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The plasmonic J-pole antenna
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View: Figures


Image of FIG. 1.
FIG. 1.

Comparison of the quadrupole mode for a (a) dipole antenna, (b) SRR, and (c) J-pole antenna, where the relative dipole charge is presented, (d) illustrates the nomenclature and notation used for describing the J-pole antenna.

Image of FIG. 2.
FIG. 2.

(a) Simulated optical scattering spectra of a J-pole antenna, illuminated at 110° with respect to the x-axis, showing the dipole and quadrupole resonances, along with a calculation of the surface charge at each of the resonances. The inset shows a SEM image of a Ag J-pole antenna fabricated on a glass substrate. Far-field spectra in the x-y plane of the (b) quadrupole and (c) dipole resonances, note the different intensity scales.

Image of FIG. 3.
FIG. 3.

Scattered intensity from (a) simulated and (b) measured J-pole antenna at angles ranging from 20° to 110° to the x-plane in the x-y plane of the antenna.

Image of FIG. 4.
FIG. 4.

Measured maximum scatter due to the quadrupole resonance for two different sized J-pole antenna with respect to polarization incident angle θ. The red and blue points are for antennas with a cross-arm length (Lc) of 30 nm and 50 nm, respectively. Lines are included to guide the eye. The inset illustrates the scattering spectra of the antennas with Lc of 30 nm and 50 nm (red and blue, respectively).


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Scitation: The plasmonic J-pole antenna