Chinese Optics Letters, 2010, 8 (1): 38, Published Online: Mar. 1, 2010
Femtosecond laser microstructuring of nickel foil Download: 674次
激光烧蚀 飞秒激光 金属 表面形貌 140.7090 Ultrafast lasers 140.3390 Laser materials processing 320.7130 Ultrafast processes in condensed matter, including semiconductors 160.3900 Metals
Abstract
We observe the morphological change and grain structure of Ni foil when it is ablated with femtosecond laser pulses. Scanning electron microscopy and ˉeld emission transmission electron microscopy are used to study the nature of the morphology and grain structure of nickel foil and determine the essential features. The results indicate that there are many random nanostructures in the center of the ablated region composed of nanocrystalline grains as well as some core-shell structures. The observed morphologies seem to suggest that phase explosion and extremely high cooling rate are the most probable physical mechanisms responsible for the formation of surface nanostructures.
Wei Jia, Bin Zhou, Xun Li, Lu Chai, Ruobing Zhang, Chingyue Wang. Femtosecond laser microstructuring of nickel foil[J]. Chinese Optics Letters, 2010, 8(1): 38.