1. Department of General Dental Sciences, School of Dentistry, Marquette University, Milwaukee 53233, Wisconsin, United States
2. Department of Physics, School of Sciences, São Paulo State University (UNESP), Bauru 17033-360, Brazil
3. Department of Inorganic Chemistry, Institute of Chemistry, Sao Paulo State University (UNESP), Araraquara 14800-060, Brazil