110 citations · 216 across the 9 of their papers we have counts for
9 papers
Line Edge Roughness Effects on the Thermoelectric Properties of Armchair Black Phosphorene Nanoribbons
Ebrahim Pishevar, Hossein Karamitaheri
This study delves into the thermoelectric properties of armchair black phosphorene nanoribbons while considering the presence of line edge roughness. Employing the tight-binding me…
Effect of wave versus particle phonon nature in thermal transport through nanostructures
Dhritiman Chakraborty, Hossein Karamitaheri, Laura de Sousa Oliveira +1
Comprehensive understanding of thermal transport in nanostructured materials needs large scale simulations bridging length scales dictated by different physics related to the wave…
On the channel width-dependence of the thermal conductivity in ultra-narrow graphene nanoribbons
Hossein Karamitaheri, Neophytos Neophytou
The thermal conductivity of low-dimensional materials and graphene nanoribbons in particular, is limited by the strength of line-edge-roughness scattering. One way to characterize…
Low-dimensional phonon transport effects in ultra-narrow, disordered graphene nanoribbons
Hossein Karamitaheri, Mahdi Pourfath, Hans Kosina +1
We investigate the influence of low-dimensionality and disorder in phonon transport in ultra-narrow armchair graphene nanoribbons (GNRs) using non-equilibrium Greens function (NEGF…
Anomalous diameter dependence of thermal transport in ultra-narrow Si nanowires
Hossein Karamitaheri, Neophytos Neophytou, Hans Kosina
We present atomistic valence force field calculations of thermal transport in Si nanowires of diameters from 12nm down to 1nm. We show that as the diameter is reduced, the phonon d…
Ballistic Phonon Transport in Ultra-Thin Silicon Layers: Effects of Confinement and Orientation
Hossein Karamitaheri, Neophytos Neophytou, Hans Kosina
We investigate the effect of confinement and orientation on the phonon transport properties of ultra-thin silicon layers of thicknesses between 1 nm-16 nm. We employ the modified v…
Calculation of Confined Phonon Spectrum in Narrow Silicon Nanowires using the Valence Force Field Method
Hossein Karamitaheri, Neophytos Neophytou, Mohsen Karami Taheri +2
We study the effect of confinement on the phonon properties of ultra-narrow silicon nanowires of side sizes of 1-10nm . We use the modified valence force field method to compute th…
Engineering Enhanced Thermoelectric Properties in Zigzag Graphene Nanoribbons
Hossein Karamitaheri, Neophytos Neophytou, Mahdi Pourfath +2
We theoretically investigate the thermoelectric properties of zigzag graphene nanoribbons in the presence of extended line defects, substrate impurities and edge roughness along th…
Study of Thermal Properties of Graphene-Based Structures Using the Force Constant Method
Hossein Karamitaheri, Neophytos Neophytou, Mahdi Pourfath +1
The thermal properties of graphene-based materials are theoretically investigated. The fourth-nearest neighbor force constant method for phonon properties is used in conjunction wi…