通量
材料科学
激光器
纳米-
辐照
超短脉冲
锥面
金属
波长
光电子学
光学
薄膜
纳米技术
复合材料
冶金
物理
核物理学
作者
Barada K. Nayak,Mool C. Gupta
标识
DOI:10.1016/j.optlaseng.2010.04.010
摘要
Ultrafast laser pulse interaction with matter, leading to formation of self-organized conical micro/nano structures in various metals like Ti, Al, Cu, and stainless steel have been observed. Influence of laser parameters such as fluence, number of shots, and gaseous environments on micro/nano structure formation have been investigated. The critical fluence required for well-developed structure formation is dependent on the optical and thermo-physical properties of the materials. By changing the number of laser shots to generate micro/nano structures, surface reflectance of Ti surface could be tailored from their original value (over 50%) to near zero over the wavelength range of 500–1000 nm. Also, we have demonstrated that arrays of micro/nano holes could be formed in thin Ti foils by direct laser treatment.
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