[PDF] Top 20 Raman spectroscopy of iodine-doped double-walled carbon nanotubes

... values of the Lennard-Jones parameters are kept fixed at ǫ= ...conclusions of these calculations are summerized below. For DWCNT of relative small diameters and then featured by a large gap between ... Voir le document complet

... investigation of highly anisotropic one dimensional 共1D兲 structures are some of the key objec- tives in ...properties of high aspect ratio nanocrys- tals are extensively ...in carbon nanotube ... Voir le document complet

... decomposition of methane over a CoMo-MgO catalyst. 14 They are free of amorphous carbon contamination, and the use of a MgO support allows its easy removal 15 without damaging the ...purity ... Voir le document complet

... Fluorinated carbon nanotubes can be freed of fluorine atoms with hydrazine treatment and annealing in an inert ...removal of fluorine with variation of ...process of thermal ... Voir le document complet

... variety of temperatures, with Figure 7(a) displaying the 350 °C etching ...intensities of peaks e and f were ...window of the G band is larger than that of the RBMs, slow G band decay ... Voir le document complet

... [2]. Iodine intercalation of multi-walled carbon nanotubes (MWNTs) is not clearly ...range of the Raman spectra displays two new peaks around 110 and 170 cm −1 , assigned ... Voir le document complet

... lack of data. Appearance of the resolved features in the optical absorption spectra of the fluorinated DWNTs indicates that certain tubes remain ...shells of DWNTs. It is surprise that most ... Voir le document complet

... delivery of therapeutic moieties and do not exhibit the toxic effects that have been attributed to longer CNTs [ 5 ...unique Raman spectral features, such as the RBM, allow for their detection inside cells ... Voir le document complet

... photoelectron spectroscopy Denslty functional theory calculatlons Bromination of double-walled carbon nanotubes (DWCNTs) was carried out using a saturated vapor of Br2 at ... Voir le document complet

... given carbon content, it is difficult to discriminate be- tween the many parameters, such as the quality and nature of the CNTs, preparation route of the powder, densification method and associated ... Voir le document complet

... root of these structural modi ...changes of a DWNT during the electron ...irradiation of the microscope. As a result, the presence of defected inner tubes suggests that a mechanical coupling ... Voir le document complet

... University of Johannesburg (UJ), ...URC of UJ, RSA. The use of the NEP Physical Properties Measurements on Cryogenic Cryogen Free Mea- surement System at UJ, obtained with the financial support from ... Voir le document complet

... given carbon content, it is difficult to discriminate be- tween the many parameters, such as the quality and nature of the CNTs, preparation route of the powder, densification method and associated ... Voir le document complet

... Bromination of double-walled carbon nanotubes (DWCNTs) was carried out using a saturated vapor of Br2 at room temperature with or without a pretreatment in bromine ... Voir le document complet

... delivery of therapeutic moieties and do not exhibit the toxic effects that have been attributed to longer CNTs [ 5 ...unique Raman spectral features, such as the RBM, allow for their detection inside cells ... Voir le document complet

... synthesis of monodimensional nanocrystals is com- plex due to the lack of stability of such ...a carbon nanotubes 共CNTs兲 due to their inner diameter in the nanometer range, as well as ... Voir le document complet

... synthesis of monodimensional nanocrystals is com- plex due to the lack of stability of such ...a carbon nanotubes 共CNTs兲 due to their inner diameter in the nanometer range, as well as ... Voir le document complet

... function of temperature, χ(T) was also measured using the VSM in the field cooled (FC) and zero field cooled (ZFC) modes from 300-2 K in an applied magnetic field of ...T. Raman spectroscopy ... Voir le document complet

... part of this thesis is devoted to nitrogen and sulphuric acid dop- ing of carbon ...properties of the carbon ...modification of the electronic band structure and a variation ... Voir le document complet

... most of the peaks increase in the higher frequency region, they are assigned to be the inner tubes in the DWNTs, because their diameters are smaller than ...Frequency of SWNTs, DWNTs and TWNTs (a), diameter ... Voir le document complet