The Magnetic Imaging of Oil Paintings
ResumoWe propose a new technique for authentication of oil paintings, using a scanning SQUID or fluxgate technique to measure its magnetic field. The paintings are pre-magnetized in an homogeneous field of 100 G. It was observed that the response depends on the ferromagnetic properties of each paint independent of its colour. This shows that a magnetic image could be used as a magnetic signature for authentication purposes.
PINTO, Paulo Leite. The Magnetic Imaging of Oil Paintings. Physicæ Proceedings, [S.l.], p. 1, mar. 2012. ISSN 2236-7535. Disponível em: <http://physicae.ifi.unicamp.br/index.php/phyproceedings/article/view/physicae.proceedings.XIYRM.21>. Acesso em: 21 aug. 2017. doi: https://doi.org/10.5196/physicae.proceedings.XIYRM.21.