1. Molecular Electronics and Photonics Research Unit, Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, 45 Kitiou Kyprianou Str., Limassol 3041, Cyprus
2. Department of Physics, University of Patras, 26504 Patras, Greece
3. Department of Public and Community Health, School of Public Health, University of West Attica, 11521 Athens, Greece