We propose an innovative approach to the design of retardation-based plasmonic structures allowing efficient suppression of radiation damping and increase in resonance quality Q factors. The underlying idea consists of conformal structure transformation suppressing its electric-dipole response in favor of magnetic- dipole one. We show that bending of plasmonic nanoantennas increases significantly their Q factors up to the electrostatic limit while preserving the nature of resonance along with its exceptional features such as linear size-dependent tunability and robust field enhancement.
Efficient suppression of radiation damping in resonant retardation-based plasmonic structures
DELLA VALLE, GIUSEPPE;
2009-01-01
Abstract
We propose an innovative approach to the design of retardation-based plasmonic structures allowing efficient suppression of radiation damping and increase in resonance quality Q factors. The underlying idea consists of conformal structure transformation suppressing its electric-dipole response in favor of magnetic- dipole one. We show that bending of plasmonic nanoantennas increases significantly their Q factors up to the electrostatic limit while preserving the nature of resonance along with its exceptional features such as linear size-dependent tunability and robust field enhancement.File in questo prodotto:
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