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Dirt Feels Magnetic Pull

New iron-flecked gel is used to remove centuries of grime from paintings

By Jason Farago,  Newser Staff

Posted Sep 4, 2007 1:05 PM CDT

(Newser) – Italian researchers have solved an age-old problem of painting conservation with new technology: magnets. Restorers use special gels to work on small areas of a canvas, but removing them has remained a delicate operation that can damage the artwork. Now, Nature reports, chemists at the University of Florence have developed a magnetic gel that can be removed harmlessly.

The gel is a polymer, firm enough to be cut with scissors, that has nanoparticles of iron mixed into it. When applied to a canvas, it sucks up dirt with a cleaning agent that is then reabsorbed into the gel. The magnet then removes the gel. A conservator at London's Courtauld Institute calls the innovation "useful for very delicate surfaces."

Conservation students at the Courtauld Institute, London
Conservation students at the Courtauld Institute, London   (Courtauld Institute of Art)
A conservator at the Delaware Art Museum.
A conservator at the Delaware Art Museum.   (Univ. of Delaware)
Conservators at work.
Conservators at work.   (Audobon Art)
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