Ph. Lambin

TL;DR: In this article, straight and coiled carbon tubules were obtained with inner and outer diameter of 3-7 and 15-20 nm, respectively, and up to 300 μm in length.

TL;DR: It is observed that the transmittance spectra show very asymmetric peaks which are explained as a Fano-like interference phenomenon, and a finite difference time domain method is employed to perform a comprehensive study of the resonance line shape as a function of the mass density of the structural units.

TL;DR: In this article, the effect of atomic scale defects and disorder on the low-energy electronic structure of graphene was investigated by scanning tunneling microscopy and spectroscopy measurements, which reveal that defect sites, besides acting as scattering centers for electrons through local modification of the on-site potential, also induce disorder in the hopping amplitudes.

TL;DR: In this article, a molecular model consistent with theoretical predictions on how to connect cylindrical tubule segments is provided, which is probably caused by the occurrence along the helix of pairs of pentagon-heptagon carbon rings in the hexagonal network.

TL;DR: In this article, carbon nanotubules were produced in a large amount by catalytic decomposition of acetylene in the presence of various supported transition metal catalysts and the influence of different parameters such as the nature of the support, the size of active metal particles and the reaction conditions on the formation of nanotubes was studied.