Preparation method and application for ferroelectric liquid crystal material grating at room temperature based on femtosecond laser direct writing

A preparation method for a ferroelectric liquid crystal material grating at room temperature based on femtosecond laser direct writing, comprising following specific steps:

• cleaning a first substrate and a second substrate by ultrasound, and cleaning the first substrate and the second substrate by ozone after drying to obtain a cleaned first substrate and a cleaned second substrate;
• applying spacers to edges of the cleaned first substrate and the cleaned second substrate, bonding the cleaned first substrate and the cleaned second substrate in a staggered manner, and forming a liquid crystal cell after curing;
• injecting a ferroelectric liquid crystal material into the liquid crystal cell to form a liquid crystal layer;
• and
• directly writing patterns on the liquid crystal layer by a femtosecond laser direct writing device to control a molecular orientation direction of the liquid crystal layer, and obtaining the ferroelectric liquid crystal material grating;
• wherein, the patterns directly written on the liquid crystal layer by the femtosecond laser direct writing device comprise any one of strip patterns, radial line patterns or circular ring patterns.