1. Interdisciplinary Materials Science, Vanderbilt University, Nashville, Tennessee 37212, United States
2. J. Paul Getty Museum, Los Angeles, California 90049-1687, United States
3. Vanderbilt Institute of Nanoscale Science and Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States
4. National Museum of African Art, Smithsonian Institute, Washington, D.C. 20560, United States
5. Smithsonian Institution Museum Conservation Institute, Suitland, Maryland 20746, United States
6. Department of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States