1. Universidad Veracruzana,Micro and Nanotechnology Research Center,Boca del Río,Veracruz,Mexico
2. National University of Colombia,School of Physics-Faculty of Sciences,Medellin,Colombia
3. Universidad Veracruzana,Faculty of Construction and Habitat Engineering,Master in Applied Engineering,Boca del Río,Veracruz,Mexico
4. Universidad Veracruzana,Faculty of Electrical and Electronic Engineering,Boca del Río,Veracruz,Mexico