Fig. 1. RCBM unit (a) top view, (b) periodic unfolding, and (c) enlarged view of the structure.

Fig. 2. (a) Transmittance for different rotation angles θ (without PMMA). (b) Transmittance for different RIs (nv) of active layer (θ=0°, with PMMA, nPMMA=1.5). (c) Transmittance spectrum and (d) CD spectrum (simulated in FDTD and CST) of the RCBM (θ=10°) in air (nv=1, Δn=−0.5).

Fig. 3. Multipole decomposition of the RCBM (θ=10°, nv=1, Δn=−0.5) under (a) LCP and (d) RCP wave incidence. x-y plane electric field distribution of the RCBM (θ=10°, nv=1, Δn=−0.5): (b) LCP and (c) RCP wave incidence. x-y plane magnetic field distribution of the RCBM (θ=10°, nv=1, Δn=−0.5): (e) LCP and (f) RCP wave incidence at λ=785.1nm.

Fig. 4. In RCBM (covered PMMA), the effects of (a) different rotation angles θ and (b) different RIs (nv) of the active layer on CD, and (c) the dependence of CD and resonance wavelength on Δn.

Fig. 5. (a) Unit structure of SBCBM. (b) CD spectrum of PANI transitioning from oxidized state to reduced state.

Fig. 6. (a) Top view and (b) unit structure of the DBCBM. (c) Effect of different widths w1 of the PMMA spacer on CD at n1=1.3 (oxidized state), n2=1.7 (reduced state).

Fig. 7. (a)–(e) CD spectra at different n2 for n1 of 1.3, 1.4, 1.5, 1.6, and 1.7 in DBCBM, where |CDMAX| denotes the maximum absolute value of CD. (f) CD spectra for different n2 at n1=1.7 (solid line) and for different n1 at n2=1.7 (dashed line) in DBCBM.