Optical antennas for nanoplasmonics

When light interacts with metallic films or nanoparticles, coherent 
oscillations of the free electron density can be excited. These 
quasi-particles form the basis of plasmonics. Metallic nanostructures 
can be designed such that particular polarization-dependent plasmonic 
modes are induced. They are thus acting as antennas for visible light, 
concentrating the energy of the incoming electromagnetic field in a 
nanoscale volume and mediating between optical and electrical signals. 
In this presentation we will cover basic principles of plasmonics, 
different techniques for the nanofabrication of optical antennas, 
their spectral properties, and examples for applications of 
nanoplasmonics in hybrid configurations.

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