Scientific Projects
GCI scientists study the deterioration of objects and buildings, and how to prevent or stop such deterioration. One of many projects in this area involved the effect of outdoor and indoor air pollutants on museum collections. Another project analyzed the cause of deterioration of the sandstone in the original National Capitol Columns now at the United States National Arboretum.
In addition, GCI "conducts scientific research on materials' composition." For example, a project on the conservation of photographs has as one of its objectives the creation of an "Atlas of Analytical Signatures of Photographic Processes" which will provide "a precise chemical fingerprint of all the 150 or so ways pictures have been developed." As a part of that project, Getty scientists once examined the world's first photograph from nature by Nicéphore Niépce. Using X-ray fluorescence spectroscopy, reflectance Fourier transform infrared spectroscopy, and other techniques during the 2002-2003 project, they found (for example) that bitumen of Judea was present in the image.
Scientists at GCI viewed the CheMin instrument aboard the Curiosity rover, currently exploring the Gale crater on Mars, as a potentially valuable means to examine ancient works of art without damaging them. Until recently, only a few instruments were available to determine the composition without cutting out physical samples large enough to potentially damage the artifacts. The CheMin on Curiosity directs a beam of X-rays at particles as small as 400 µm and reads the radiation scattered back to determine the composition of an object in minutes. Engineers created a smaller, portable version, named the X-Duetto. Fitting into a few briefcase-sized boxes, it can examine objects on site, while preserving their physical integrity. It is now being used by Getty scientists to analyze a large collection of museum antiques and the Roman ruins of Herculaneum, Italy.
Read more about this topic: Getty Conservation Institute
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