Fig. 11. (a) SEM images of the CNC film with the gap filled with an anisotropic liquid crystal of 4CB, and the scheme showing the gap filled with the anisotropic layer sandwiched between the two left cholesteric domains. Scale bars: 3 μm. (b) Photographs of the CNC and 5CB composite film observed through unpolarized white light and circularly polarized light showing different colour reflection in LCP and RCP light channels (top), and the optical characteristics of the film with a liquid-crystal layer acting as a λ/2 plate (bottom).158 Copyright 2017, Wiley. (c) Scheme of CNC–CNF stacked biocomposite films fabricated from alternating layered chiral nematic CNC and random CNF phases. (d) Cross-sectional SEM image showing multi-layer stacking structure. (e) Strength and toughness of the CNC–CNF stacking structure.76 Copyright 2020, American Chemical Society.
