[1] CEFET MG, Ctr Fed Educ Tecnol Minas Gerais, Dept Fis & Matemat, BR-30510000 Belo Horizonte, MG, Brazil
[2] CEFET MG, Ctr Fed Educ Tecnol Minas Gerais, Natl Inst Sci & Technol Complex Syst, BR-30510000 Belo Horizonte, MG, Brazil
[3] Univ Paris 06, Lab Phys & Mecan Milieux Heterogenes, PMMH UMR CNRS ESPCI 7636, F-75231 Paris 05, France
[4] UJF Grenoble 1, Grenoble INP, CNRS, UMR 5521,3SR Lab, F-38041 Grenoble 09, France