[1] Univ Montpellier 2, Lab Charles Coulomb, UMR 5521, F-34095 Montpellier, France
[2] CNRS, Lab Charles Coulomb, UMR 5521, F-34095 Montpellier, France
[3] Off Natl Etud & Rech Aerosp, CNRS, Lab Etud Microstruct, F-92322 Chatillon, France
[4] CEA Saclay, IRAMIS, LICSEN, NIMBE, F-91191 Gif Sur Yvette, France
[5] Univ Montpellier 2, UMR 5253, Inst Charles Gerhardt Montpellier, CNRS,ENSCM,UM1, F-34095 Montpellier, France
[6] Univ Moulay Ismail, Unite Associee, Lab Phys Mat & Modelisat Syst, Fac Sci,CNRS,URAC08, Zitoune 50000, Meknes, Morocco
[7] Natl Inst Adv Ind Sci & Technol, Nanotube Res Ctr, Tsukuba, Ibaraki 3058565, Japan