Passive Infrared Sensing Using Plasmonic Resonant Dust Particles

Figure 6

Simulation results using the RCW method that present the reflectance at normal incidence within the LWIR band as the duty cycle of the gold grating period is varied from 12.5% to 87.5%. For this simulation, the substrate thickness is fixed at 2.0 μm with a grating period of 3.0 μm. The incident wave was normally incident with parallel polarization.