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The use of photonic crystals (PCs) is gaining interest regarding the interaction between light and organized structures. This study demonstrates an efficient and cost-effective fabrication of an opal structure based on the electrophoretic deposition (EPD) of self-made silica particles. The process allows one to reduce the fabrication time compared to classical methods, which can take days or weeks to months, while this method takes only 2 min. Silica particles with a diameter of less than 300 nm exhibit a markedly low sedimentation rate. Nevertheless, when they form a close-packed structure, they display a partial band gap in the visible region. The resulting opals are iridescent, from blue to red, and display additional angle-dependent colors. Furthermore, the synthesis of silica particles was completed within a 2 h time frame. Their washing, including a centrifugation step, did not result in the formation of aggregates. Such particles tend to break the long-range order in the PCs.

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  This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Optical Materials, copyright © 2025 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsaom.4c00446.

Keyword: Electrophoretic deposition, thin films, chalcogenides, coating materials

Date published: 2025-01-24

Publisher: American Chemical Society (ACS)

Journal:

• ACS Applied Optical Materials (ISSN: 27719855) vol. 3 issue. 1 p. 153-160

Funding:

• Agence Nationale de la Recherche ANR-22-CE09-0015
• Centre National de la Recherche Scientifique
• National Institute for Materials Science
• Saint Gobain

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6014

First published URL: https://doi.org/10.1021/acsaom.4c00446

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Updated at: 2026-01-03 11:35:03 +0900

Published on MDR: 2026-01-03 11:34:39 +0900