激光氧化诱导钛表面非虹彩但与角度相关的结构色

IF 6.6 2区 物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
XiaoSong Yu, MingYang Wang, QiLin Jiang, ChenHui Lu, TianLi Feng, Jiao Geng, LiPing Shi
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引用次数: 0

摘要

光学可变特性广泛应用于产品设计和防伪。然而,目前的工业方法严重依赖于化学油墨,这带来了环境问题,并且耐磨性和耐腐蚀性较差。我们通过实验证明了使用纳秒激光诱导氧化在钛表面上产生非虹彩但与角度相关的结构色。与依赖多层干涉、光栅衍射或表面等离子体的传统光学变色方法不同,该技术利用周期性排列的阶梯结构在小角度变化下实现突然的颜色变化。色移源于不同高度结构之间的形态差异,这些结构以不同的角度反射光线,通过干涉作用产生不同的颜色。通过对加工温度的数值模拟,阐明了其形成机理,揭示了样品表面受控的激光烧蚀、氧化和热辐射形成了独特的结构。通过调整点距离和停留时间,可以调节这些过程的影响区域和强度。这一进展不仅为防伪应用提供了新的思路,而且拓宽了激光着色技术的能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Non-iridescent yet angle-dependent structural colors on titanium surfaces induced by laser oxidation
Optically variable features are widely used in product design and anti-counterfeiting. However, current industrial methods rely heavily on chemical inks, which pose environmental concerns and suffer from poor wear and corrosion resistance. We experimentally demonstrate the generation of non-iridescent yet angle-dependent structural colors on titanium surfaces using a nanosecond laser-induced oxidation. Unlike conventional optical color-change methods that rely on multilayer interference, grating diffraction, or surface plasmons, this technique leverages a periodically arranged stepped structure to achieve abrupt color changes under small angle variations. The color shift originates from morphological differences among structures at different heights, which reflect light at distinct angles and produce varying colors through interference effects. The formation mechanism is elucidated through numerical simulations of the processing temperature, revealing that controlled laser ablation, oxidation, and thermal radiation on the sample surface create the unique structure. By tuning the point distance and dwell time, the affected area and intensity of these processes can be regulated. This advancement not only provides new ideas for anti-counterfeiting applications but also broadens the capabilities of laser coloring technology.
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来源期刊
Nanophotonics
Nanophotonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
13.50
自引率
6.70%
发文量
358
审稿时长
7 weeks
期刊介绍: Nanophotonics, published in collaboration with Sciencewise, is a prestigious journal that showcases recent international research results, notable advancements in the field, and innovative applications. It is regarded as one of the leading publications in the realm of nanophotonics and encompasses a range of article types including research articles, selectively invited reviews, letters, and perspectives. The journal specifically delves into the study of photon interaction with nano-structures, such as carbon nano-tubes, nano metal particles, nano crystals, semiconductor nano dots, photonic crystals, tissue, and DNA. It offers comprehensive coverage of the most up-to-date discoveries, making it an essential resource for physicists, engineers, and material scientists.
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