Photonic Glasses in Ferrofluid Thin Films
Year: 2025
Type: article
Abstract: This study investigates the dynamic magneto-optical properties of ferrofluid thin films, focusing on how magnetic fields induce light-matter interactions using a device known as Ferrocell. Our findings reveal that incident light interacts with self-assembled, anisotropic nanoparticle structures, transforming the ferrofluid into a highly responsive optical medium. Monochromatic laser experiments confirmed the direct correlation between laser color and diffracted light color offering direct insights into particle orientation and aggregate morphology. We observed significant chromatic shifts, especially in regions under strong perpendicular magnetic fields, which provide compelling evidence of structural colors. This phenomenon stems from wavelength-selective interference and diffraction, reminiscent of photonic crystal behavior, yet characterized by short-range order, classifying the material as a photonic glass.
Source: Condensed Matter
Authors: Alberto Tufaile, Alberto Tufaile, Adriana P B Tufaile, Adriana P B Tufaile
Institution: Universidade de São Paulo
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,930
OpenAlex ID: W4415648090