Cultural Heritage

Two nuclear magnetic resonance (NMR) devices, a standard imaging apparatus and a portable single-sided relaxometer (with geometry that allows non-destructive in-situ relaxation measurements on samples of any dimensions), were used to assess the hydrophobic performance of an acrylic polymer (Paraloid B-72) applied as a trichloromethane (chloroform) solution on a biocalcarenite (Lecce stone). The NMR images …

The Use of Portable Single-Sided Relaxometry and Laboratory Imaging NMR Devices in Stone Conservation Read More »

Wall paintings in the XVI century Serra Chapel in the “Chiesa di Nostra Signora del Sacro Cuore” Rome, have been studied using unilateral NMR. In order to map the distribution of moisture content in the wall painted, a large number of Hahn echo measurements, covering large areas of the wall painting were performed. Because the intensity of the …

Unilateral NMR Study of a XVI Century Wall Painted Read More »

Unilateral NMR has been used to monitor the state of conservation of frescoes in the Vasari’s house in Florence. The causes of deterioration of ancient frescoes are varied, which result in the detachment and crumbling of the painted film from the supporting plaster and in the outcropping of salts. Unilateral measurements of Hahn echo performed on such frescoes have allowed a perfect identification …

Fresco Paintings Studied by Unilateral NMR Read More »