Structure and morphology of SBA-15 thin films on different substrates - Maranhão, Silvanna Leite de Albuquerque; Michels, Alexandre F.; Horowitz, Flavio; Silva, Luis C. Cides da; Matos, Jivaldo do Rosário; Fantini, Márcia Carvalho de Abreu (BRAZILIAN JOURNAL OF PHYSICS, 2014)