157 citations · 1k across the 26 of their papers we have counts for
4 papers · 2 filters
Importance of carbon solubility and wetting properties of nickel nanoparticles for single wall nanotube growth
Mamadou Diarra, Alexandre Zappelli, Hakim Amara +2
Optimized growth of Single Wall Carbon Nanotubes requires a full knowledge of the actual state of the catalyst nanoparticle and its interface with the tube. Using Tight Binding bas…
Long-range interactions between substitutional nitrogen dopants in graphene: electronic properties calculations
Philippe Lambin, Hakim Amara, François Ducastelle +1
Being a true two-dimensional crystal, graphene has special properties. In particular, a point-like defect in graphene may have effects in the long range. This peculiarity questions…
Magnetism: the Driving Force of Order in CoPt. A First-Principles Study
Sondes Karoui, Hakim Amara, Bernard Legrand +1
CoPt or FePt equiatomic alloys order according to the tetragonal L10 structure which favors their strong magnetic anisotropy. Conversely magnetism can influence chemical ordering.…
Role of defect healing on the chirality of single-wall carbon nanotubes
Mamadou Diarra, Hakim Amara, Christophe Bichara +1
Although significant efforts have been directed towards a selective single wall carbon nanotube synthesis, the resulting diameter and chirality distributions are still too broad an…