Secrets Of Nanomaterial From The Middle Ages Examined By Scientists
The altar examined is thought to have been made around 1420 in Southern Germany and for a long time stood in a mountain chapel on Alp Leiggern in the Swiss canton of Valais. Today it is on display at the Swiss National Museum (Landesmuseum Zürich). (Photo: Swiss National Museum, Landesmuseum Zürich)
To gild sculptures in the late Middle Ages, artists often applied ultra-thin gold foil supported by a silver base layer. For the first time, scientists at the Paul Scherrer Institute PSI have managed to produce nanoscale 3D images of this material, known as Zwischgold. The pictures show this was a highly sophisticated medieval production technique and demonstrate why restoring such precious gilded artifacts is so difficult.
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Source: https://www.ancientpages.com/2022/10/11/secrets-of-nanomaterial-from-the-middle-ages-examined-by-scientists/
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