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Periodically nanostructured noble-metal thin films with enhanced optical properties

C. FARCAU1,* , V. CANPEAN1, M. GABOR1, T. PETRISOR jr.2, S. ASTILEAN1

Affiliation

  1. Nanobiophotonics Laboratory, Institute for Interdisciplinary Experimental Research and Faculty of Physics, Babes-Bolyai University,M Kogalniceanu 1, Cluj-Napoca, Romania
  2. Materials Science and Engineering Faculty, Technical University, C. Daicoviciu 15, Cluj-Napoca, Romania

Abstract

We present results on fabrication and characterization of a large variety of metallic and metalo-dielectric periodic nanostructures obtained by using a colloidal lithography technique. Their optical properties are dominated by surface plasmons excitation and can be tuned at the desired wavelength. Furthermore we show that the prepared nanostructures can be used to enhance the fluorescence signal of thionine dye molecules placed in their nanoscale vicinity..

Keywords

Nanolithography, Noble-metal nanostructures, Surface plasmons, Thin films, Optical properties.

Submitted at: Feb. 25, 2008
Accepted at: April 4, 2008

Citation

C. FARCAU, V. CANPEAN, M. GABOR, T. PETRISOR jr., S. ASTILEAN, Periodically nanostructured noble-metal thin films with enhanced optical properties, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 4, pp. 809-812 (2008)