Fig. 1. (a) Structure diagram of the MIR chiral plasmonic metasurface. In the coordinate system, the polarization direction of 0 deg polarized light is along the x axis, and the polarization direction of 90 deg polarized light is along the y axis. (b) Side view of the unit cell of the chiral plasmonic metasurface. (c) Top view of the unit cell of the chiral plasmonic metasurface.

Fig. 2. Simulated spectral emissivity/absorptivity of (a) 0 deg, (b) 45 deg, (c) 90 deg, (d) 135 deg, (e) LC, and (f) RC polarized lights of the chiral plasmonic metasurface.

Fig. 3. Normalized electric-field distribution of the chiral metasurface with crystalline IST when (a) LC, (b) RC, (c) 0 deg, (d) 45 deg, (e) 90 deg, and (f) 135 deg polarized lights are incident.

Fig. 4. Normalized power loss distribution of the chiral metasurface with crystalline IST when (a) LC, (b) RC, (c) 0 deg, (d) 45 deg, (e) 90 deg, and (f) 135 deg polarized lights are incident.

Fig. 5. Simulated spectral Stokes parameters of CPME when IST is in the (a) amorphous state and (b) crystalline state.

Fig. 6. Simulated DoP, DoLP, and DoCP of CPME when IST is in the (a) amorphous state and (b) crystalline state.

Fig. 7. (a) The radiation intensities and (b) the Stokes parameters of the CPME at T=100°C and θ=0deg when IST is in the crystalline and amorphous states. DoP, DoLP, and DoCP of the chiral plasmonic metasurface at different emission angles when the IST is in the (c) amorphous state and (d) crystalline state.

Fig. 8. (a) Schematic of infrared polarization imaging for targets. Infrared polarization, infrared linear polarization, and infrared circular polarization images at the normal direction of the target in (b) crystalline state and (c) amorphous state.