2007 NSTI Nanotechnology Conference and Trade Show - Nanotech 2007 - 10th Annual

Dispersion Relation of Surface Plasmon in Al/Si Structure Perforated with Randomly Distributed Holes

Y-T Chang, I-C Tung, C-Y Chen, M-W Tsai, C-H Chan, C-C Chen and S-C Lee
National Taiwan University, TW

Keywords:
surface plasmons, surface plasmon plartions, micro-spheres, random distributed

Abstract:
The zero-order transmission spectra and dispersion relations of an Al/Si structure perforated with randomly distributed holes were investigated. The structure was fabricated by depositing highly uniform polystyrene micro-spheres with size 2um in diameter on doubly-polished n-type silicon wafer, followed by the deposition of 200nm-thick Al films, and the polystyrene micro-spheres were lifted-off. Experimental results suggest that the primary transmission peak wavelength is dependent on the nearest neighbor distance in a cluster of random holes.

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