Self-organized growth and optical properties of silver nanoparticle chains and stripesS. Camelio, D. Babonneau, D. Lantiat and L. Simonot
Laboratoire de Métallurgie Physique, UMR 6630 CNRS, Université de Poitiers, SP2MI, Téléport 2 Bvd M. et P. Curie, BP 30179, 86962 Futuroscope Cedex, France
received 13 December 2006; accepted in final form 27 June 2007; published August 2007
published online 19 July 2007
Self-organized chains and stripes of silver nanoparticles have been elaborated by ion-beam sputtering shadow deposition onto faceted alumina substrates. We show that the in-plane organization of the silver nanostructures can be controlled through the grazing-incidence conditions (angle and orientation of the atomic beam with respect to the nanostructured surface). Their optical properties are dominated by a surface-plasmon resonance whose spectral position depends on the polarization of the incident light (parallel or perpendicular to the facets of the alumina template) and that can be attributed to a strong electromagnetic coupling between individual nanoparticles.
78.67.-n - Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures.
81.07.-b - Nanoscale materials and structures: fabrication and characterization.
81.15.Cd - Deposition by sputtering.
© Europhysics Letters Association 2007