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Optical confinement phenomena in plasmonic nanomaterials with predesigned electromagnetic properties.

The principal objective of this project is to investigate and control the optical confinement phenomena through mastering the plasmonic excitations in individual metallic nanoparticles and study negative refractive index materials composed of nano-engineered arrays of metallic and superconducting nanoresonators. This goal will be achieved by using the following nanoengineered systems, which also eventually will improve the limitations of existing NRI:(i) to broaden considerably the negative magnetic permeability (¿<0) interval, by using nanostructured multilayers and nanostructured hybrid structures [metal/dielectric/metal]n and single layers where several resonance frequencies will be superimposed. The resonant frequencies in a multilayer will be the same within the layer but different from layer to layer. In a single plane version a 2D superposition of the cells with different resonances will be used.(ii) to increase the frequency for which the negative index occurs up to a visible range. Different techniques can be implemented to achieve this goal as is highlighted in the section Design and Methodology.(iii) to reduce absorption at the frequencies below the superconducting gap, these systems will be made from both normal metallic and superconducting films.
Date:1 Jan 2008 →  31 Dec 2011
Disciplines:Condensed matter physics and nanophysics
Project type:Collaboration project