Fig. 3From: The development progress of multi-array colourimetric sensors based on the M13 bacteriophage(a–e Reproduced with permission from Ref. [60]. Copyright 2011, Nature Publishing Group)The nanostructure of smectic helicoidal nanofilament. a Diagram of smectic helical nanofilament (SHN) structure. Atomic force microscopy (AFM) images of b SHN structures composed of c smectic C bundles. d Proposed model of SHN structure composed of left- and right-handed helix nanofilaments. e Grazing incidence small-angle X-ray scattering measurements perpendicular to the pulling direction show phage structures filled with quasi-hexagonal within the SHNBack to article page