Fig. 10: Structural color micro-actuators based on CLCs.

a Molecular structures of the monomers used to prepare the photonic 3D micro-actuators using direct laser writing. b Optical microscopy (top) and scanning electron microscopy (SEM) images (bottom) of a flower-shaped microstructure before base treatment. c Crossed polarized micrographs of the flower showing color changes with direct (humidity) and indirect (temperature) triggers. Reproduced with permission⁷³. Copyright 2020, American Chemical Society. d Molecular structures of the monomers used to prepare the micrometer-sized CLC particles. e Temperature (top) and light (bottom) responses of CLC particles exhibiting spot-like structural colored domains. Reproduced with permission⁷⁴. Copyright 2020, Wiley-VCH