1. National Institute for R&D in Microtechnologies,Molecular Nanotechnology Laboratory,Bucharest,Romania
2. National Institute for R&D in Microtechnologies),Laboratory for Carbon Based Nanotechnologies and Nanostructures,Bucharest,Romania
3. National Institute for R&D in Microtechnologies,Reliability Laboratory,Bucharest,Romania
4. Telecommunications and Information Technology, University Politehnica of Bucharest,Faculty of Electronics,Bucharest,Romania