Share Email Print

Proceedings Paper

Interplay between photonic and plasmonic modes in optical properties of silver-coated two dimensional colloidal crystals
Author(s): Cosmin Farcau; Adrian Kuttesch; Traian Petrisor; Lucian Barbu-Todoran; Constantin Craciun; Simion Astilean
Format Member Price Non-Member Price
PDF $17.00 $21.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We report on the unusually high optical transmitivity of silver coated two-dimensional colloidal crystals. Our sample consists of a 50 nm silver film deposited on top of a regular two-dimensional array of polystyrene spheres of 400 nm diameter. Two-dimensional colloidal crystals were prepared according to the drop-coating technique, and subsequently covered in a silver film by thermal evaporation. Morphology of the crystal was checked by means of scanning electron microscopy. We measured transmission through the composite metallo-dielectric films at normal and also oblique incidence. Additional reflectance spectra and surface enhanced Raman scattering are used to understand the optical/plasmonic properties of the prepared nanostructure. Dependence of the spectral features on incident angle suggests highly localized optical/plasmonic modes are involved in the mechanism of transmission.

Paper Details

Date Published: 1 August 2007
PDF: 8 pages
Proc. SPIE 6785, ROMOPTO 2006: Eighth Conference on Optics, 678518 (1 August 2007); doi: 10.1117/12.757915
Show Author Affiliations
Cosmin Farcau, Babes-Bolyai Univ. (Romania)
Adrian Kuttesch, Babes-Bolyai Univ. (Romania)
Traian Petrisor, Technical Univ. Cluj-Napoca (Romania)
Lucian Barbu-Todoran, Babes-Bolyai Univ. (Romania)
Constantin Craciun, Babes-Bolyai Univ. (Romania)
Simion Astilean, Babes-Bolyai Univ. (Romania)

Published in SPIE Proceedings Vol. 6785:
ROMOPTO 2006: Eighth Conference on Optics
Valentin I. Vlad, Editor(s)

© SPIE. Terms of Use
Back to Top