期刊
APPLIED SURFACE SCIENCE
卷 283, 期 -, 页码 648-653出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2013.07.002
关键词
Femtosecond phenomena; Laser processing; Microstructuring; Nanostructuring
类别
资金
- Multi-University Research Initiative (MURI) [W911NF-06-1-0446]
- Grant Assistance in Areas of National Need (GAANN) [P200A070344]
- Nebraska Center for Energy Sciences Research (NCESR)
- Nebraska Public Power District (NPPD) [4200000844]
The formation of nanoparticle covered pyramidal structures using femtosecond laser pulses with a fluence near the ablation threshold is reported for the first time. These unique structures form through a combination of preferential ablation of flat regions around the pyramids and redeposition of nanoparticles created during the ablation process. The structures are demonstrated on nickel and stainless steel 316. When produced by rastering Gaussian pulses across the sample, layers of nanoparticles join together by sintering to form unique layered shells. (c) 2013 Elsevier B.V. All rights reserved.
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