1. Zernike Institute for Advanced Materials; University of Groningen; Nijenborgh 4 NL-9747AG Groningen The Netherlands
2. Department of Material Science and Engineering; University of Ioannina; GR-45110 Ioannina Greece
3. EMAT (Electron Microscopy for Materials Science); University of Antwerp; Groenenborgerlaan 171 B-2020 Antwerpen Belgium
4. Department of Environmental and Natural Resources Management; University of Western Greece; Seferi 2 GR-30100 Agrinio Greece
5. Laboratory of Physiology; Faculty of Medicine, University of Ioannina; GR-45110 Ioannina Greece