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. 2018 Mar 5;115(12):2878–2883. doi: 10.1073/pnas.1718264115

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Fig. 5. — Emission from 3D bodies. (Top) Sketch of the geometry, being identical to that in Fig. 2, except the 2D body has been extruded by a height L_z. (Bottom) Comparison of the numerical prediction of the normalized emission pattern at the ENZ wavelength, λ_ENZ = 10.3 μm, in the azimuthal plane (θ = π/2, H_z polarization), for the 2D case and 3D cases with heights L_z = 10, 20, and 80 μm. The numerical simulations confirm that the thermal emission in the azimuthal plane converges to the 2D case as the aspect ratio of the 3D case increases.