Work

Light scattering from colloidal aggregates on a hierarchy of length scales

Year: 2021

Type: article

Abstract: Disordered dielectrics with structural correlations on length scales comparable to visible light wavelengths exhibit interesting optical properties. Such materials exist in nature, leading to beautiful structural non-iridescent color, and they are also increasingly used as building blocks for optical materials and coatings. In this article, we explore the angular resolved single-scattering properties of micron-sized, disordered colloidal assemblies. The aggregates act as structurally colored supraparticles or as building blocks for macroscopic photonic glasses. We obtain first experimental data for the differential scattering and transport cross-section. Based on existing macroscopic models, we develop a theoretical framework to describe the scattering from densely packed colloidal assemblies on a hierarchy of length scales.

Source: Optics Express

DOI: 10.1364/oe.418735

Authors: Pavel Yazhgur, Geoffroy J. Aubry, Luis S. Froufe-Pérez, Frank Scheffold

Institution: University of Fribourg

Language: English

Topic: Photonic Crystals and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,987

Funder: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung