▎ 摘　　要

NOVELTY - Preparing polymerizable nano monomer with photothermal conversion effect comprises (i) preparing functional nanomaterials with high photothermal conversion efficiency, and coating surface with silicon layer, (ii) using a siloxane coupling agent with -aminated at the end to modify the silicon layer to obtain an aminated photothermal nanomaterial, and (iii) carrying out an amidation reaction between the polymerizable benzoic acid monomer with a carboxyl group at the end and the aminated photothermal nanomaterial, and post-treating. USE - The light-driven self-sustaining vibrator is useful in a soft robot and a light-driven soft flapping aircraft (claimed). ADVANTAGE - The liquid crystal nanocomposite films undergo overall macroscopic bending, due to the self-shadowing effect, The part coated with the thin film reflective coating blocks the incident light, so that the temperature of the blocked part decreases, The film returns from the bent state to the initial flat state. The liquid crystal nanocomposite film can generate continuous and stable vibration under illumination, removing the incident light, The film stops vibrating and gradually cools down to return to its original state. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: A polymerizable nanomonomer prepared based on the preparation method, preferably, light absorption range of the polymerizable nanomonomer is 300-1200 nm. Preparing liquid crystal nanocomposite film comprising (i) obtaining a liquid crystal cell in which the upper and lower substrates are vertically oriented and parallel oriented by using an alignment agent treatment method, mixing photoinitiator and the polymerizable nano-monomer in a predetermined ratio, obtaining a uniform wide temperature range liquid crystal nano-mixture, (ii) pouring the wide temperature range liquid crystal nano-mixture into the liquid crystal cell by increasing the temperature and capillary force through slow cooling and thermal annealing, the liquid crystal molecules exhibit a splay orientation, using ultraviolet light for photocrosslinking, opening the liquid crystal cell, and obtaining liquid crystal nanocomposite film with splay orientation A liquid crystal nanocomposite film prepared by the preparation method Preparing light-driven self-sustained vibrator, comprises cutting liquid crystal nanocomposite film, coating or sticking a light reflective layer or sticking a reflective plastic film on the lower surface in on one side of the liquid crystal nanocomposite film, other end of the fixed liquid crystal nanocomposite film forms a cantilever structure to obtain a light-driven self-sustained vibrator, preferably, the light reflection layer is white paper, tin foil or aluminum tissue paper. A light-driven self-sustained vibrator prepared by the preparation method comprises illuminating liquid crystal nanocomposite film, where light-driven self-sustained vibrator self-sustained vibrates, stops the illumination, and the light drives the self-sustaining vibrator back to its original state.