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<p>A TiO₂ auxiliary coating was applied to enhance the coupling of a 1064&#xa0;nm infrared nanosecond laser with glass surfaces. A compact automated coating system was used to deposit TiO₂ suspensions, and the effects of coating thickness, TiO₂ solid content, and particle size on microgroove formation were investigated. One-way and two-way ANOVA were used to evaluate the dimensional results. Coating thickness and TiO₂ solid content significantly affected microgroove width, with a significant interaction between the two factors (all <i>p</i> &lt; 0.001). The solid-content effect was mainly evident at smaller coating thicknesses. Particle size primarily affected groove morphology, with 100&#xa0;nm TiO₂ producing the most regular structures. White-light interferometry and SEM were used to compare representative candidate conditions. Within the investigated parameter space, the best-performing condition consisted of a TiO₂ particle size of 100&#xa0;nm, a coating thickness of 35&#xa0;μm, and a TiO₂ solid content of 35 wt%.</p>

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Research on auxiliary coating techniques for nanosecond laser processing of glass surfaces

  • 期刊论文

  • 发表日期：

    2026年8月4日

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  • Yan Xu,
  • Renbin She,
  • Liang Yang

摘要

A TiO₂ auxiliary coating was applied to enhance the coupling of a 1064 nm infrared nanosecond laser with glass surfaces. A compact automated coating system was used to deposit TiO₂ suspensions, and the effects of coating thickness, TiO₂ solid content, and particle size on microgroove formation were investigated. One-way and two-way ANOVA were used to evaluate the dimensional results. Coating thickness and TiO₂ solid content significantly affected microgroove width, with a significant interaction between the two factors (all p < 0.001). The solid-content effect was mainly evident at smaller coating thicknesses. Particle size primarily affected groove morphology, with 100 nm TiO₂ producing the most regular structures. White-light interferometry and SEM were used to compare representative candidate conditions. Within the investigated parameter space, the best-performing condition consisted of a TiO₂ particle size of 100 nm, a coating thickness of 35 μm, and a TiO₂ solid content of 35 wt%.