300 citations · 1.3k across the 19 of their papers we have counts for
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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…
Ultra-large bandwidth hollow-core guiding in all-silica Bragg fibers with nano-supports
G. Vienne, Y. Xu, C. Jakobsen +12
We demonstrate a new class of hollow-core Bragg fibers that are composed of concentric cylindrical silica rings separated by nanoscale support bridges. We theoretically predict and…
Electro-hydrodynamics of binary electrolytes driven by modulated surface potentials
N. A. Mortensen, L. H. Olesen, L. Belmon +1
We study the electro-hydrodynamics of the Debye screening layer that arises in an aqueous binary solution near a planar insulating wall when applying a spatially modulated AC-volta…
Predicting macrobending loss for large-mode area photonic crystal fibers
M. D. Nielsen, N. A. Mortensen, M. Albertsen +3
We report on an easy-to-evaluate expression for the prediction of the bend-loss for a large mode area photonic crystal fiber (PCF) with a triangular air-hole lattice. The expressio…
Low-loss photonic crystal fibers for transmission systems and their dispersion properties
M. D. Nielsen, C. Jacobsen, N. A. Mortensen +2
We report on a single-mode photonic crystal fiber with attenuation and effective area at 1550 nm of 0.48 dB/km and 130 square-micron, respectively. This is, to our knowledge, the l…