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Berling, Dominique
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Topics
Publications (8/8 displayed)
- 2024Laser Direct Writing of Crystallized TiO2 by Photothermal Effect Induced by Gold Nanoparticlescitations
- 2023Laser direct writing photoluminescent patterns from ZnO nanocrystals
- 2022Deep-UV laser direct writing of photoluminescent ZnO submicron patterns: an example of nanoarchitectonics conceptcitations
- 2021Photocrosslinking and photopatterning of magneto-optical nanocomposite sol–gel thin film under deep-UV irradiationcitations
- 2020Deep‐UV lithography of nanocomposite thin films into magnetooptical gratings with submicron periodicitycitations
- 2018Novel hybrid nanocomposite photo-structured for the preparation of magneto-optical devices
- 2013Room-temperature ferromagnetism of all-epitaxial beta-Fe-Ge/diamond-Ge/beta-Fe-Ge trilayerscitations
- 2013Interfacial properties of all-epitaxial Fe-Ge/Ge heterostructures on Ge(111)citations
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article
Laser Direct Writing of Crystallized TiO2 by Photothermal Effect Induced by Gold Nanoparticles
Abstract
International audience ; AbstractNear‐infrared (NIR) laser annealing is successfully used to crystallize TiO2 thin films from a sol–gel solution deposited on gold nanoparticle arrays (AuNPs). The AuNPs are used as nano‐heaters allowing a local temperature increase up to 500 °C in the film. The temperature reached under the laser is deduced from the presence of the anatase phase in the samples obtained by laser exposure, showing that crystallized TiO2 can be obtained by the photothermal effect. Different analytical techniques supported this study, such as grazing X‐ray diffraction (GIXRD), UV–vis, and Raman spectroscopy. The temperature increase is confirmed by a numerical model that emphasizes the role of NPs coupling in the photothermal effect. Direct laser patterning by NIR laser and in combination with Deep‐UV photolithography (DUV) are demonstrated. This fabrication method opens new perspectives in applications such as photonics, photocatalysis, or biosensing.