1. Institute of Physics “Gleb Wataghin”, University of Campinas, Campinas, SP 13083-859, Brazil
2. Center for Semiconductor Components and Nanotechnologies, University of Campinas, Campinas, SP 13083-870, Brazil
3. Citrus Center APTA “Sylvio Moreira” Agronomic Institute of Campinas, Cordeirópolis, SP 13490-970, Brazil
4. Department of Structural and Functional Biology, Institute of Biology, University of Campinas, Campinas, SP 13083-862, Brazil