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Electromechanically Tunable Suspended Optical Nano antenna

By K. Chen, G. Razinskas, T. Feichtner, S. Grossmann, S. Christiansen and B Hecht

Abstract

Coupling mechanical degrees of freedom with plasmonic resonances has potential applications in optomechanics, sensing, and active plasmonics. Here we demonstrate asuspended two wire plasmonic nanoantenna acting like a nanoelectrometer. The antenna wires are supported andelectrically connected via thin leads without disturbing theantenna resonance. As a voltage is applied, equal charges are induced on both antenna wires. The resulting equilibrium between the repulsive Coulomb force and the restoring elastic bending force enables us to precisely control the gap size. As a result the resonance wavelength and the amp; 64257;eld enhancement of the suspended optical nanoantenna can be reversibly tuned. Our experiments highlight the potential to realize large bandwidth optical nanoelectromechanical system

Topics: Solar cells of the next generation
Year: 2016
OAI identifier: oai:helmholtz.HZB:89153
Provided by: HZB Repository
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