Sol-gel coating of transparent optically variable

Xingyuan Ni; Zhihua Zhang; Fan Yang; Jiandong Wei; Jun Shen

doi:10.1117/12.668133

1 February 2006 Sol-gel coating of transparent optically variable

Xingyuan Ni, Zhihua Zhang, Fan Yang, Jiandong Wei, Jun Shen

Proceedings Volume 6034, ICO20: Optical Design and Fabrication; 603414 (2006) https://doi.org/10.1117/12.668133
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

A sol-gel coating of transparent optically variable is introduced in this paper. The plastic films coated with titanium dioxide using sol-gel process were embossed to form special patterns in micrometer scales. AFM, SEM, ellipsometer and electrophotometer were used to characterize the TiO₂ coating and the transparent optically variable. The results show that the titania coating has nano-porous structure and the refractive index is about 1.9. The diffraction efficiency of the transparent optically variable coating is about 2.0%.

Citation Download Citation

Xingyuan Ni, Zhihua Zhang, Fan Yang, Jiandong Wei, and Jun Shen "Sol-gel coating of transparent optically variable", Proc. SPIE 6034, ICO20: Optical Design and Fabrication, 603414 (1 February 2006); https://doi.org/10.1117/12.668133

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