Abstract Periodic lines with intervals ranging from ∼220 μm down to ∼27 μm were fabricated on the surface of Zr55Cu30Al10Ni5 metallic glass ribbon and disk samples by laser irradiation. The X-ray diffraction results indicated that both oxides (monoclinic ZrO2, tetragonal ZrO2) and crystallites (Cu10Zr7, NiZr2) existed together with the amorphous phase on the surface of the laser-patterned metallic glass samples. The energy-dispersive X-ray spectroscopy of a cross section of a disk sample clearly showed that high amounts of aluminum (292% of the nominal composition) and oxygen were present in the laser-irradiated area, suggesting that Al2O3 formed on the surface of the laser-irradiated region. Reflective diffraction spots were observed from the fine grids with a grating period of ∼27 μm, indicating the excellent periodicity and accuracy of the pattern in two dimensions on the surface of the metallic glass substrates. Calculation of the grating period using Bragg's law confirmed that the spots originated from the periodic patterns of the laser-irradiated lines. Along the lines, pairs of ridges and hollows with a height/depth of ∼0.5 μm were observed; such specific morphology generated the diffraction spots as a reflective grating. We observed structural color gradation from the periodic fine grids under a fluorescent light. The present study showed that it is possible to prepare optical gratings on the surface of metallic glasses by laser irradiation more cheaply and easily than by conventional imprinting.

中文翻译：

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激光照射锆基金属玻璃表面图案化制备光栅

摘要 通过激光辐照在 Zr55Cu30Al10Ni5 金属玻璃带和圆盘样品表面制备了间隔范围为~220 μm 到~27 μm 的周期线。X 射线衍射结果表明氧化物（单斜晶 ZrO2、四方 ZrO2）和微晶（Cu10Zr7、NiZr2）与非晶相一起存在于激光图案化金属玻璃样品的表面。圆盘样品横截面的能量色散 X 射线光谱清楚地表明，激光照射区域中存在大量铝（标称成分的 292%）和氧，这表明在表面形成了 Al2O3。激光照射区域。从光栅周期约为 27 μm 的精细网格中观察到反射衍射点，表明金属玻璃基板表面二维图案的良好周期性和准确性。使用布拉格定律计算光栅周期证实，这些斑点源自激光照射线的周期性图案。沿着这条线，观察到高度/深度约为 0.5 μm 的成对的脊和凹陷；这种特殊的形态产生了作为反射光栅的衍射斑点。我们在荧光灯下观察到周期性精细网格的结构颜色渐变。目前的研究表明，与传统的压印相比，通过激光照射可以更便宜、更容易地在金属玻璃表面制备光栅。s定律证实，这些斑点源自激光照射线的周期性图案。沿着这条线，观察到高度/深度约为 0.5 μm 的成对的脊和凹陷；这种特殊的形态产生了作为反射光栅的衍射斑点。我们在荧光灯下观察到周期性精细网格的结构颜色渐变。目前的研究表明，与传统的压印相比，通过激光照射可以更便宜、更容易地在金属玻璃表面制备光栅。s定律证实，这些斑点源自激光照射线的周期性图案。沿着这条线，观察到高度/深度约为 0.5 μm 的成对的脊和凹陷；这种特殊的形态产生了作为反射光栅的衍射斑点。我们在荧光灯下观察到周期性精细网格的结构颜色渐变。目前的研究表明，与传统的压印相比，通过激光照射可以更便宜、更容易地在金属玻璃表面制备光栅。我们在荧光灯下观察到周期性精细网格的结构颜色渐变。目前的研究表明，与传统的压印相比，通过激光照射可以更便宜、更容易地在金属玻璃表面制备光栅。我们在荧光灯下观察到周期性精细网格的结构颜色渐变。目前的研究表明，与传统的压印相比，通过激光照射可以更便宜、更容易地在金属玻璃表面制备光栅。