Abstract

We experimentally and theoretically study the density-dependent optical properties of 20nm gold nanoparticle monolayers on silicon at 530nm. Both results indicate a density-dependent resonance behavior. The density-dependent resonance suggests that the optical properties of the gold nanoparticle monolayers can be drastically modulated by changing the volume ratio Vr. It also implies, in this composite system, that the total surface plasmon resonance is maximized at a certain Vr.

© 2007 Optical Society of America

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