1. Faculty of Engineering, Universidad de San Buenaventura, Bogotá 110141, Colombia
2. Department of Physics, Universidad Nacional de Colombia, Bogotá 111321, Colombia
3. Department of Electronics and Electromagnetism, Universidad de Sevilla, Sevilla 41012, Spain
4. Department of Electrical Engineering, The City College of New York, New York, New York 10031, USA
5. Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, USA
6. Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544, USA
7. Department of Electrical Engineering, Columbia University, New York, New York 10027, USA
8. Ceres Imaging, Oakland, California 94612, USA
9. Department of Electrical and Computer Engineering, Clarkson University, Potsdam, New York 13699, USA