Table 1.
Average spectral position of reflectance maxima (λav) along with average peak width (absolute FWHM - Δλav and relative - Δλav/λav) of the left-circularly polarized Bragg peak, for the blue, green and red CNC films, before and after the prepolymer infiltration, prior to curing.
| Initial film color | Blue | Green | Red | ||||||
|---|---|---|---|---|---|---|---|---|---|
| λav (nm) | Δλav (nm) | Δλav/λav | λav (nm) | Δλav (nm) | Δλav/λav | λav (nm) | Δλav (nm) | Δλav/λav | |
| initial | 470 ± 20 | 61 | 13% | 570 ± 20 | 39 | 7% | 630 ± 70 | 80 | 13% |
| impregnated | 560 ± 70 | 102 | 18% | 660 ± 80 | 73 | 11% | 700 ± 100 | 106 | 15% |