6,395 research outputs found
Multi-spectroscopic investigation of the structure of single-wall carbon nanotubes
We present a multispectroscopic structural study of various nanotube samples
with different tube diameters. We determine for each sample the mean bundle and
tube diameter as well as the tube diameter distribution. The possibility to
work on SWNT of various structural characteristics opens new opportunities to
correlate the nanotube structure and their physical properties.Comment: Conf\'{e}rence : 8 au 15 mars 200
Nanotube-based systems for broadband optical limiting: towards an operational system
Nanotube-based systems are good candidates for optical limiting against
broadband laser pulses. We explore new routes to improve their limiting
performances. We show that the diameter of the nanotubes is a key factor to
control the performances. On the other hand, we demonstrate that chemically
modified nanotubes can be mixed with organic chromophores, leading to high
performance composite limiting systems which are particularly efficient in the
nanosecond regime due to the cumulative effects of nonlinear scattering and
multiphoton absorption
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