559 citations · 3.1k across the 39 of their papers we have counts for
7 papers · 1 filter
Inverse Design of Nanoparticles for Enhanced Raman Scattering
Rasmus E. Christiansen, Jérôme Michon, Mohammed Benzaouia +2
We show that topology optimization (TO) of metallic resonators can lead to improvement in surface-enhanced Raman scattering (SERS) efficiency compared to traditio…
Strongly enhanced upconversion in trivalent erbium ions by tailored gold nanostructures: toward high-efficient silicon-based photovoltaics
Jeppe Christiansen, Joakim Vester-Petersen, Søren Roesgaard +6
Upconversion of sub-band-gap photons constitutes a promising way for improving the efficiency of silicon-based solar cells beyond the Shockley-Queisser limit. 1500 to 980 nm upconv…
De-homogenization of optimal multi-scale 3D topologies
Jeroen Groen, Florian Stutz, Niels Aage +2
This paper presents a highly efficient method to obtain high-resolution, near-optimal 3D topologies optimized for minimum compliance on a standard PC. Using an implicit geometry de…
Towards solving large scale topology optimization problems with buckling constraints at the cost of linear analyses
Federico Ferrari, Ole Sigmund
This work presents a multilevel approach to large--scale topology optimization accounting for linearized buckling criteria. The method relies on the use of preconditioned iterative…
Designing Photonic Topological Insulators with Quantum-Spin-Hall Edge States using Topology Optimization
Rasmus E. Christiansen, Fengwen Wang, Ole Sigmund +1
Designing photonic topological insulators is highly non-trivial because it requires inversion of band symmetries around the band gap, which was so far done using intuition combined…
Topological Insulators by Topology Optimization
Rasmus E. Christiansen, Fengwen Wang, Ole Sigmund
An acoustic topological insulator (TI) is synthesized using topology optimization, a free material inverse design method. The TI appears spontaneously from the optimization process…
A "poor man's" approach for high-resolution three-dimensional topology optimization of natural convection problems
Nicolo Pollini, Ole Sigmund, Casper Schousboe Andreasen +1
This paper treats topology optimization of natural convection problems. A simplified model is suggested to describe the flow of an incompressible fluid in steady state conditions,…