6 papers
Gradient-based optimization of scatterer arrangements based on the T-matrix method
Nigar Asadova, Jan David Fischbach, Renaud Vallée +6
The demand for inverse design is increasing as the ability to fabricate sub-10 nm features expands the design space by orders of magnitude. Efficient inverse design benefits from d…
Characterization of Photopolymerized Microscopic Chiral Structures Using Photonic Orbital Angular Momentum
Jing Xu, Rik Strobbe, Yovan de Coene +2
The controlled fabrication and chiroptical characterization of microscale chiral structures remain central challenges in photonics, sensing, and metamaterial engineering. Here we d…
Band-Selective LDOS Engineering of Yb/Er Upconversion: an Electromagnetic-Kinetic Diagnostic Framework
Yuxiang Zhang, Mayte Gómez-Castaño, Mayte Gómez-Castaño +6
A persistent challenge in plasmonic upconversion is decoupling pump-field enhancement from emission-side local-density-of-optical-states (LDOS) engineering to achieve selective ban…
Three-dimensional photon transport in spinodal photocatalytic aerogels: how bicontinuous morphology controls kinetic rate constants
Renaud A. L. Vallée, Renaud A. L. Vallée
Anatase TiO2 dispersed in a silica aerogel matrix forms porous monolithic photocatalysts promising for indoor air purification and VOC photo-degradation. Their bicontinuous spinoda…
Metasurface Engineering with Tantalum Pentoxide-Coated Microspheres: Tailoring Optical Resonances and Enhancing Local Density of States
Alexandra FÄlamaÅ, Ana Maria M. Gherman, Renaud Vallée +1
Hexagonally-packed polystyrene microsphere monolayers coated with tantalum pentoxide (TaO) form scalable dielectric metasurfaces that support tunable photonic resonances an…
From Light Diffusion to Photocatalytic Rates: Compact Scaling Laws for Strongly Scattering Porous Slabs
Renaud A. L. Vallée, Rénal Backov
Light transport in strongly scattering porous photocatalytic materials governs the spatial distribution of absorbed photons and therefore the generation of charge carriers driving…