Figure 2

(a) Optical constants of various metals in the mid-infrared region and the simulated transmittance spectra for (b) Au, (c) W, (d) Ta, (e) Al nanodiscs array with a duty cycle of 50%, and (f) Al nanodiscs array with a duty cycle of 60%.
(a) Optical constants of various metals in the mid-infrared region and the simulated transmittance spectra for (b) Au, (c) W, (d) Ta, (e) Al nanodiscs array with a duty cycle of 50%, and (f) Al nanodiscs array with a duty cycle of 60%.