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Wood anomaly transmission enhancement in fishnet-based metamaterials at terahertz frequencies
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10.1063/1.4769744
/content/aip/journal/jap/112/12/10.1063/1.4769744
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/12/10.1063/1.4769744
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Unit cell of the metamaterial sensing structure: dX  = dY  = 170 μm, EAR = 2, metal thickness = 0.4 μm, BCB interlayer = 13 μm. Inset: Schematic of the polarization configuration.

Image of FIG. 2.
FIG. 2.

Reflection and transmission spectra of a symmetrical fishnet array designed for an operating frequency of 1 THz: dX  = dY  = 170 μm, aY  = 76 μm, EAR = 2, and dZ  = 13 μm.

Image of FIG. 3.
FIG. 3.

Dispersion diagram of a symmetrical fishnet array designed for an operating frequency of 1 THz: dX  = dY  = 170 μm, aY  = 76 μm, EAR = 2, and dZ  = 13 μm.

Image of FIG. 4.
FIG. 4.

Reflection and transmission spectra of a symmetrical fishnet array designed for an operating frequency of 1 THz: dX  = dY  = 170 μm, aY  = 58 μm, EAR = 2, and dZ  = 13 μm.

Image of FIG. 5.
FIG. 5.

Dispersion diagram of a symmetrical fishnet array designed for an operating frequency of 1 THz: dX  = dY  = 170 μm, aY  = 58 μm, EAR = 2, and dZ  = 13 μm.

Image of FIG. 6.
FIG. 6.

Parametric analysis showing the occurrence of two resonant features when elliptical apertures are progressively closed.

Image of FIG. 7.
FIG. 7.

Transmission curves reported on a shifted scale versus frequency when the elliptical apertures are progressively closed.

Image of FIG. 8.
FIG. 8.

Unit cell of the HE metamaterial structure: dX  = 170 μm, dY  = 340 μm, aY  = 29 μm, aX /aY  = 4, metal thickness = 0.4 μm, BCB interlayer = 13 μm. Inset: Schematic of the polarization configuration.

Image of FIG. 9.
FIG. 9.

Transmission and reflection spectra corresponding to the FE and HE arrays.

Image of FIG. 10.
FIG. 10.

Magnitude of the transmission and absorbance as a function of frequency for the half-ellipse array.

Image of FIG. 11.
FIG. 11.

Wavelength of the dip as a function of the periodicity dY : numerical simulations (symbols) and analytical calculation (red line).

Image of FIG. 12.
FIG. 12.

Poynting vector flow in the YZ cut plane at 0.881 THz.

Image of FIG. 13.
FIG. 13.

Poynting vector flow in the YZ cut plane at 0.885 THz.

Image of FIG. 14.
FIG. 14.

Magnitudes of the electric (top view) and magnetic fields probed in the BCB mid plane for f = 0.881 THz.

Image of FIG. 15.
FIG. 15.

Magnitudes of the electric (top view) and magnetic fields probed in the BCB mid plane for f = 0.885 THz.

Image of FIG. 16.
FIG. 16.

Surface current plots on the top face (a) and bottom face (b) of the BCB interlayer at 0.881 THz.

Image of FIG. 17.
FIG. 17.

Surface current plots on the top face (a) and bottom face (b) of the BCB interlayer at 0.885 THz.

Image of FIG. 18.
FIG. 18.

Magnitude of the magnetic field in the YZ cut plane at 0.881 THz.

Image of FIG. 19.
FIG. 19.

Magnitude of the magnetic field in the YZ cut plane at 0.885 THz.

Image of FIG. 20.
FIG. 20.

Transmission coefficient versus frequency for different index values of the surrounding media.

Image of FIG. 21.
FIG. 21.

Sensitivity and figure of merit evolutions versus the differential refractive index.

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/content/aip/journal/jap/112/12/10.1063/1.4769744
2012-12-19
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Wood anomaly transmission enhancement in fishnet-based metamaterials at terahertz frequencies
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/12/10.1063/1.4769744
10.1063/1.4769744
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