Laser printing of Au/Si core-shell nanoparticles

3rd International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures (Saint Petersburg OPEN 2016)

Zograf, G.P.^1 ; Zuev, D.A.^1 ; Milichko, V.A.^1 ; Mukhin, I.S.^1,2 ; Baranov, M.A.^1 ; Ubyivovk, E.V.^1,3 ; Makarov, S.V.^1 ; Belov, P.A.^1

ITMO University, St. Petersburg

197101, Russia^1

St. Petersburg Academic University, St. Petersburg

194021, Russia^2

St. Petersburg State University, St. Petersburg

199034, Russia^3

关键词: High refractive index;    Laser printing;    Multi-layer thin film;    Optical field enhancement;    Optical response;    Plasmon resonances;    Plasmonic nanoparticle;    Power pattern;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/741/1/012119/pdf
DOI  :  10.1088/1742-6596/741/1/012119

来源: IOP

【 摘 要 】

We develop a novel method of core-shell nanoparticles fabrication based on laser ablation of multilayer thin films using femtosecond laser pulses. Transmission electron microscopy proves that the obtained structures have Si and Au separated parts. We theoretically show that the combination of high refractive index dielectric and plasmonic nanoparticles shows possibility of interplay between magnetic optical responses and plasmon resonances. This opens a possibility to manipulate by both scattering power pattern and local optical field enhancement via precise engineering of the core/shell nanoparticles.