki, P. Pouli, G. Filippidis, C. Beltsios, S. Georgiou, C. Fotakis, Appl. Phys. A 100, 647–652 (2010)
D. Ciofini, M. Oujja, M.V. Canamares, S. Siano, M. Castillejo, Microchem. J. 124, 792 (2016)
M. Fujita, H. Harada, Ultrastructure and formation of wood cell wall, in: D.N.S. Hon, N. Shiraishi (Eds.), Wood and Cellulosic Chemistry, Marcel Dekker (2001)
A. Rencurosi, J. Rohrling, J. Pauli, A. Potthast, C. Jager, S. Pÿrez, P. Kosma, A. Imberty, Angew. Chem. Int. Ed. 22, 41 (2002)
G. Cox, N. Moreno, J. Feijó, J. Biomed. Opt. 10(2), 024013–024016 (2005)
L.A. Donaldson, K. Radotic, J. Microsc. 251(2), 178–187 (2013)
G. Mizutani, Y. Sonoda, H. Sano, M. Sakamoto, T. Takahashi, S. Ushioda, J. Lumin. 87, 824–826 (2000)
S.-W. Chu, I.-H. Chen, T.-M. Liu, P.C. Chen, C.-K. Sun, Opt. Lett. 26, 1909–1911 (2001)
A.C. Millard, P.J. Campagnola, Opt. Lett. 28, 22 (2003)
I. Gusachenko, V. Tran, Y.G. Houssen, J.-M. Allain, M.-C. Schanne-Klein, Biophys. J. 102(9), 2220–2229 (2012)
L. Robinet, S. Thao, M. C. Schanne-Klein, G. Latour, The influence of manufacturing and alterations on skin-based artifacts as characterized by nonlinear optical microscopy. ICOM-CC 18th Triennial Conference 2017 Copenhagen, Sep 2017, Copenhague, Denmark. pp.1609. hal-01761403
G. Latour, L. Robinet, A. Dazzi, F. Portier, A. Deniset-Besseau, M.C. Schanne-Klein, Sci. Rep. 6(1), 1–10 (2016)
A. Dazzi, C.B. Prater, Q. Hu, D.B. Chase, J.F. Rabolt, C. Marcott, Appl. Spectrosc. 66(12), 1365–1384 (2012)
J. Shank and J. W. E. Crumley, Artists’ Pigments. A Handbook of their History and Characteristics, vol. 1–4, ed. by Robert L. Feller, (Leonardo, 1989)
Acknowledgements
This research has been funded by Regione Toscana (POR FSE 2014-2020, “Giovanisì”, Intervention Program “CNR4C”, CUP B15J19001040004), by the Spanish State Research Agency (AEI) through project PID2019-104124RB-I00/ AEI /1.0.13039/501100011033, by the TOP Heritage-CM (S2018/NMT-4372) program, by the H2020 European project IPERION HS (Integrated Platform for the European Research Infrastructure ON Heritage Science, GA 871034) and is supported by CSIC Interdisciplinary Platform “Open Heritage: Research and Society” (PTI-PAIS). Collaborations with Drs Mohamed Oujja and Mikel Sanz are gratefully acknowledged.
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Dal Fovo, A., Castillejo, M. & Fontana, R. Nonlinear optical microscopy for artworks physics. Riv. Nuovo Cim. 44, 453–498 (2021). https://doi.org/10.1007/s40766-021-00023-w
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DOI: https://doi.org/10.1007/s40766-021-00023-w