Structural Color Dynamic Graphics Display Based on Microlens Array  

基于微透镜阵列的结构色动态图形显示

作　　者：LI Xue-han LIU Ling-zhi HUANG Min LI Xiu 李雪涵;刘凌志;黄敏;李修(北京印刷学院印刷与包装工程学院,北京102600)

机构地区：[1]School of Printing and Packaging Engineering,Beijing Institute of Graphic Communication,Beijing 102600,China

出　　处：《印刷与数字媒体技术研究》2025年第2期162-168,共7页Printing and Digital Media Technology Study

基　　金：北京印刷学院科研创新团队项目(No.BIGC Ec202003、No.BIGC Eb202102)。

摘　　要：It is of great scientific significance to construct a 3D dynamic structural color with a special color effect based on the microlens array.However,the problems of imperfect mechanisms and poor color quality need to be solved.A method of 3D structural color turning on periodic metasurfaces fabricated by the microlens array and self-assembly technology was proposed in this study.In the experiment,Polydimethylsiloxane(PDMS)flexible film was used as a substrate,and SiO2 microspheres were scraped into grooves of the PDMS film to form 3D photonic crystal structures.By adjusting the number of blade-coated times and microsphere concentrations,high-saturation structural color micropatterns were obtained.These films were then matched with microlens arrays to produce dynamic graphics with iridescent effects.The results showed that by blade-coated two times and SiO2 microsphere concentrations of 50%are the best conditions.This method demonstrates the potential for being widely applied in the anticounterfeiting printing and ultra-high-resolution display.基于微透镜阵列构建特殊颜色效果的三维动态结构色研究具有重要的科学意义。然而,这一领域仍然面临着机制不完善和颜色质量不佳的问题。本研究提出了一种利用微透镜阵列和自组装技术在周期性超表面上进行三维结构色调控的方法。在实验中,使用聚二甲基硅氧烷(PDMS)柔性材料为衬底,将二氧化硅(SiO2)微球刮涂至PDMS凹槽内自组装形成三维光子晶体结构。通过调整刮涂次数和微球浓度,得到了高饱和度的结构色微图案阵列。随后,将薄膜与微透镜阵列匹配,以产生具有虹彩效果的PDMS复合型薄膜。结果表明,刮涂两次、微球浓度50%时可以达到最佳效果。该方法展示了在防伪印刷和超高分辨率显示领域的广泛应用潜力。

关 键 词：Structural color Microlens array Dynamic graphics display Moirémagnification Optical anti-counterfeiting 

分 类 号：TS853.6[轻工技术与工程]