Daner Abdula

TL;DR: The more negative χ(G) value than theoretical expectations may be explained by interactions with the substrate reducing the lattice thermal expansion contribution to the temperature dependence of G-band frequency, which may also be responsible for zero-charge, room-temperature G- band line width increase and 2D- band frequency downshift.

TL;DR: In this paper, changes in the Raman spectra of individual metallic single-walled carbon nantoubes (SWNTs) upon sidewall covalent bond formation have been studied.

TL;DR: In this paper, the authors examined the diversity in the Raman G-band phonon modes within individual metallic carbon nanotubes of the same chirality, and showed that most of the distribution in line width and peak position of the Gband modes within a single chiral type can be explained by variations in where the Fermi level lies with respect to the band crossing point (i.e., where the nanotube is at zero charge).

TL;DR: In this article, the authors examined how doping and defects alter linewidths and lifetimes of optical phonons in carbon nanotubes and found that a varying degree of doping by means of electrostatic gating reveals decreasing full-width at half-maximum \ensuremath{\Gamma} down to \ENSuremath{1}4 ${\mathit{cm}}^{\ensureMath{-}1}$ at the charge neutrality point.