Mammalian Cornea Inspired Anti-Fogging Silica Glass Surface Achieved by Femtosecond Laser

摘要

Fog generation can severely damage optical systems by degrading the lightabsorption rate and imaging quality of optical components. Furthermore, fogcan reduce the light flux and transmittance of the optical system, resultingin poor imaging clarity and contrast. Studies have focused on minimizingfog formation and effects. Drawbacks such as high energy consumption andwaste pollution severely limit the application of conventional methods. However,achieving high fog resistance of optical components remains a challenge.A novel method of fabricating anti-fogging slippery surfaces (inspiredby the anti-fog mechanism of the mammalian cornea) on silica glass by usingfemtosecond lasers is proposed to achieve durable and environment-friendlyoptical devices that can achieve anti-fogging in real time. The femtosecondlaser wet etching method is used to fabricate the inside cabin of glass. Thecabin filled with graphene spontaneously heats the sample under sunlight toprevent fog formation. In addition to exhibiting excellent anti-fogging characteristics,the prepared sample achieves high optical transmittance, high durability,and excellent self-repair capability. Thus, the proposed method exhibitsconsiderable potential for application in numerous domains.