Jonas, and many others, thank you for all the love, the laugh, the tears. Thank you for just being there for me.To my colleagues from Room 3, thank you for making my work days easier and funnier.To Prof. Andras Kis and Guilherme Marega, thank you for the collaboration in providing the samples.To Prof. Marcio Daldin, Gabriel, Alessandra, and Vinicius, thank you for the collaboration regarding the photoluminescence measurements.To Marcelo de Assumpção, thank you for the collaboration in the AFM measurements.To the Brazilian agencies Coordenação de Aperfeiçoamento de Pessoal de Nível Superior -Brazil (CAPES) (grant 88887.609043/2021-00) and Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) who financed this work, thank you for supporting science in Brazil.Again, many thanks to everybody.
"If the whole universe has no meaning, we should never have found outthat it has no meaning: just as if there were no light in the universe and therefore no creatures with eyes, we should never know it was dark. Dark would be without meaning." C. S. Lewis "The more I study nature, the more I stand amazed at the work of the Creator. Science brings men nearer to God."Louis Pasteur "For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life." John 3.