Figure 2
(a) Near-field intensity and (b) transmittance spectra of case 2 with tuning ε (ε = 1.0, 2.25, 5.0 and 9.0, where ε is the permittivity of dielectric media in PNSs). Case 1 is also displayed for comparison. (c) Distributions of the electric field intensity |E T | (in the x-y and x-z plane), and (d) Magnetic field intensity |H T | (in the x-y and x-z plane) of case 2 (with ε = 2.25 at λres = 670 nm).
