Plasmon / interband transitions coupling in the UV from large scale nanostructured Ni films

Silvere Schuermans (1) , Thomas Maurer (1) , Jérôme Martin (1) , Jean-Baptiste Moussy (2) , Jerome Plain (1)

1 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique
2 LNO - Laboratoire Nano-Magnétisme et Oxydes

We report on the synthesis of Ni nanoparticles via thin film thermal annealing. The as prepared particles exhibit a tunable average diameter ranging from 13 nm to 44 nm depending on the initial deposited film thickness and are covered with a stable NiO x shell. This technique is suitable for large scale fabrication of Ni nanoparticles onto substrates. The study of the magnetic and optical properties of these nanostructures revealed a ferromagnetic behaviour at room temperature and a localized surface plasmon resonance in the UV-range, promoting Ni nanoparticles as a suitable material for UV-plasmonic applications. The coupling between plasmon and interband transitions have also been studied.

Keywords: Electron beam lithography; Thin films; Localized surface plasmon resonance; Second harmonic generation; Surface plasmon resonance; Fundamental processes

Domains: Physics [physics]; Engineering Sciences [physics]; Optics / Photonic; Engineering Sciences [physics]; Micro and nanotechnologies/Microelectronics

Silvere Schuermans, Thomas Maurer, Jérôme Martin, Jean-Baptiste Moussy, Jerome Plain. Plasmon / interband transitions coupling in the UV from large scale nanostructured Ni films. Optical Materials Express, 2017, 7 (6), pp.1787. ⟨10.1364/OME.7.001787⟩. ⟨cea-01568000⟩