Fig. 1. Schematic of magnetic field-assisted alignment.（a）Device schematic of magnetic field-assisted alignment^［14］；（b）Schematic of combined magnetic field-assisted alignment^［15］.

Fig. 2. Schematic of electric field-assisted alignment.（a）Basic operation process of electric field-assisted alignment^［16］；（b）Schematic of the deformation of the liquid crystal polymer after patterned orientation^［20］.

Fig. 3. Voxelated liquid crystal elastomers^［27］.（a）Polarized photos of the liquid crystal polymer film；（b）Morphological photos of the liquid crystal polymer film at different temperatures.

Fig. 4. Schematic of alignment templates prepared by photolithography^［36］.（a）Basic operation process of prepared process；（b）Optical microscope image of channels patterned；（c）Schematic of the 2D to 3D transformation in LCPs membrane.

Fig. 5. Schematic of mechanical alignment.（a）Two-step preparation of polysiloxane-based liquid crystal polymers^［37］；（b）Schematic of multiaxial stretching alignment^［41］；（c）Schematic of photo-induced cross-linking to fix the alignment state^［40］；（d）Schematic of stamping alignment^［4］.

Fig. 6. Schematic of rheological alignment.（a）Schematic of 3D-print to fabricate LCPs^［44］；（b）Schematic of DLP technology to fabricate LCPs^［45］.

Fig. 7. Schematic of bionic soft robots.（a）Schematic of motion of bio-soft-robot under continuous laser scanning^［48］；（b）Schematic of “Ω”-shaped bio-soft-robot moves under visible light irradiation^［49］；（c）Schematic of bouncing robot bounces under light stimuli^［50］.

Fig. 8. Schematic of microfluidic.（a）Schematic of LCPs microvalve driven by thermal stimulation^［55］；（b）Schematic of droplet motion in the LCPs microtubule actuator under gradient light irradiation^［56］；（c）Schematic of LCPs-based microfluidic chips manipulate liquids under light stimulation^［57］.

Fig. 9. Schematic of soft actuators.（a）Schematic of LCPs soft actuators program and controllable assemble on the water surface^［59］；（b）Schematic of deformation of artificial muscles based on LCPs under near-infrared light stimulation^［60］；（c）Schematic of manipulator based on LCPs in MEMS gripping objects after electrification^［61］.

Fig. 10. Schematic of actuators based on composite material.（a）Schematic of preparation of the composite film of Kapton nanofiber-reinforced LCPs^［64］；（b）Schematic of preparation of liquid metal-LCPs actuator^［65］.

Fig. 11. Schematic of structural color.（a）Schematic of chemical structure and multiple nanopatterning fabrication^［69］；（b）Schematic of variation of structural color under different air pressures^［70］.