Geometric theory of defects

MO Katanaev - Physics-Uspekhi, 2005 - iopscience.iop.org
A description of dislocation and disclination defects in terms of the Riemann–Cartan
geometry is given, with the curvature and torsion tensors interpreted as the surface densities …

Low-temperature carbonization of polyacrylonitrile/graphene carbon fibers: A combined ReaxFF molecular dynamics and experimental study

S Rajabpour, Q Mao, Z Gao, MK Talkhoncheh, J Zhu… - Carbon, 2021 - Elsevier
Graphene inclusion in a polymer matrix is a promising route to significantly enhance the
mechanical properties of low-grade carbon fibers (CFs). Using ReaxFF molecular dynamics …

Classifying nanostructured carbons using graphitic indices derived from Raman spectra

N Larouche, BL Stansfield - Carbon, 2010 - Elsevier
Raman scattering is known to be a unique characterization tool for carbon-based materials
such as graphite, diamond, graphene and nanostructured carbons. In this article, we …

Effects of topological defects and local curvature on the electronic properties of planar graphene

A Cortijo, MAH Vozmediano - Nuclear Physics B, 2007 - Elsevier
A formalism is proposed to study the electronic and transport properties of graphene sheets
with corrugations as the one recently synthesized. The formalism is based on coupling the …

Predicting cost-effective carbon fiber precursors: Unraveling the functionalities of oxygen and nitrogen-containing groups during carbonization from ReaxFF …

Q Mao, S Rajabpour, M Kowalik, ACT van Duin - Carbon, 2020 - Elsevier
Blends of polyacrylonitrile (PAN) and poly (p-phenylene-2, 6-benzobisoxazole)(PBO) as
precursors may offer an opportunity to reduce the cost of carbon fiber (CF) production. The …

Electronic properties of curved graphene sheets

A Cortijo, MAH Vozmediano - Europhysics Letters, 2007 - iopscience.iop.org
A model is proposed to study the electronic structure of slightly curved graphene sheets with
an arbitrary number of pentagon-heptagon pairs and Stone-Wales defects based on a …

Geometric phases in graphitic cones

C Furtado, F Moraes, AMM Carvalho - Physics Letters A, 2008 - Elsevier
In this Letter we use a geometric approach to study geometric phases in graphitic cones.
The spinor that describes the low energy states near the Fermi energy acquires a phase …

Landau levels in graphene layers with topological defects

MJ Bueno, C Furtado, AM de M. Carvalho - The European Physical …, 2012 - Springer
In this work, we study the low-energy electronic spectrum of a graphene layer structure with
a disclination in the presence of a magnetic field. We make this study using the continuum …

Condensed matter physics as a laboratory for gravitation and cosmology

F Moraes - Brazilian Journal of Physics, 2000 - SciELO Brasil
The geometric language of General Relativity is not normally related to Condensed Matter
(CM) Physics since it is the electromagnetic and not the gravitational interaction that …

On an electron in an elastic medium with a spiral dislocation

A Maia, K Bakke - International Journal of Modern Physics A, 2019 - World Scientific
Topological effects of a spiral dislocation on an electron are investigated when it is confined
to a hard-wall confining potential. Besides, the influence of the topology of the spiral …