Photocrosslinking and photopatterning of magneto-optical nanocomposite sol–gel thin film under deep-UV irradiation

This paper is aimed at investigating the process of photocrosslinking under Deep-UV irradiation of nanocomposite thin films doped with cobalt ferrite magnetic nanoparticles (MNPs). This material is composed of a hybrid sol–gel matrix in which MNP can be introduced with high concentrations up to 20 v...

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Bibliographic Details
Published in:Scientific reports 2021-03, Vol.11 (1), p.5075-5075, Article 5075
Main Authors: Bidaud, C., Berling, D., Jamon, D., Gamet, E., Neveu, S., Royer, F., Soppera, O.
Format: Article
Language:English
Subjects:
639/301
639/301/1019
639/301/357/551
639/638/298/398
Chemical Sciences
Cobalt
Fabrication
Humanities and Social Sciences
Irradiation
multidisciplinary
Nanocomposites
Nanoparticles
Science
Science (multidisciplinary)
Thin films
Titanium
Ultraviolet radiation
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Summary:This paper is aimed at investigating the process of photocrosslinking under Deep-UV irradiation of nanocomposite thin films doped with cobalt ferrite magnetic nanoparticles (MNPs). This material is composed of a hybrid sol–gel matrix in which MNP can be introduced with high concentrations up to 20 vol%. Deep-UV (193 nm) is not only interesting for high-resolution patterning but we also show an efficient photopolymerization pathway even in the presence of high concentration of MNPs. In this study, we demonstrate that the photocrosslinking is based on the free radical polymerization of the methacrylate functions of the hybrid precursor. This process is initiated by Titanium-oxo clusters. The impact of the nanoparticles on the photopolymerization kinetic and photopatterning is investigated. We finally show that the photosensitive nanocomposite is suitable to obtain micropatterns with sub-micron resolution, with a simple and versatile process, which opens many opportunities for fabrication of miniaturized magneto-optical devices for photonic applications.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-84376-6