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The fabricated 3D dielectric composite with isotropic negative permeability. (a) Photograph of the simple cubic lattice of dielectric ceramic cubes arrayed in the Teflon substrate. (b) XRD spectra of the ceramic cube.
Dependence of dielectric constant measured at on the temperature.
Measured transmission of the 3D dielectric composite at . The inset shows the simulated dynamic electric field (a) at and magnetic field (b) at in the cube.
Demonstration of the actively modulated isotropic negative permeability dielectric composite. (a) Dependence of the first magnetic resonance on the temperature. (b) Dependence of transmission phases on the temperature.
Calculated effective permeabilities of the dielectric composite under different temperatures. The inset shows the dependence of the first magnetic resonance frequency on the temperature.
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