1. Department of Exact Sciences and Education (CEE), Universidade Federal de Santa Catarina, Campus Blumenau, Rua João Pessoa, 2514, Velha, Blumenau, 89036-004 SC, Brazil
2. Institute of Physics, Universidade Federal da Bahia, Campus Universitário da Federação, Rua Barão de Jeremoabo s/n, Salvador, 40170-115 BA, Brazil
3. Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA
4. Department of Electrical Engineering and Computer Science, University of Cincinnati, Cincinnati, Ohio 45221, USA