1. Materials Science and Nanoengineering; Rice University; Houston TX 77005 USA
2. Bruker Nano Surfaces; Minneapolis MN 55344 USA
3. Applied Physics Department; State University of Campinas - UNICAMP; 13083-859-Campinas Sao Paulo Brazil
4. Center for Computational Engineering and Sciences; University of Campinas; 13.083-861 Campinas Sao Paulo Brazil
5. Center for Nanophase Materials Sciences; Oak Ridge National Laboratory; Oak Ridge TN 37831 USA
6. Metallurgical and Materials Engineering; Indian Institute of Technology; Kharagpur 721302 India