1. Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentation, Rua XV de Novembro, 1452, São Carlos, São Paulo 13561-206, Brazil
2. Graduate Program of Materials Sciences and Engineering, Federal University of São Carlos, Rodovia Washington Luis, km 235, São Carlos, São Paulo 13565-905, Brazil
3. Graduate Program of Chemical Engineering, Federal University of São Carlos, Rodovia Washington Luis, km 235, São Carlos, São Paulo 13565-905, Brazil