This chapter describes the theory of carrier transport in two dimensional graphene sheets. At high carrier density, the conductivity of graphene depends on carrier density, the dielectric constant of the substrate and the properties of the impurity potential, which can all can be treated using the Boltzmann transport formalism. At low carrier density, disorder causes the local random fluctuatio...

Bottinelli, A. 2016. Modelling collective movement and transport network formation in living systems. Uppsala Dissertations in Mathematics 96. 56 pp. Uppsala: Department of Mathematics. ISBN 978-91-506-2599-8. The emergence of collective patterns from repeated local interactions between individuals is a common feature to most living systems, spanning a variety of scales from cells to animals an...

It is known that the electro-transport and magnetism of perovskite alkaline-earth ruthenate oxides are sensitive to the lattice distortion associated with the A-site cation size. Orthorhombic CaRuO3 and cubic BaRuO3 exhibit distinctly different electro-transport and magnetic properties from orthorhombic SrRuO3. It has been suggested that SrRuO3 can be robust against some intrinsic/external pert...

BACKGROUND Investigation of bioheat transfer problems requires the evaluation of temporal and spatial distributions of temperature. This class of problems has been traditionally addressed using the Pennes bioheat equation. Transport of heat by conduction, and by temperature-dependent, spatially heterogeneous blood perfusion is modeled here using a transport lattice approach. METHODS We repres...

We establish a fundamental relationship between the averaged local density of states and the extinction mean free path of waves propagating in random media. From the principle of causality and the Kramers-Kronig relations, we show that both quantities are connected by dispersion relations and are constrained by a frequency sum rule. The results should be helpful in the analysis of wave transpor...

Transport simulations including in-medium properties derived in a microscopic π+NN−1+ ∆N−1 model in infinite nuclear matter are presented. In-medium pion dispersion relations, partial ∆ decay widths, pion absorption cross sections and ∆ cross sections are incorporated into the transport description by means of a local-density approximation. Strong modifications of π and ∆ production and absorpt...

In this paper we seek to relate the influence of the geometry and distribution of fracture aperture to the fluid flow properties of the fracture. Coupling fluid flow and transport experiments to high-resolution laser scanning confocal microscopy (LSCM) enables tracking of local fluid velocity and particle trajectories, and allows direct quantification of variations caused by surface roughness. ...