Herein, an effective method is proposed for the fabrication of sequential colors on copper by adjusting femtosecond laser defocusing distance. The sequential evolution tendency of induced colors by adjusting laser defocusing distance is conducted. It is revealed that such a change of surface optical response is originated from the gradual evolution of three different kinds of structures. The angle‐resolved spectrum of the colored surface is investigated. In addition, the simultaneously derived hydrophobicity of the colored surface is explored.

中文翻译：

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飞秒激光散焦铜表面的有序演化

在此，提出了一种通过调整飞秒激光散焦距离来在铜上制造连续颜色的有效方法。通过调整激光散焦距离，得出了诱导色的顺序演化趋势。揭示了这种表面光学响应的​​变化源自三种不同类型结构的逐渐演变。研究了着色表面的角度分辨光谱。另外，还探索了有色表面的同时衍生的疏水性。