1. Université de Reims Champagne-Ardenne, INRA, FARE, UMR A 614, 51097 Reims, France
2. Université de Reims Champagne Ardenne, LRN EA 4682, 51097 Reims,France
3. NanoScience Technology Center, University of Central Florida, Orlando, Florida 32826, United States
4. Physics Department, University of Central Florida, Orlando, Florida 32816, United States
5. CBMN UMR CNRS 5248, IPB, Université de Bordeaux, 33600 Pessac, France