Fig. 6. Predicted permittivities of SiO2 nanopillars. (a) Perpendicular component (blue solid curve: real part, and green dashed curve: imaginary part) and the parallel component (red solid curve: real part, and cyan dashed curve: imaginary part) of the uniaxial permittivity of the SiO2 nanopillars. (b) Intrinsic permittivity of the SiO2 nanopillars (thick blue curve: real part, and thick green dashed curve: imaginary part). The permittivity of fused quartz in ref. 48 is shown for comparison (thin blue curve: real part, and thin green dashed curve: imaginary part).
