R. H. Miwa, Faculdade de Fisica, Universidade Federal de Uberlandia, C.P. 593, 38400-902, Uberlandia, MG-Brazil.
Felipe Crasto de Lima, Brazilian Nanotechnology National Laboratory, Campinas, SP, Brazil.
Andrei Klishin and Greg van Anders, Queen's University.
Pavel Jelinek and Pingo Mutombo from the Nanosurf group at the Institute of Physics of Czech Academy of Science.
Cathleen Crudden, Department of Chemistry, Queen's University, Kingston, Ontario, Canada.
Chris Baddeley, Department of Chemistry, University of St Andrews, Scotland.
Hugh Horton, Department of Chemistry, Queen's University, Kingston, Ontario, Canada.