1. Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, Texas 78249, USA
2. División de Ciencias e Ingenierías, Universidad de Guanajuato, Loma del Bosque 103, Colonia Lomas del Campestre, CP 37150 León, Guanajuato, Mexico
3. Department of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, Texas 78249, USA