Electrically Connected Resonant Optical Antennas

Electrically connected resonant optical antennas hold promise for the realization of highly efficient nanoscale electro-plasmonic devices that rely on a combination of electric fields and local near-field intensity enhancement. Here we demonstrate the feasibility of such a concept by attaching leads...

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Bibliographic Details
Published in:Nano letters 2012-08, Vol.12 (8), p.3915-3919
Main Authors: Prangsma, Jord C, Kern, Johannes, Knapp, Alexander G, Grossmann, Swen, Emmerling, Monika, Kamp, Martin, Hecht, Bert
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Devices
Direct current
Electric fields
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Electronics
Exact sciences and technology
Feasibility
Joining
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Molecular electronics, nanoelectronics
Nanostructure
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Simulation
Surface and interface electron states
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
White light
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Summary:Electrically connected resonant optical antennas hold promise for the realization of highly efficient nanoscale electro-plasmonic devices that rely on a combination of electric fields and local near-field intensity enhancement. Here we demonstrate the feasibility of such a concept by attaching leads to the arms of a two-wire antenna at positions of minimal near-field intensity with negligible influence on the antenna resonance. White-light scattering experiments in accordance with simulations show that the optical tunability of connected antennas is fully retained. Analysis of the electric properties demonstrates that in the antenna gaps direct current (DC) electric fields of 108 V/m can consistently be achieved and maintained over extended periods of time without noticeable damage.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl3007374