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UV Laser Safely Cleans Historical Glass

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Klaus Dickmann, Jens Hildenhagen and Peter Mottner

Historical glass can suffer a tremendous loss of transparency from atmospheric or biogenic corrosion resulting from long-term exposure to air pollutants and humidity (Figure 1). Surface layers and deposits can present serious obstacles to efforts to preserve stained glass. Although conventional cleaning methods can remove most surface layers, it is difficult to remove more complex layers such as dense, well-adhering encrustations of corrosion products or aged and insoluble organic polymers. Attacks on the glass surface produce ion exchanges that form a gel layer, which then acts as a...Read full article

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    Published: May 2001
    FeaturesKrF excimer laserLasers

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