1. Solid state Electronics Section
2. Department of Electrical Engineering
3. Center for Research and Advanced Studies of National Polytechnic Institute
4. CINVESTAV-IPN
5. 07360 Mexico City
6. CONACYT - Center for Engineering and Industrial Development (CIDESI)
7. Microtechnology Division (DMT)
8. 76125 Santiago de Querétaro
9. Mexico
10. Institute of Chemical Research of Catalonia
11. The Barcelona Institute of Science and Technology (ICIQ-BIST)
12. E-43007 Tarragona
13. Spain
14. Departament d’Enginyeria Electronica Electrica I Automatica
15. Rovira i Virgili University
16. 43007 Tarragona