1. Laboratory
of Multifunctional Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland
2. Department
of Chemistry, Federal University of São Carlos, Rod. Washington
Luís, km 235, São Carlos, Sao Paulo CEP 13560-970, Brazil
3. Scientific Center
for Optical and Electron Microscopy (SCOPEM), Auguste-Piccard-Hof 1, CH-8093 Zurich, Switzerland
4. Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, CH-8093 Zurich, Switzerland
5. Embrapa Instrumentation, Rua XV de Novembro, 1452, Caixa Postal 741, São Carlos, Sao Paulo CEP 13560-970, Brazil