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23 papers · 1 filter
Reexamination of Hagen-Poiseuille flow: shape-dependence of the hydraulic resistance in microchannels
Niels Asger Mortensen, Fridolin Okkels, Henrik Bruus
We consider pressure-driven, steady state Poiseuille flow in straight channels with various cross-sectional shapes: elliptic, rectangular, triangular, and harmonic-perturbed circle…
A Coupled Cavity Micro Fluidic Dye Ring Laser
M. Gersborg-Hansen, S. Balslev, N. A. Mortensen +1
We present a laterally emitting, coupled cavity micro fluidic dye ring laser, suitable for integration into lab-on-a-chip micro systems. The micro-fluidic laser has been successful…
Modeling of inelastic transport in one-dimensional metallic atomic wires
Thomas Frederiksen, Mads Brandbyge, Nicolas Lorente +1
Inelastic effects in electron transport through nano-sized devices are addressed with a method based on nonequilibrium Green's functions (NEGF) and perturbation theory to infinite…
Intermittent transport in edge plasmas
Odd Erik Garcia, Volker Naulin, Anders Henry Nielsen +1
The properties of low-frequency convective fluctuations and transport are investigated for the boundary region of magnetized plasmas. We employ a two-dimensional fluid model for th…
A high-level programming-language implementation of topology optimization applied to steady-state Navier-Stokes flow
Laurits H. Olesen, Fridolin Okkels, Henrik Bruus
We present a versatile high-level programming-language implementation of nonlinear topology optimization. Our implementation is based on the commercial software package Femlab, and…
Inelastic scattering and local heating in atomic gold wires
Thomas Frederiksen, Mads Brandbyge, Nicolas Lorente +1
We present a method for including inelastic scattering in a first-principles density-functional computational scheme for molecular electronics. As an application, we study two geom…