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(92) Production(s) de GOZE C.
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Magnetic interactions in carbon nanotubes.
Auteur(s): Goze-Bac C., Latil S., Lauginie P., Jourdain V., Conard L., Duclaux L., Rubio A., Bernier Patrick
(Article) Publié:
Carbon Balance And Management, vol. 40 p.1825-1852 (2002)
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Synthèses et propriétés des nanotubes de carbone.
Auteur(s): Goze-Bac C.
Conference: Rapport Réseau Européen CARDECOM. CRIF (Belgium, FR, 2002-09-30)
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Nanotubes de carbone et dérivés : étude RMN
Auteur(s): Goze-Bac C.
Conference: GDR Nanotube (La Grande-Motte, France, FR, 2002-10-15)
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NMR and Raman investigations of carbon nanotubes.
Auteur(s): Goze-Bac C.
Conference: Rapport Réseau Européen CARDECOM. (Fribourg, Switzerland, FR, 2002-06-29)
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Magnetic interactions in carbon nanostructures
Auteur(s): Goze-Bac C., Latil S, Lauginie P, Jourdain V., Conard J, Duclaux L, Rubio A, Bernier P
(Article) Publié:
Carbon, vol. 40 p.1825-1842 (2002)
Résumé: A review is given of local and non-local magnetic interactions in carbon nanotubes as observed by NMR and EPR. Since reference to graphite and graphene is compulsory, an extended review of the NMR and EPR of graphite and related materials, including GIC, is given. Then EPR, and either static or high-resolution NMR experimental results, both in pure and intercalated MWNT or SWNT, are then reviewed. From high-resolution C-13-NMR in association with a theoretical modelization, it is shown how conducting and semiconducting carbon nanotubes might be discriminated. The benefits of high-resolution NMR for the characterization of carbon nanotube functionalization are described. The strong interdependence of all carbon material studies is clearly highlighted throughout the paper. (C) 2002 Published by Elsevier Science Ltd.
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C-13 NMR evidence for dynamics of nanotubes in ropes 
Auteur(s): Goze-Bac C., Latil S, Vaccarini L, Bernier P, Gaveau P, Tahir S., Micholet V, Aznar R., Rubio A, Metenier K, Beguin F
(Article) Publié:
Physical Review B, vol. 63 p.100302 (2001)
Ref HAL: hal-00658005_v1
DOI: 10.1103/PhysRevB.63.100302
WoS: 000167402100004
Exporter : BibTex | endNote
21 Citations
Résumé: We report on C-13 nuclear magnetic resonance from 10 up to 350 K on single wall carbon nanotubes. The magic angle spinning NMR spectrum shows one isotropic line at 126 ppm and the static spectrum a powder pattern typical for a curved graphene sheet. The T dependence of the spin-lattice relaxation rate T-1(-1) reveals an unusual phenomenon which could be explained by thermally activated small amplitude motion (SAM) of the nanotubes. If above 170 K, diffusion of twistons might be responsible for the local SAM of the C-13 sites, below this transition temperature frozen in twistons could appear with an orientational order of the nanotubes in the ropes.
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Three-dimensional rotational Langevin dynamics and the Lebwohl-Lasher model
Auteur(s): Goze-Bac C. , Paredes R, Vasquez C, Medina E, Hasmy A
(Article) Publié:
Physical Review E: Statistical, Nonlinear, And Soft Matter Physics, vol. 63 p.042701 (2001)
Résumé: We introduce a new scheme for molecular-dynamics simulation of three-dimensional systems exhibiting rotational motions. The procedure is based on the Langevin dynamics method. Our paper is focused on the Lebwohl-Lasher model in order to simulate the isotropic-nematic transition of liquid crystals. In contrast to previous dynamic approximations, our approach allows one to reproduce well the isotropic phase of these systems.
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