Yann Magnin

TL;DR: In this article, the authors investigated the relationship between the length and the chiral angle of single-walled carbon nanotubes (SWCNTs) and showed that SWCNT lengths depend more on their growth mode.

TL;DR: Cross-checking the results with the available reports from the literature of the last decade strongly suggests that these latter conditions should favor the near armchair chiral selectivity observed empirically.

TL;DR: The carbon rich phase diagrams of nickel-carbon nanoparticles, relevant to catalysis and catalytic chemical vapor deposition synthesis of carbon nanotubes, are calculated for system sizes up to about 3 nm, resulting in a strong relative lowering of the eutectic temperature and a phase diagram topology different from the bulk one.

TL;DR: In this article, dedicated Raman scattering experiments were conducted for graphene monolayers deposited on silicon nitride substrates and over a broad temperature range extending over 150--800 K. The relation between those measurements for the $G$ band and the graphene TEC, which involves correcting the measured signal from the mismatch contribution of the substrate, was analyzed based on different theoretical candidates for $\ensuremath{\alpha}(T)$.

TL;DR: Comparison with existing experimental and theoretical data obtained from complementary approaches indicates that empirical potentials limited to nearest-neighbour interactions give rather dispersed results, and that van der Waals corrections generally tend to flatten the variations of the in-plane lattice constant, in contradiction with experiment.