首页> 外文会议>Conference on laser applications in microelectronic and optoelectronic manufacturing VII; 20090126-29; San Jose, CA(US) >Nanostructure formation processes in femtosecond laser ablation of thin film surfaces
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Nanostructure formation processes in femtosecond laser ablation of thin film surfaces

机译:飞秒激光烧蚀薄膜表面的纳米结构形成过程

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摘要

We have studied periodic nanostructure formation processes on hard thin film surfaces in femtosecond laser ablation. Using diamond-like carbon films patterned with submicrometer-size stripes, we found that the nanoscale ablation is preferentially initiated by the enhancement of a local field on the stripe surface having high curvature. Based on the experimental results for the initial stage of nanostructuring, it is concluded that the nanoscale ablation is initiated with the enhanced local field, and the periodicity is developed with the excitation of surface plasmon polaritons.
机译:我们已经研究了飞秒激光烧蚀在硬质薄膜表面上的周期性纳米结构形成过程。使用以亚微米尺寸的条纹图案化的类金刚石碳膜,我们发现纳米级消融优先通过增强具有高曲率的条纹表面上的局部电场来引发。根据纳米结构初始阶段的实验结果,可以得出结论,纳米尺度的烧蚀是由增强的局部电场引发的,周期性的是由表面等离激元极化子的激发而产生的。

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