**Author details**

Cristian Ravariu1 \* and Dan Eduard Mihaiescu2

\*Address all correspondence to: cristian.ravariu@upb.ro

1 Faculty of Electronics Telecommunications and Information Technology, Department of Electronic Device, Circuits and Architectures, Group of Biodevices and Nanoelectronics of Cells, "Politehnica" University of Bucharest, Bucharest, Romania

2 Faculty of Applied Chemistry and Material Science, Department of Organic Chemistry, "Costin Neniţescu", Politehnica University of Bucharest, Bucharest, Romania
