Figure 2
From: Facile strain analysis of largely bending films by a surface-labelled grating method
Photoinduced bending of azobenzene-containing liquid-crystalline elastomer films.
(a), Upon irradiation with UV light, a homogeneously aligned azobenzene-containing liquid-crystalline elastomer film bends towards the light source along the molecular alignment direction. The initial flat state can be restored by irradiating the film with visible light. (b), The surface-labelled grating allows for positional mapping of the surface strains at both the inner and outer surfaces of the bending film.
