December 2, 2004 FRONTIERS IN MATERIALS SCIENCE
VINSE COLLOQUIUM SERIES
Dr. David Citrin
School of Electrical and Computer Engineering
Georgia Institute of Technology
"Nanoplasmonics"
Abstract. Plasmon-polariton propagation in arrays of noncontacting, noble-metal nanoparticles has attracted attention for sub-wavelength waveguide structures and for near-field optical probes. The propagation occurs due to the retarded electromagnetic coupling between nanoparticles; the coupling possesses both long- and short-range terms leading to a rich variety of effects underlying the propagation and radiative decay of plasmon polaritons in these structures. In this talk I will discuss these central, but hitherto ignored, effects in nanoparticles chains, outlining the theoretical approach and illustrating it with examples of how to manage radiative losses in nanoparticle chains and related structures. I will conclude with a discussion of the localization properties of plasmon polaritons in aperiodic chains. |
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